Hwang In-Hee
| Faculty of Engineering Environmental Engineering Division of Environmental Engineering | Associate Professor |
Last Updated :2025/12/04
■Researcher basic information
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Research Keyword
Research Field
Educational Organization
- Bachelor's degree program, School of Engineering
- Master's degree program, Graduate School of Engineering
- Doctoral (PhD) degree program, Graduate School of Engineering
■Career
Career
- Apr. 2021 - Present
北海道大学大学院工学研究院環境工学部門環境工学分野, 准教授 - Apr. 2012 - Mar. 2021
Hokkaido University, Faculty of Engineering, Division of Built Environment, 助教 - Oct. 2009 - Mar. 2012
Hokkaido University, Graduate School of Engineering, Division of Solid Waste, Resources and Geoenvironmental Engineering, 特任助教 - Mar. 2008 - Sep. 2009
国立環境研究所, ポスドクフェロー - Oct. 2006 - Feb. 2008
Hokkaido University, COEプログラム博士研究員
Educational Background
■Research activity information
Awards
Papers
- Discovering the impact of triethanolamine (TEA): how TEA dosage transforms blast-furnace slag cement hydration
Qi Zhai, Juhyuk Moon, In-Hee Hwang, Chi-sun Poon, Kiyofumi Kurumisawa
Construction and Building Materials, Sep. 2025, [Peer-reviewed]
Scientific journal - Computational-fluid-dynamics simulation of nitrogen oxide emission in a vertical-type waste incinerator under oxyfuel- and air-combustion conditions
Ahmed Abd Alraheem Suliman Esaa, In-Hee Hwang, Yuki Ogaya, Takeshi Yamauchi, Yasumasa Tojo
Waste Management, Jul. 2025, [Peer-reviewed], [Corresponding author]
Scientific journal - Current Status and Challenges of Flue Gas Treatment in Waste Incineration
Hwang In-Hee, Sameshima Ryo, Kawamoto Katsuya
Material Cycles and Waste Management Research, 36, 1, 48, 57, Japan Society of Material Cycles and Waste Management, 31 Jan. 2025, [Lead author, Corresponding author]
Japanese, The incineration technology supporting the intermediate treatment of solid waste has developed along with air pollution control technologies for exhaust gases. This paper introduces the technological evolution and trends in the treatment and emission control of nitrogen oxides, acidic gases (hydrogen chloride and sulfuric oxide), mercury, and organic compounds, based on presentations made at the Annual Conference of JSMCWM since the early 2000s when the prototype of exhaust gas treatment systems was nearly completed. Regarding nitrogen oxides, the prospects of combustion technologies and selective non-catalytic reduction, as well as expectations for integration with dioxin countermeasures were discussed. In the dry scrubbing of acidic gases, challenges related to unreacted alkali agents were addressed, along with several countermeasures. Related to the removal of mercury and mercury compounds, control technologies utilizing activated carbon were highlighted. Besides, the characteristics and challenges of thermal treatment of PFAS were discussed. - Suppression mechanism contributing to the low leaching rate of cesium from incineration bottom ash
Yasumasa Tojo, Mikako Ishii, Kazuki Tamura, In-Hee Hwang
Journal of Environmental Radioactivity, 280, 107575, 107575, Elsevier BV, Dec. 2024, [Peer-reviewed]
Scientific journal - New insights in the adsorption behavior of triethanolamine on OPC by experimental and theoretical study
Qi Zhai, Kiyofumi Kurumisawa, Hegoi Manzano, Juhyuk Moon, In-Hee Hwang
Cement and Concrete Research, 184, 107610, 107610, Elsevier BV, Oct. 2024, [Peer-reviewed]
Scientific journal - Advances in understanding the effect of alkanolamine in cement-based materials
Qi Zhai, Kiyofumi Kurumisawa, Juhyuk Moon, In Hee Hwang
Journal of Cleaner Production, 452, 01 May 2024, [Peer-reviewed] - IMPROVEMENT OF INSOLUBILIZATION EFFICIENCY OF CESIUM IN FLY ASH BY ALKALI FELDSPAR USING ROTARY KILN
TOJO Yasumasa, OKUBO Haruo, HWANG In-Hee, MATSUO Takayuki
Japanese Journal of JSCE, 79, 25, n/a, Japan Society of Civil Engineers, 2023, [Peer-reviewed]
Japanese, At present, to reduce the volume of decontamination waste, thermal treatment is carried out. In the thermal treatment, cesium (Cs) is volatilized and separated, resulting in fly ash containing much radioactive Cs. Cs in this fly ash is a chloride and is soluble. For safe final disposal, it is preferable that Cs in fly ash is insoluble. In this study, applying the mechanism that alkali feldspar makes Cs insoluble under heating conditions, whether the efficiency of insolubilization of Cs in fly ash improves was investigated by using rotary kiln. Indian feldspar, fly ash, and cesium chloride were mixed and heated at 700°C in a rotary kiln. No effect of rotating speed on Cs insolubilization was observed. After heating at 4 rpm of rotating speed and 700°C of temperature for 15 hours, 99% of the added cesium became insoluble. Even the addition ratio of Indian feldspar is reduced to about 80% of the amount of fly ash, by heating the mixture for 15 hours, 96% insolubilization of Cs was achieved. - PRODUCTION OF POROUS SODIUM CARBONATE USING VACUUM THERMAL TREATMENT OF SODIUM BICARBONATE FOR TREATMENT OF MUNICIPAL SOLID WASTE INCINERATION FLUE GAS
In-Hee Hwang, Hisashi Utsuno, Yasumasa Tojo, Takayuki Matsuo
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, III_459, III_466, Japan Society of Civil Engineers, Sep. 2022, [Peer-reviewed], [Lead author, Corresponding author]
Japanese, In this study, it was investigated that a method for producing porous sodium carbonate from coarse sodium bicarbonate by using vacuum thermal treatment instead of pulverization for the high efficiency of dry-scrubbing of solid waste incineration flue gas. The porous sodium carbonate was obtained by vacuum thermal treatment of coarse sodium bicarbonate which having a higher specific surface area than that was produced by heating the pulverized sodium bicarbonate under normal pressure at 180℃. From the results of SEM analysis and pore distribution analysis, it was found that the lower the pressure, the larger the mesopore and the specific surface area. The acid gas removal performance of the produced porous sodium carbonate increased as the specific surface area increased. In addition, the moisture in the gas leads to an increase in acid gas removal efficiency of porous sodium carbonate. - Dry scrubbing of municipal solid waste incineration flue gas using porous sodium carbonate produced via vacuum thermal treatment of sodium bicarbonate
In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto, Yasumasa Tojo, Ryoji Sameshima
Journal of Material Cycles and Waste Management, 23, 4, 1609, 1616, Springer Science and Business Media LLC, Jul. 2021, [Peer-reviewed], [Lead author, Corresponding author]
Scientific journal - Effect of phosphate compound on the reduction of the pressure drop of laboratory-scale fabric filter
Shigetoshi Takahashi, In-Hee Hwang, Takayuki Matsuo, Yasumasa Tojo, Toshihiko Matsuto
Environmental Technology, 1, 8, Informa UK Limited, 23 Apr. 2020, [Peer-reviewed], [Corresponding author]
Scientific journal - Questionnaire and onsite survey on municipal solid waste composting in Sri Lanka
Kotte Hewa Praween Madusanka, Toshihiko Matsuto, Yasumasa Tojo, In-Hee Hwang
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT, 19, 2, 804, 814, Apr. 2017, [Peer-reviewed]
English, Scientific journal - Effects of phosphoric acid sprayed into an incinerator furnace on the flue gas pressure drop at fabric filters
Shigetoshi Takahashi, In-Hee Hwang, Toshihiko Matsuto
WASTE MANAGEMENT, 52, 130, 137, Jun. 2016, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Removal and speciation of mercury compounds in flue gas from a waste incinerator
In-Hee Hwang, Hiroshi Minoya, Takayuki Matsuo, Toshihiko Matsuto, Yasumasa Tojo
Environmental Technology, 37, 21, 2723, 2730, 31 Mar. 2016, [Peer-reviewed], [Lead author]
Scientific journal - Reduction of Pressure Drops in Bag Filters by Spraying Wastewater that Includes Phosphoric Acid in Incinerators
Takahashi Shigetoshi, Hwang In-Hee, Matsuo Takayuki, Matsuto Toshihiko, Kakuta Yoshitada
Journal of the Japan Society of Material Cycles and Waste Management, 26, 38, 48, Japan Society of Material Cycles and Waste Management, Jul. 2015, [Peer-reviewed], [Corresponding author]
Japanese, An industrial waste incineration facility reported that the pressure drop in a bag filter (BF) was reduced by spraying phosphoric acid wastewater (PAW) into an incinerator. In order to investigate the effect of PAW spraying on reducing BF pressure drops, 1)the past operation data of the above incineration plant was analyzed and 2)PAW spraying experiments were carried out at the same incineration plant. From the analysis of past operation data, the reproducibility of BF pressure drop reduction by PAW spraying was confirmed. Furthermore, the phosphoric acid contained in PAW was considered to cause the BF pressure drop reduction. From the results of PAW spraying experiments, it was found that the pressure drop reduction was caused by improving the gas permeability of the dust layer on the fabric as well as increasing the amount of fly ash dislodged from the BF by spraying PAW. Phosphoric acid might contribute to increasing the particles size and the aggregation of fly ash. A decrease in electric power consumption at the induced draft fan was also confirmed during PAW spraying. PAW spraying is expected to be an effective method for reducing the operating costsof waste incineration facilities. - Subcritical hydrothermal treatment for the recovery of liquid fertilizer from scallop entrails
In-Hee Hwang, Hiroya Aoyama, Natsuki Abe, Takayuki Matsuo, Toshihiko Matsuto
ENVIRONMENTAL TECHNOLOGY, 36, 1, 11, 18, Jan. 2015, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Characterization of products obtained from pyrolysis and steam gasification of wood waste, RDF, and RPF
In-Hee Hwang, Jun Kobayashi, Katsuya Kawamoto
WASTE MANAGEMENT, 34, 2, 402, 410, Feb. 2014, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Decomposition of organochlorine compounds in flue gas from municipal solid waste incinerators using natural and activated acid clays
In-Hee Hwang, Shigetoshi Takahashi, Takayuki Matsuo, Toshihiko Matsuto
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 64, 9, 1021, 1027, 2014, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Recovery of solid fuel from municipal solid waste by hydrothermal treatment using subcritical water
In-Hee Hwang, Hiroya Aoyama, Toshihiko Matsuto, Tatsuhiro Nakagishi, Takayuki Matsuo
WASTE MANAGEMENT, 32, 3, 410, 416, Mar. 2012, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Feasibility of hydrothermal treatment for recovery of liquid fertilizer from scallop entrails
Hwang In-Hee, Aoyama Hiroya, Matsuo Takayuki, Matsuto Toshihiko, Tojo Yasumasa
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 23, 619, 619, Japan Society of Material Cycles and Waste Management, 2012
English, Scallop entrails include a lot of nutrient such as nitrogen, phosphorus, and potassium, which contain toxic heavy metal such as cadmium in digestive gland. In this work, the current situation of scallop entrails recycling was investigated. Besides, hydrothermal treatment using subcritical water (HTSW) was examined as a recovery method of liquid fertilizer from scallop entrails. 59 wt% of scallop entrails was recycled by composting and 34 wt% of that was recycled by feedstuff manufacturing respectively. In composting facilities, scallop entrails have been commonly mixed with other input wastes to adjust cadmium concentration of compost under 5 mg/kg. Some facilities have proven to be suffered from lack of input waste to mix with scallop entrails in some case. On the other hand, at the HTSW of scallop entrails and digestive gland in the condition of 200oC, RT=20 min, and L/S ratio=10, the extraction of fertilizer components such as nitrogen, phosphorus, and potassium to liquid product was maximized whereas the release of cadmium tended to be suppressed. The concentrations of heavy metals were lower than maximum permissible concentration of Fertilizer Regulation Act. From these results, HTSW was considered as one of feasible recycling methods for scallop entrails with separating cadmium from product. - Dechlorination of mono-chlorobenzene in flue gas of municipal solid waste incinerator using activated clay
Takahashi Shigetoshi, Hwang In-Hee, Matsuo Takayuki, Matsuto Toshihiko, Tojo Yasumasa
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 23, 417, 417, Japan Society of Material Cycles and Waste Management, 2012
In MSWI, various treatment processes are performed for decreasing fly ash, acid gas, heavy metals and dioxins. Nowadays, the review of each processes and the development of new technologies are done because it is needed to restraint emission of environmental pollutant substances and optimization of running cost and energy in the flue gas treatment. As one of them, the high temperature dust collection using the ceramic filter is expected to decrease running cost and energy in the plant, owing to omit the process of gas cooling and reheating. In this study, it was investigated that the decomposition availability of dioxins by dechlorination using activated clays as inorganic matters substituted for activated carbon at 300oC, the dust collecting operation temperature. As the basic study of it, using activated clays made in Japan, it was confirmed the removal rate of mono-chlorobenzene, the removal special characteristic and the effect of dechlorination, depending on temperature conditions.As a result, activated clays are divided according to their ability of dechlorination. - Survey of carbonization facilities for municipal solid waste treatment in Japan
In-Hee Hwang, Katsuya Kawamoto
WASTE MANAGEMENT, 30, 7, 1423, 1429, Jul. 2010, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Removal of ammonium chloride generated by ammonia slip from the SNCR process in municipal solid waste incinerators
In-Hee Hwang, Hiroshi Minoya, Toshihiko Matsuto, Takayuki Matsuo, Akihiro Matsumoto, Ryoji Sameshima
CHEMOSPHERE, 74, 10, 1379, 1384, Mar. 2009, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Characterization of product obtained from pyrolysis and gasification of biomass and plastic wastes
Hwang In-Hee, Kawamoto Katsuya
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 20, 153, 153, Japan Society of Material Cycles and Waste Management, 2009
Japanese, 最近、地球温暖化、化石資源の枯渇、廃棄物の適正処理・処分などの問題をめぐり、バイオマスや廃棄物に各種の熱化学的転換技術を適用して物質やエネルギーを回収しようとする研究が活発に行われている。本研究では、廃棄物の主な成分がバイオマスとプラスチックであることから、その割合が異なる廃棄物試料を用い、熱分解およびガス化反応の重要な運転パラメータであるキャリアガスと温度条件を変化させ、実験を行った。その結果、得られた生成物であるガスと炭化物を定性・定量し、各条件における生成物の物質収支と炭素およびエネルギー回収率などを把握して資源循環利用の目的に適する運転条件を求めるための基礎データとして活用しようとした。 - Pretreatment of automobile shredder residue (ASR) for fuel utilization
I. H. Hwang, S. Yokono, T. Matsuto
CHEMOSPHERE, 71, 5, 879, 885, Mar. 2008, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Evaluation of carbonization as a thermal pretreatment method for landfilling by column leaching tests
I. H. Hwang, T. Matsuto
WASTE MANAGEMENT, 28, 1, 3, 14, 2008, [Peer-reviewed], [Lead author]
English, Scientific journal - Improving the quality of waste-derived char by removing ash
I. H. Hwang, D. Nakajima, T. Matsuto, T. Sugimoto
WASTE MANAGEMENT, 28, 2, 424, 434, 2008, [Peer-reviewed], [Lead author]
English, Scientific journal - Characteristics of leachate from pyrolysis residue of sewage sludge
I. H. Hwang, Y. Ouchi, T. Matsuto
CHEMOSPHERE, 68, 10, 1913, 1919, Aug. 2007, [Peer-reviewed], [Lead author]
English, Scientific journal - Characterization of char derived from various types of solid wastes from the standpoint of fuel recovery and pretreatment before landfilling
I. H. Hwang, T. Matsuto, N. Tanaka, Y. Sasaki, K. Tanaami
WASTE MANAGEMENT, 27, 9, 1155, 1166, 2007, [Peer-reviewed], [Lead author]
English, Scientific journal - Water-soluble characteristics of chlorine in char derived from municipal solid wastes
IH Hwang, T Matsuto, N Tanaka
WASTE MANAGEMENT, 26, 6, 571, 579, 2006, [Peer-reviewed], [Lead author]
English, Scientific journal - Peak separation method for estimating apparent kinetic parameters of dehydrochlorination reactions of PVC: Independent reactions
S Kim, IH Hwang, YK Kim
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 10, 3, 484, 491, May 2004, [Peer-reviewed]
English, Scientific journal - Pyrolysis Kinetics of Agricultural Plastic Film
In-Hee Hwang, Seungdo Kim, Tae-Dong Kim, Dong-Hoon Lee
J. Korea Society of Waste Managment, 20, 4, 354, 368, 2003, [Peer-reviewed], [Lead author]
Scientific journal - Dehydrochlorination Kinetic Models of PVC during the course of Pyrolysis
Seungdo Kim, In-Hee Hwang, Dong-Hoon Kim
J. Korea Society of Waste Management, 19, 5, 602, 614, 2002, [Peer-reviewed], [Lead author]
Scientific journal - Pyrolysis Kinetic Model of Ethylene Vinyl Acetate (EVA)
Seungdo Kim, In-Hee Hwang, Soo-Hyun Chung, Youjin Eum, Eunsuk Jang, Dong-Hoon Lee
J. Korea Society of Waste Management, 19, 6, 671, 681, 2002, [Peer-reviewed], [Lead author]
Scientific journal
Lectures, oral presentations, etc.
- Subcritical hydrothermal carbonization of waste biomass: a sustainable approach for carbon recycling and carbon storage
T.W.P.A. Hansani, Yu Yoshioka, In-Hee Hwang, Yasumasa Tojo
3RINCs 2025 (The 11th 3R International Scientific Conference on Material Cycles and Waste Management), English, Poster presentation
11 May 2025 - 13 May 2025 - Numerical analysis of nitrogen oxide emissions in vertical-type waste incinerators under oxyfuel combustion
Ahmed Esaa, In-Hee Hwang, Tojo Yasumasa, Takayuki Matsuo, Kengo Matsuda
3RINCs 2025 (The 11th 3R International Scientific Conference on Material Cycles and Waste Management), English, Oral presentation
11 May 2025 - 13 May 2025 - 廃棄物系バイオマスの亜臨界水熱炭化によるカーボンリサイクルおよびカーボン貯留
吉岡優, 黄仁姫, Thennakoon Wickramasinghe, Piyumi Ayesha Hansani, 東條安匡, 松尾孝之
化学工学会第90年会
12 Mar. 2025 - 14 Mar. 2025 - 飛灰循環によるごみ焼却排ガス乾式処理の高効率化のための飛灰粉砕の検討
依田賢, 黄仁姫, 東條安匡, 松尾孝之
令和6年度廃棄物資源循環学会北海道支部研究ポスター発表会, 22 Nov. 2024 - 廃棄物系バイオマスの亜臨界水熱炭化によるカーボンリサイクルおよびカーボン貯留
吉岡優, 黄仁姫, 東條安匡, 松尾孝之
令和6年度廃棄物資源循環学会北海道支部研究ポスター発表会, 22 Nov. 2024 - 竪型ストーカ式焼却炉内におけるCO2固定化
山内健史, 黄仁姫, 東條安匡, 松尾孝之
令和6年度廃棄物資源循環学会北海道支部研究ポスター発表会, 22 Nov. 2024 - ごみ焼却排ガス中の高濃度CO2がHClおよびSOXの乾式除去効率に及ぼす影響
首藤翼, 黄仁姫, 東條安匡, 松尾孝之
令和6年度廃棄物資源循環学会北海道支部研究ポスター発表会, 22 Nov. 2024 - 二酸化炭素をキャリアガスとした廃棄物炭化で得られた炭化物の特性
岩﨑弘太郎, 黄仁姫, 東條安匡, 松尾孝之
令和6年度廃棄物資源循環学会北海道支部研究ポスター発表会, 22 Nov. 2024 - CFD simulation of NOX emission in a vertical-type waste incinerator under the conditions of CO2 combustion and N2/O2 combustion
AHMED ESAA、In-Hee Hwang, Tojo Yasumasa, Takayuki Matsuo
令和6年度廃棄物資源循環学会北海道支部研究ポスター発表会, 22 Nov. 2024 - Simulation of NOx emission during oxyfuel combustion of solid waste
EPAM, The, h International Conference on Environmental, Public Health Issues in, Asian Mega-cities
EPAM2024 The 14th International Conference on Environmental and Public Health Issues in Asian Mega-cities, Public symposium
13 Nov. 2024 - 15 Nov. 2024 - Cs 吸着ゼオライト固型化体からのCs溶出メカニズムと凍結融解，海水浸漬の影響
安河内隆仁, 東條安匡, 黄仁姫, 松尾孝之, 戸田賀奈子
第31回衛生工学シンポジウム（北大，フロンティア応用科学研究棟
07 Nov. 2024 - 08 Nov. 2024 - フェロシアン化銅吸着経由安定化体からのCs溶出に及ぼす温度の影響
西村拓己, 東條安匡, 黄仁姫, 松尾孝之, 戸田賀奈子
第31回衛生工学シンポジウム（北大，フロンティア応用科学研究棟）
07 Nov. 2024 - 08 Nov. 2024 - ごみ焼却排ガス中の高濃度CO2がHClおよびSOXの乾式除去効率に及ぼす影響
首藤翼, 黄仁姫, 東條安匡, 松尾孝之
第31回衛生工学シンポジウム（北大，フロンティア応用科学研究棟）
07 Nov. 2024 - 08 Nov. 2024 - Cs濃縮飛灰のセメント/ジオポリマー直接固型化体におけるCs溶出特性
小島脩平, 東條安匡, 黄仁姫, 松尾孝之, 戸田賀奈子
第31回衛生工学シンポジウム（北大，フロンティア応用科学研究棟）
07 Nov. 2024 - 08 Nov. 2024 - 二酸化炭素をキャリアガスとした廃棄物炭化から得られた炭化物特性
岩﨑弘太郎, 黄仁姫, 東條安匡, 松尾孝之
第31回衛生工学シンポジウム（北大，フロンティア応用科学研究棟）
07 Nov. 2024 - 08 Nov. 2024 - CFD simulation of NOX emission in a vertical-type waste incinerator under the conditions of CO2/O2 combustion and N2/O2 combustion
Ahmed ESAA, In-Hee HWANG, Yasumasa TOJO, Takayuki MATSUO
第31回衛生工学シンポジウム（北大，フロンティア応用科学研究棟）
07 Nov. 2024 - 08 Nov. 2024 - CFD simulation of NOx emission in vertical type waste incinerator under the condition of CO2/O2 combustion and N2/O2 combustion
ESAA Ahmed, HWANG In-Hee, TOJO Yasumasa, MATSUO Takayuki, MATSUDA Kengo
廃棄物資源循環学会研究発表会講演集(Web), 2024
09 Sep. 2024 - 11 Sep. 2024 - フェロシアン化銅吸着経由安定化体からのCs溶出に及ぼす温度の影響
西村拓己, 東條安匡, 黄仁姫, 松尾孝之, 戸田賀奈子
第13回環境放射能除染研究発表会，いわき市（いわき市立中央公民館）, Japanese
04 Sep. 2024 - 05 Sep. 2024 - Cs濃縮飛灰のセメント/ジオポリマー直接固型化体におけるCs溶出特性，第13回環境放射能除染研究発表会
小島脩平, 東條安匡, 黄仁姫, 松尾孝之, 戸田賀奈子
第13回環境放射能除染研究発表会，いわき市（いわき市立中央公民館）, Japanese
04 Sep. 2024 - 05 Sep. 2024 - 福島第一原子力発電所事故によるコンクリート汚染履歴を考慮したモルタル試料におけるCs-137とSr-90の汚染水浄化に伴う脱着特性の検討
小林遥, 山田一夫, 東條安匡, 黄仁姫
第13回環境放射能除染研究発表会, いわき市（いわき市文化センター）, Japanese
04 Sep. 2024 - 05 Sep. 2024 - Cs 吸着ゼオライト固型化体の凍結融解、海水浸漬によるCs溶出特性の変化
安河内隆仁, 東條安匡, 黄仁姫, 松尾孝之, 戸田賀奈子, 山田一夫, 遠藤和人
第13回環境放射能除染研究発表会，いわき市（いわき市立中央公民館）, Japanese
04 Sep. 2024 - 05 Sep. 2024 - Simulation of NOx emission from a municipal solid waste incinerator in the conditions of oxyfuel- and air-combustion
Ahmed Esaa, In-Hee Hwang, Yasumasa Tojo, Takayuki Matsuo
The 2024 Spring Conference of the Korea Society of Waste Management, Public symposium
08 May 2024 - 10 May 2024 - Effect of high concentration of CO2 on HCl removal in the dry scrubbing of solid waste incineration flue gas
Tsubasa Shuto, In-Hee Hwang, Yasumasa Tojo, Takayuki Matsuo
The 2024 Spring Conference of the Korea Society of Waste Management (Sono Calm Yeosu), Public symposium
08 May 2024 - 10 May 2024 - 飛灰循環によるごみ焼却排ガス処理の高効率化のための飛灰前処理方法の検討
依田賢, HWANG In-Hee, 東條安匡, 松尾孝之
環境工学研究フォーラム講演集(CD-ROM), 2024
2024 - 2024 - Cs leaching from the cement or geopolymer solidified Cs adsorbed zeolite (natural mordenite)
Yasukochi Takahito, Tojo Yasumasa, Hwang In-Hee, Matsuo Takayuki, Toda Kanako, Yamada Kazuo, Endo Kazuto
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2024, Japan Society of Material Cycles and Waste Management, Japanese
2024 - 2024, Cs leaching was evaluated by a long-term leaching test on cement-geopolymer (GP) solidified Cs adsorbed zeolite (natural mordenite), a candidate for final disposal of fly ash generated from thermal treatment of decontaminated waste. The leaching tests were conducted in accordance with the ANSI 16.1 method, replacing the solvent in appropriate interval. In addition, changes in Cs leaching behavior due to freezing and thawing of the specimens and immersion in seawater were evaluated, assuming specimen degradation and contact with high-salinity solution, which are expected in an actual disposal environment. As a result, it was clarified that Cs leaching from the cement/GP solidified Cs adsorbed zeolite is determined by diffusion in the solid phase. Freeze-thawing did not affect the Cs leaching rate, but when the specimen was immersed in sea water Cs leaching was accelerated. When the cement solidified body was immersed in seawater, Cs leaching was suppressed by surface precipitates. The cumulative Cs elution rate was below 0.6% even after 100 days of immersion in seawater, and the incremental Cs concentrations in leachant were within the order of concentration standards in environmental water. The results indicate that zeolites can be promising candidate as a final disposal form that retains Cs for a long period of time. - Comparison of NOX emission behavior for air- and oxyfuel- combustion of solid waste in a vertical combustor
HWANG IN-HEE, Ogaya Yuki, Esaa Ahmed, Tojo Yasumasa, Matsuo Takayuki, Masuda Kengo
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2024, Japan Society of Material Cycles and Waste Management, Japanese
2024 - 2024, In the context of global warming, various efforts are being made to reduce GHG emissions in the waste sector. CCUS of CO2 in exhaust gas can be one of the effective methods. Oxyfuel combustion has attracted attention as a new combustion method, in which a mixture of oxygen and exhaust gas is injected into the furnace for combustion. Various studies of oxyfuel combustion have been conducted in Japan toward the commercialization of oxyfuel combustion power plants, , mainly at thermal power plants and its effect of reducing NOX emissions has been reported. In the case of waste combustion, fuel NOX accounts for the majority of the NOX generated, and the effect of reducing NOX by oxyfuel combustion is not clear. In this study, we investigated the NOX generation characteristics of air and oxyfuel combustion of waste through laboratory experiments and simulations using a vertical stoker-type incinerator as a model. As a result, no significant difference was found in the amount of NOX generated by both air and oxyfuel combustions. One of the reasons is thought to be that the effect of reduction of thermal NOX by oxyfuel combustion is relatively decreased in the operating temperature range of waste incinerators. - Characterization of char derived from solid wastes with CO2 as career gas
Iwasaki Kotaro, Hwang In-hee, Tojo Yasumasa, Matsuo Takayuki
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2024, Japan Society of Material Cycles and Waste Management, Japanese
2024 - 2024, Carbonisation is focused as a carbon recycling and carbon storage technology for waste. The resulting char can be used for a variety of purposes. The ash-rich char also has the effect of making solid carbon more persistent and storing it in the ground. In conventional carbonisation, nitrogen is used as a carrier gas, pyrolysis gas is burnt and the combustion gas is returned to the carbonisation furnace and used as a carrier gas (heat source) for carbonisation. When the carrier gas is carbon dioxide and the combustible gas is burnt with oxygen, the main component of the combustion gas is carbon dioxide, which can be used as a carrier gas for carbonisation and as a CCUS for exhaust gas, even negative emissions of carbon can be expected. In this study, the characteristics of carbides produced with carbon dioxide as a carrier gas were evaluated from the two axes of carbon recycling (fuel and material utilisation) and carbon storage (pre-processing before landfill), comparing them with carbides produced with nitrogen carrier gas. Under the conditions of the present study, the carbides obtained were almost the same as those produced by conventional carbides. - Effect of high concentration of CO2 in waste Incineration flue gas on HCl and SOx removal rate
Shuto Tsubasa, Hwang In-Hee, Tojo Yasumasa, Matsuo Takayuki
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2024, Japan Society of Material Cycles and Waste Management, Japanese
2024 - 2024, Oxyfuel combustion technology, in which pure oxygen is mixed with recirculated exhaust gas and supplied to the furnace instead of combustion air, is attracting attention as part of CCUS technology in response to the global warming issue. Since the main component of the exhaust gas in this combustion method is CO2, high concentrations of CO2 can be directly recovered without separating N2 gas, which is a great advantage for reducing total CO2 emissions. In this study, acid gas removal experiments using slaked lime were conducted in a lab-scale experiment simulating a dust collector to investigate the effect of applying oxygen combustion to a waste incineration facility on conventional acid gas dry removal. As a result, it was confirmed that the acid gas removal rate decreased due to the reaction between slaked lime and CO2 under high temperature conditions, suggesting that the simultaneous application of oxygen combustion and high temperature dust collection may reduce the acid gas removal efficiency. - Preparation of stabilized bosies by using copper ferrocyanide and evaluation of cesium leaching characteristics
Yuke HU, Yasumasa TOJO, In-Hee HWANG, Takayuki MATSUO
The 12th China-Japan Joint Conference on Material Recycling and Waste Management, English, Oral presentation
28 Nov. 2023 - 30 Nov. 2023 - Characteristics of pyrolysis and combustion characteristics of solid waste under high concentration of CO2 atmosphere
Yamauchi Takeshi, HWANG IN-HEE, TOJO YASUMASA, MATSUO TAKAYUKI, MASUDA KENGO
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2023, Japan Society of Material Cycles and Waste Management, Japanese
2023 - 2023, Oxyfuel combustion is one of promising solid waste incineration methods as part of CCUS technology in response to the global warming issue. Since the main component of the exhaust gas is CO2 by supplying pure oxygen with recirculated exhaust gas to the furnace instead of combustion air, the high concentrations of CO2 can be directly recovered without separating N2 gas, which is a great advantage for reducing total CO2 emissions. In this study, thermogravimetric analysis and kinetics analysis of RDF pyrolysis and char combustion were conducted under CO2 and N2 atmosphere to investigate the effect of oxyfuel combustion on waste incineration in a vertical stoker-type furnace. As a result, no significant differences were observed in pyrolysis and combustion behavior depending on two different atmospheric gases. The results of kinetics analysis showed that the kinetics triplets tended to be somewhat larger when CO2 gas was used for reaction, but the difference was not so great especially for char combustion. It was concluded that the decomposition rate of the sample was dominated by the O2 gas rather than N2 or CO2 gas during combustion. - Effect of intermittent water vapor addition on the removal efficiency of HCl and SOX in dry scrubbing of waste incineration flue gas
MASUDA YUDAI, HWANG IN-HEE, TOJO YASUMASA, MATSUO TAKAYUKI, MINOYA HIROSHI
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2023, Japan Society of Material Cycles and Waste Management, Japanese
2023 - 2023, In this study, the direct addition of water vapor to the waste incineration flue gas was investigated to improve the acid gas removal efficiency of dry scrubbing using slaked lime. Using a laboratory-scale experimental apparatus simulating a bag filter (BF), the effect of water vapor addition conditions on the reaction mechanism of slaked lime and acid gas as well as the acid gas removal rate was evaluated. As a result, the removal efficiency of hydrogen chloride was most improved when the water vapor was added by the 200% of the amount of slaked lime deposited on the BF. However, the improvement of the removal efficiency of sulfur oxides was not observed under the coexistence of hydrogen chloride even in the same condition of water vapor addition. For the application of this method to the actual dry scrubbing system, further investigation should be performed in relation to the operating conditions such as the numbers and intervals of water vapor addition. - Leaching behavior of hexavalent chromium from refractory brick under humid environment
Yasumasa Tojo, Kotone Matsui, In-Hee Hwang, Takayuki Matsuo
The 11th China-Japan Joint Conference on Material Recycling and Waste Management, English, Oral presentation
17 Nov. 2022 - 18 Nov. 2022 - Improving the reaction efficiency of calcium hydroxide and hydrogen chloride in dryscrubbing of municipal solid waste incineration flue gas
Yuuki Ogaya, In-Hee Hwang, Takayuki Matsuo, Yasumasa Tojo
The 2022 Spring Conference of the Korea Society of Waste Management, 12 May 2022, English, Poster presentation
12 May 2022 - 12 May 2022 - Changes in solid waste management and impact of global warming on leachate generation in Greenland
Takahito Yasukochi, Yasumasa Tojo, In-Hee Hwang
The 2022 Spring Conference of the Korea Society of Waste Management, 12 May 2022, English, Poster presentation
12 May 2022 - 12 May 2022 - Prodution of porous sodium carbonate for dry-scrubbing of MSWI flue gas by vacuum thermal treatment of sodium bicarbonate (Part 2)
HWANG In-Hee, UTSUNO Hisashi, MATSUO Takayuki, TOJO Yasumasa
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2022, Japan Society of Material Cycles and Waste Management, Japanese
2022 - 2022, 重曹を用いた酸性ガスの乾式処理において、高い除去率を得るために行っていた重曹の微粉化の代わりに重曹を粉砕せず真空加熱し多孔質の炭酸ナトリウムをあらかじめ製造し、酸性ガス処理に用いる方法を検討した。その結果、圧力が多孔質炭酸ナトリウムの比表面積に支配的な製造条件であり、低圧のほど重曹の分解で生成したガスが固体表面から放出しやすくなり、より細かい細孔が発達することが確認できた。比表面積4m²/g以上の炭酸ナトリウムであれば、既存の微粉重曹と同等の酸性ガス除去性能が得られること、なおかつ、そのような多孔質炭酸ナトリウムは粗重曹を180℃、50kPaでの真空加熱で製造できることがわかった。 - Clarification of the chemical form of lead in fly ash insolubilized by co-heating with aluminosilicate
Tsunematsu Miyabi, Tojo Yasumasa, Matsuo Takayuki, Hwang In-Hee
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2022, Japan Society of Material Cycles and Waste Management, Japanese
2022 - 2022, Fly ash generated from municipal solid waste incinerator contains high concentrations of hazardous heavy metals. So it must be treated to inhibit their leaching for final disposal. In previous study, it was confirmed that cesium leaching was significantly suppressed after co-heating with aluminosilicates. Cesium was captured in amorphous phase and insolubilized. When this method was applied to municipal solid waste incineration fly ash, a decrease in lead leaching concentration was also confirmed. However, since lead forms hydroxide precipitates at high pH, it is not clear whether the reduction in leaching concentration is due to trapping by aluminosilicates or precipitation formation. The objective of this study was to clarify the chemical form of lead after co-heating with aluminosilicates. After heating of the mixture of aluminosilicates and fly ash and removing soluble lead, pH-dependence test was performed. As a result, the lead leaching concentration increased with decreasing pH, and there was no difference in the elution concentration with and without co-heating. Thus, decrease of leaching concentration of lead after co-heating with aluminosilicates is not capturing but just formation of hydroxides. - Waste-to-Energy for developing decarbonized society in Japan
In-Hee Hwang
Environmental Technology Annual Conference 33 EEAT'21 and Mini-APLAS, English, Oral presentation
23 Nov. 2021 - 24 Nov. 2021 - Utilization of bottom ash for the removal of acidic gases generated in municipal solid waste incinerator
Nakamura Tomoya, Hwang In-Hee, Matsuo Takayuki, Tojo Yasumasa, Toshihiko Matsuto, Sameshima Ryoji
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2021, Japan Society of Material Cycles and Waste Management, Japanese
2021 - 2021, ごみ焼却より発生する焼却灰と飛灰成分の約2割はカルシウムである。しかし、飛灰中のCa化合物は酸性ガスとの反応生成物が主成分であることに対し、焼却灰はCaCO3、CaO、Ca鉱物類が主成分であり、その中でもCaO、CaCO3は酸性ガス除去に有効な成分である。本研究ではごみ焼却排ガス処理に使用される消石灰の代替として焼却灰を用いる案を検討した。300 µm以下の水冷後の焼却灰（Ca含有量：39～46%）は，170℃にて消石灰の約6～8割に相当するHCl除去性能を示した。焼却灰のうちの有効成分として10～15％であるもののBF吹込み消石灰の一部を代替できる可能性が十分考えられる。一方、焼却灰の炉内噴霧は炉内での直接的なHCl除去には効果がないが、高温下でCa化合物がCaOに分解されることにより、排ガスとともに下流側に流れる際にHCl除去に寄与する可能性が示唆された。 - Study on the capturing mechanism of Cs in fly ash by amorphized potassium feldspar
Soga Takaaki, Tojo Yasumasa, Matsuo Takayuki, Hwang In-Hee, Matsuto Toshihiko
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2021, Japan Society of Material Cycles and Waste Management, Japanese
2021 - 2021, Potassium feldspar captures Cs by co-heating with cesium-containing fly ash. The optimum temperature is 700 °C. However, it is unclear why Cs is captured at 700 °C. Therefore, in this study, amorphized potassium feldspar and CsCl were co-heated at various temperatures, and the form of each element contained in the residue after heating was analyzed. And the structural change in the heating process was also investigated. As a result, it was clarified that ion exchange occurred among them because almost the same amount of K and Na as Cs, which became poorly soluble, became easily soluble. The exchange reaction proceeded rapidly from around 400 ° C. From the XRD analysis of the heating process, although CsCl disappeared, the formation of KCl could not be confirmed, suggesting that a solid solution of Cs and K was formed. Furthermore, it was considered possible that these existed as amorphous rather than crystalline. - Study on the method to improve capturing efficiency of cesium in fly ash by co-heating with alkali feldspar
Okada Saki, Tojo Yasumasa, Matsuo Takayuki, Matsuto Toshihiko, Hwang In-Hee
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2021, Japan Society of Material Cycles and Waste Management, Japanese
2021 - 2021, Since cesium in fly ash generated from thermal treatment for volume reduction process is highly concentrated and easily soluble, it is effective to make cesium insoluble for safe disposal. In previous studies, insolubilization of cesium was achieved by co-heating fly ash containing cesium with alkali feldspar. In this reaction, potassium in feldspar exchanges with cesium in fly ash, and feldspar captures cesium into amorphous phase and makes cesium insoluble. In previous studies, though cesium capturing efficiency was more than 90%, it is desirable to increase the efficiency to nearly 100% because cesium that cannot be captured requires further treatment. In this study, methods to further improve cesium capturing efficiency were examined. It was supposed that cesium was not captured due to insufficient contact between potassium and cesium. Thus, whether the capturing efficiency could be increased by improving the contact condition was examined. As a result, it was found that premixing by planetary mill increased the contact opportunities between potassium and cesium and the capturing efficiency was increased to almost 100%. Furthermore, it was found that the capturing efficiency was improved by repeating heating and cooling. - Effect of internal conditions in the hazardous waste landfill on the leaching behavior of heavy metals in fly ash
Takahashi Hisashi, Tojo Yasumasa, Matsuo Takayuki, Hwang In-Hee, Matsuto Toshihiko
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2021, Japan Society of Material Cycles and Waste Management, Japanese
2021 - 2021, Hazardous waste landfill where waste exceeding the leaching criteria is disposed of doesn't allow rainwater or air are entering. As the results, waste may keep its leaching potential similar to that at the time of disposal. In this study, numerical calculations were performed in order to confirm whether or not the leaching suppression of heavy metals, which occurs in non-hazardous waste landfill, occurs, when the internal condition of hazardous waste landfill is intentionally controlled. The model used was a combination of a landfill simulator that mainly calculated degradation process of organic matter and a geochemical model (PHREEQC). MSW fly ash was subjected to the calculation. And although no intrusion of rainwater was set, the initial moisture content was set to be maintained during entire calculation period. In addition, regarding gas composition, CO2 concentration was changed for 350ppm, 50%, 80%, and 100%. The calculation was performed for 100 years. In case of Pb, the mineral species produced were Pb(OH)2, PbCO3, Pb3(OH)2(CO3)2. And the higher the CO2 concentration, the faster the time when PbCO3 becomes the main component. And the liquid phase concentration of Pb was dominated by it. - Insolubilization of lead in MSW fly ash by co-heating with aluminosilicate
GUAN Zihao, TOJO Yasumasa, HWANG In-Hee
廃棄物資源循環学会研究発表会講演集(Web), 2020
2020 - 2020 - Study on evaluation method of Cs and Sr intrusion into concrete waste generated by demolition of Fukushima nuclear power plant
Yokokawa Masaya, Yamada Kazuo, Tojo Yasumasa, Matsuto Toshihiko, Matsuo Takayuki, Hwang In-Hee
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2020, Japan Society of Material Cycles and Waste Management, Japanese
2020 - 2020, Demolition work of Fukushima nuclear power plant is going to be commenced. Since the volume of contaminated waste concrete is estimated to be huge, volume reduction of it is required. In order to separate clean concrete from contaminated concrete, it is necessary to know how deep radionuclide invaded into concrete. Considering the dose rate, Cs-137 and Sr-90 deem to be important. However, they have different mobility, it is necessary to separate them. In the previous study, by focusing on the energy difference of beta-ray between them, separation was attempted putting a PET plate shield between the IP and the contaminated concrete sample, but the measurement with sufficient accuracy was not obtained. In this study, to improve the accuracy of separation, separation of Cs and Sr was attempted by using shields with different densities and thicknesses. The shielding ability is determined by the product of the density and the thickness. As a result of measurement for various set of shield and concrete samples which are exposed to Cs-137 and Sr-90, high separation accuracy was obtained when using a shield with high density and thin thickness. - Study on insolubilization of radioactive Cs in contaminated fly ash using aluminosilicate
Tsuboi Naruhiro, Tojo Yasumasa, Arai Hiroyuki, Matsuo Takayuki, Matsuto Toshihiko, Hwang In-Hee
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2020, Japan Society of Material Cycles and Waste Management, Japanese
2020 - 2020, It has been confirmed in previous studies that aluminosilicate (alkali feldspar or feldspar synthetic reagent (sol reagent)) captures Cs in fly ash by co-heating and makes Cs insoluble. However, up to now, stable Cs has been used, and it has not been confirmed whether this capturing occurs even actual polluted ash containing radioactive Cs. Therefore, in this study, the co-heating experiment with aluminosilicate was conducted using the actual contaminated fly ash generated in Fukushima prefecture and the simulated contaminated ash added with radioisotope (Cs-137). As a result, the aluminosilicate captured Cs even if it was radioactive Cs, and makes Cs insoluble. It was confirmed that the capturing efficiency is higher as the amount of aluminosilicate is higher, and that if the aluminosilicate of about 3 times the amount of fly ash is added, Cs becomes insoluble state at an efficiency of 98% or more. - Long-term change of leaching behavior of hexavalent chromium contained in the refractory materials disposed at the hazardous waste landfill and its control measure
Yokoi Rina, Tojo Yasumasa, Matsuo Takayuki, Matsuto Toshihiko, Hwang In-Hee, Yamada Masato
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2020, Japan Society of Material Cycles and Waste Management, Japanese
2020 - 2020, The hazardous waste landfill site is required to appropriately store the harmful substances contained in the hazardous waste and prevent the discharge of them to the outside, semipermanently. From a long-term perspective, the risk of structural deterioration and disasters can be considered, but in such an event, the release of harmful substances must be avoided. A previous study investigating the waste actually accepted at the hazardous waste landfill site found that refractory bricks used in the melting furnace was major waste accepted. This is because the leaching concentration of hexavalent chromium exceeds the criterion. Therefore, in this study, we conducted a weathering acceleration experiment on refractory bricks from which hexavalent chromium leaches out, and examined the effect of environmental conditions in the hazardous waste landfill site on the dissolution behavior of chromium. As a result, it was confirmed that under humid conditions, the leaching of hexavalent chromium was significantly reduced. - Improvement of the capturing ratio of Cs in concentrates generated by volume reduction process using aluminosilicate
Wada Kota, Tojo Yasumasa, Matsuo Takayuki, Matsuto Toshihiko, Hwang In-Hee
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2020, Japan Society of Material Cycles and Waste Management, Japanese
2020 - 2020, The thermal treatment for volume reduction of decontamination waste generated by the Fukushima Daiichi Nuclear Power Plant accident has an issue that it generates fly ash containing easily soluble and high concentration of Cs. Since long-term safe storage of fly ash is required, to change the form of Cs from mobile to immobile is necessary. Co-heating fly ash containing Cs with aluminosilicate achieves insolubilization of Cs. However, the rate of insoluble Cs decreased as the fly ash amount increased. The aim of this study is to maintain the high rate of insoluble Cs even when the amount of fly ash increased. Since it was found that the alkaline element in the fly ash inhibited the capturing of Cs, we thought that by the addition of silicate minerals which don’t contain alkaline element (diatomaceous earth, kaolinite), they may capture the alkaline element. As a result, it was confirmed that these minerals are possible to capture alkali elements and increase the ratio of insoluble Cs. Especially, it was found that by adding kaolinite at a heating temperature of 800°C, the rate of insoluble Cs could be maintained at the highest rate. - Study on low leaching rates of salts from bottom ashes municipal solid waste incinerators
Kusakabe Hajime, Hwang In-Hee, Matsuo Takayuki, Tojo Yasumasa, Matsuto Toshihiko
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2020, Japan Society of Material Cycles and Waste Management, Japanese
2020 - 2020, 焼却主灰の分析を行った先行研究において，可溶性金属と考えられているNa, Cl, K等の溶出率が非常に低いことがわかった。その原因の一つとして主灰の水冷後の炭酸化が挙げられ，生成したカルサイト（CaCO3）が主灰粒子を被覆し，塩類や重金属類の不溶化を引き起こしていると考えられた。仮説を検証するために，本研究では，告示13号溶出試験に加え，pH依存性試験，900℃加熱後の溶出試験を行い，溶出率の変化を調べた。しかし，Ca，ICの溶出率はpH依存性を示したことに対し，Na, K, Clの溶出率はpHに依存せずほぼ一定でお互いに溶出挙動が異なっており，炭酸化が直接的な原因とは言えない結果となった。一方，主灰の900℃加熱前後の溶出試験結果を比較すると，Na, K, Clにおいて加熱灰の溶出濃度が加熱前の約10%まで低下するなど，焼却過程における主灰の溶融度合が塩類の溶出に大きく影響していると推察された。 - Reduction of hydrogen chloride in the furnace of vertical type incinerator
In-Hee Hwang, Yuto Futagami, Takayuki Matsuo, Yasumasa Tojo, Toshihiko Matsuto
The 23rd Korea-Japan Joint International Session, The 2019 Spring Conference of the Korea Society of Waste Management (International Convention Center JEJU), 20 May 2019, English, Poster presentation - Evaluation methodology on flowability of on-site produced slaked lime
Kyohei Gonda, In-Hee Hwang, Toshihiko Matsuto, Takayuki Matsuo, Yasumasa Tojo, Ryo Kinoshita
The 23rd Korea-Japan Joint International Session, The 2019 Spring Conference of the Korea Society of Waste Management, 20 May 2019, English, Poster presentation
[International presentation] - Factors affecting on leaching of lead from municipal solid waste incinerator residues
Takaaki Soga, In-Hee Hwang, Toshihiko Matsuto, Takayuki Matsuo, Yasumasa Tojo
The 23rd Korea-Japan Joint International Session, The 2019 Spring Conference of the Korea Society of Waste Management, 20 May 2019, English, Poster presentation
[International presentation] - Material balance of bio-drying MBT facility for solid fuel production
G.Y. Ham, T. Matsuto, T. Matsuo, N. Tsuboi, Y. Tojo, I. H. Hwang
The 4th Symposium of International Waste Working Group Asian Regional Branch, 20 Feb. 2019, English, Poster presentation
20 Feb. 2019 - 22 Feb. 2019, [International presentation] - On-site production of slaked lime for the treatment of MSWI flue gas: effects of production conditions on acid gas removal and flow property
I.-H. Hwang, K. Gonda, T. Matsuo, Y. Tojo, T. Matsuto
IWWG-ARB 2019, The 4th Symposium of IWWG Asian Regional Branch, English, Oral presentation
20 Feb. 2019 - 22 Feb. 2019 - Generation and reduction of hydrogen chloride gas in vertical type incinerator
Hwang In-Hee, Futagami Yuto, Matsuo Takayuki, Matsuto Toshihiko, Tojo Yasumasa, Yamada Yuji
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2019, Japan Society of Material Cycles and Waste Management, Japanese
2019 - 2019, 竪型ストーカ炉は，一定高さで堆積させたごみを炉下から低空気比の一次燃焼空気を供給することで熱分解し，発生した熱分解ガスを二次燃焼空気より効率よく燃焼するものである。消石灰による処理前から排ガス中塩化水素濃度が低く，炉内のごみ層の中でアルカリ金属より捕捉された可能性が考えられた。しかし，竪型ストーカ炉の主灰への塩素移行量を調査した結果，30%程度であり，従来ストーカ炉との差は認められなかった。一方，竪型ストーカ炉の排ガス中塩化水素濃度の測定結果から，塩化水素の捕捉は主に焼却炉と再燃焼室，さらには減温塔の間で起こっていると示唆された。そこには，ばいじん中の酸化カルシウムと塩化水素の反応が関与している可能性が考えられた。本現象が竪型ストーカ炉特有のものであるかは今後の課題である。従来ストーカ炉においても同様の調査を行い，炉内での塩化水素低減メカニズムを明らかにする必要がある。 - 消石灰の焼却施設オンサイト製造における高反応化およびハンドリング性の改善に関する研究
黄 仁姫, 酒井 裕太郎, 松尾 孝之, 東條 安匡, 松藤 敏彦
第29回廃棄物学会研究発表会, 12 Sep. 2018, Japanese
[Domestic Conference] - コンバインド式メタン発酵施設におけるマテリアルフロー分析
坪井 成浩, 松藤 敏彦, 松尾 孝之, カナバル エリザ, 東條 安匡, 黄 仁姫
第29回廃棄物学会研究発表会, 12 Sep. 2018, Japanese, Oral presentation
[Domestic Conference] - Estimation of sorting efficiency and material flow in combined type anaerobic digestion facility
N. Tsuboi, T.Matsuto, T. Matsuo, Y.Tojo, I-H. Hwang
22nd Korea-Japan Joint International Session, The 2018 Spring Conference of the Korea Society of Waste Management, 10 May 2018, English, Poster presentation
[International presentation] - Influencing factor on acid gas removal and flow characteristics of slaked lime in onsite production process
I-H Hwang, Y.Sakai, T.Matsuo, Y.Tojo, T. Matsuto
22nd Korea-Japan Joint International Session, The 2018 Spring Conference of the Korea Society of Waste Management, 10 May 2018, English, Poster presentation
[International presentation] - ごみ焼却排ガス乾式処理での塩化水素と消石灰の反応メカニズム
黄 仁姫, 須藤 航, 松尾 孝之, 東條 安匡, 松藤 敏彦
第28回廃棄物学会研究発表会, 06 Sep. 2017, Japanese
[Domestic Conference] - Production of high-performance slaked lime for waste incineration flue gas treatment
Yuto Futagami, In-Hee Hwang, Takayuki Matsuo, Yasumasa Tojo, Toshihiko Matsuto
21th Korea-Japan Joint International Session, The 2017 Spring Conference of the Korea Society of Waste Management, 11 May 2017, English, Poster presentation
[International presentation] - Experimental study on reaction of slaked lime and hydrogen chloride in dry scrubbing of flue gas generated from waste incinerator
In-Hee Hwang, Wataru Sudo, Takayuki Matsuo, Yasumasa Tojo, Toshihiko Matsuto
21th Korea-Japan Joint International Session, The 2017 Spring Conference of the Korea Society of Waste Management, 11 May 2017, English, Poster presentation
[International presentation] - Evaluation of operational characteristics of vertical type incinerator
Kohei Yamanaka, In-Hee Hwang, Takayuki Matsuo, Yasumasa Tojo, Toshihiko Matsuto, Yuji Yamada, Ryoji Sameshima
21th Korea-Japan Joint International Session, The 2017 Spring Conference of the Korea Society of Waste Management, 11 May 2017, English, Poster presentation
[International presentation] - Future Research Needs for MBT in Asia Based on Literature Review Survey
Eliza CANABAL, Yasumasa TOJO, In-Hee HWANG, Toshihiko MATSUTO
IWWG-ARB Symposium, 12 Apr. 2017, English, Oral presentation
12 Apr. 2017 - 14 Apr. 2017, [International presentation] - Mechanical Biological Treatment (MBT) of Waste
Hwang In-Hee
Material Cycles and Waste Management Research, 31 Mar. 2017, Japan Society of Material Cycles and Waste Management, Japanese
31 Mar. 2017 - 31 Mar. 2017 - ごみ焼却排ガスの中和処理用消石灰と塩化水素の反応機構に関する研究
黄仁姫, 向山和晃, 松尾孝之, 松藤敏彦, 山田裕史
第38回全国都市清掃研究・事例発表会, 18 Jan. 2017, Japanese, Oral presentation
[Domestic Conference] - リン酸噴霧による焼却施設バグフィルター差圧変化に及ぼすろ布付着灰特性変化に関する研究
細川拓也, 黄仁姫, 松藤敏彦, 松尾孝之, 倉田昌明, 前田典生
第24回衛生工学シンポジウム, 15 Nov. 2016, Japanese
[Domestic Conference] - 竪型ストーカ式焼却炉の運転特性評価
山中康平, 黄仁姫, 松尾孝之, 松藤敏彦
2016 年度 廃棄物資源循環学会北海道支部ポスター発表会, 25 Oct. 2016, Japanese
[Domestic Conference] - 焼却排ガス処理用の高性能消石灰製造
二上雄斗, 黄仁姫, 松尾孝之, 松藤敏彦
2016 年度 廃棄物資源循環学会北海道支部ポスター発表会, 25 Oct. 2016, Japanese
[Domestic Conference] - 消石灰を用いたごみ焼却排ガス中の塩化水素除去機構の解明
須藤航, 黄仁姫, 松尾孝之, 松藤敏彦
2016 年度 廃棄物資源循環学会北海道支部ポスター発表会, 25 Oct. 2016, Japanese
[Domestic Conference] - リン酸化合物添加によるバグフィルター差圧低減効果に関する研究
髙橋 滋敏, 黄 仁姫, 松尾 孝之, 松藤 敏彦, 倉田 昌明, 前田 典生
第27回廃棄物学会研究発表会, 27 Sep. 2016, Japanese
[Domestic Conference] - アンケート調査および飛灰分析によるごみ焼却排ガス中酸性ガス乾式処理の機構解明, 第27回廃棄物学会研究発表会講演論文集
向山 和晃, 黄 仁姫, 松尾 孝之, 松藤 敏彦
第27回廃棄物学会研究発表会, 27 Sep. 2016, Japanese
[Domestic Conference] - Reaction of Calcium Hydroxideand Hydrogen Chloride in Dry Scrubbing Process of Municipal Solid Waste Incineration Plant
In-Hee Hwang, Kazuaki Mukaiyama, Takayuki Matsuo, Toshihiko Matsuto, Ryoji Sameshima
9th i-CIPEC, 20 Sep. 2016, English, Oral presentation
[International presentation] - Effect of phosphate compound on the reduction of pressure drop at a lab-scale of fabric filter
Shigetoshi Takahashi, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto, Masaaki Kurata, Norio Maeda
9th i-CIPEC, 20 Sep. 2016, English, Oral presentation
[International presentation] - Investigation on reaction characteristics of calcium hydroxide and hydrogen chloride in flue gas of municipal solid waste incinerator by questionnaire survey and fly ash analysis
In-Hee Hwang, Kazuaki Mukaiyama, Takayuki Matsuo, Toshihiko Matsuto, Ryoji Sameshima
The 7th China-Japan Joint Conference on Material Recycling and Waste Management, 18 Jul. 2016, English, Oral presentation
[International presentation] - Calcium compounds in fly ashes discharged from municipal solid waste incinerators adapting a drying scrubbing and fabric filters
In-Hee Hwang, Kazuaki Mukaiyama, Takayuki Matsuo, Toshihiko Matsuto, Ryoji Sameshima
The 9th Intercontinental Landfill Research Symposium, 13 Jun. 2016, English
[International presentation] - リン酸化合物添加によるバグフィルター差圧上昇抑制に関する研究
髙橋 滋敏, 黄 仁姫, 松尾孝之, 松藤 敏彦, 倉田昌明, 前田典生
平成28年度廃棄物資源循環学会春の研究発表会（川崎）, 27 May 2016, Japanese
[Domestic Conference] - Effect of phosphoric acid spray on the change of pressure drop and physical property of fly ash at fabric filter of incinerator
Takuya Hosokawa, In-Hee Hwang, Shigetoshi Takahashi, Takayuki Matsuo, Toshihiko Matsuto, Masaaki Kurata, Norio Maeda
20th Korea-Japan Joint International Session, The 2016 Spring Conference of the Korea Society of Waste Management, 16 May 2016, English, Poster presentation
[International presentation] - Study on mechanism of calcium hydroxide and acidic gases in flue gas of municipal solid waste incinerator
In-Hee Hwang, Kazuaki Mukaiyama, Takayuki Matsuo, Toshihiko Matsuto, Ryoji Sameshima
20th Korea-Japan Joint International Session, The 2016 Spring Conference of the Korea Society of Waste Management, 12 May 2016, English, Poster presentation
[International presentation] - Study on reaction mechanism of calcium hydroxide and acid gases in municipal solid waste incinerator by questionnaire survey and fly ash analysis
Mukaiyama Kazuaki, Hwang In-Hee, Matsuo Takayuki, Matsuto Toshihiko
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2016, Japan Society of Material Cycles and Waste Management, Japanese
2016 - 2016, ごみ焼却施設における消石灰を用いた酸性ガスの除去において、HClと消石灰の反応生成物はCaCl2であると考えられてきたが、近年の研究では中間生成物のCaClOHが確認されている。この反応の進行具合によってはHClの除去量に差が生じ、排ガス処理の効率性とコストに影響を及ぼす。よって本研究では実際の焼却施設を対象として、排ガス処理に関するアンケート調査と飛灰の化学分析を行い、消石灰とHClとの反応生成物の形態、ならびにその形態に影響を与える条件を調査した。結果、実稼働中の焼却施設においても、消石灰吹込み量やガス温度といった条件に関わらず、反応生成物はCaCl2ではなくCaClOHであることが判明した。その理由として、排ガス中のHCl濃度よりも過剰に吹き込まれた消石灰によってCaClOHの生成反応が優先されること、CaClOHとHClの反応速度が遅くCaCl2生成まで至らないことが挙げられた。 - リン酸吹込みによる焼却施設のバグフィルター差圧変化と飛灰の物性変化に関する研究
須藤 航, 黄 仁姫, 高橋滋敏, 松藤敏彦, 松尾孝之, 倉田昌明, 前田典生, 角田芳忠
第23回衛生工学シンポジウム, 12 Nov. 2015, Japanese
[Domestic Conference] - リン酸廃液の焼却炉内噴霧によるバグフィルター差圧への短期的・長期的影響
髙橋滋敏, 黄仁姫, 松藤敏彦, 角田芳忠
第23回衛生工学シンポジウム, 12 Nov. 2015, Japanese
[Domestic Conference] - ベンチスケール実験装置を用いたリン酸吹込みによるバグフィルタ差圧低減に関する研究
黄仁姫, 倉田昌明, 須藤航, 高橋滋敏, 松尾孝之, 松藤敏彦, 前田典生, 角田芳忠
第26回廃棄物学会研究発表会, 02 Sep. 2015, Japanese
[Domestic Conference] - リン酸廃液の焼却炉内噴霧によるバグフィルター差圧への短期的・長期的影響
髙橋滋敏, 黄仁姫, 松藤敏彦
第26回廃棄物学会研究発表会, 02 Sep. 2015, Japanese
[Domestic Conference] - Removal of hydrogen chloride in flue gas generated from waste incinerator using calcium hydroxide
In-Hee Hwang, Ryo Kinoshita, Takayuki Matsuo, Toshihiko Matsuto
The 6th China-Japan Joint Conference, 07 Aug. 2015, English, Oral presentation
[International presentation] - リン酸廃液の焼却炉内噴霧によるバグフィルター差圧への短期的・長期的影響
髙橋 滋敏, 黄 仁姫, 松藤 敏彦, 角田 芳忠
平成27年度廃棄物資源循環学会春の研究発表会（川崎）, 28 May 2015, Japanese
[Domestic Conference] - Effect of phosphoric acid spray on pressure drop of fabric filter and physical property of fly ash in solid waste incinerator
Wataru Sudo, In-Hee Hwang, Shigetoshi Takahashi, Toshihiko Matsuto, Masaaki Kurata, Norio Maeda, Yoshitada Kakuta
The 2nd 3R International Scientific Conference, Daejeon, Korea, English, Poster presentation
21 May 2015 - 23 May 2015 - Reaction Characteristics of Calcium Hydroxide and Hydrogen Chloride in Flue Gas Generated from Waste Incinerator
In-Hee Hwang, Ryo Kinoshita, Takayuki Matsuo, Ryoji Sameshima, Toshihiko Matsuto
The 2nd 3R International Scientific Conference, 21 May 2015, English
[International presentation] - Short-term and Long-term Effects of spraying phosphoric acid wastewater on pressure drop of fabric filter in solid waste incinerator
Shigetoshi Takahashi, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto
The 2nd 3R International Scientific Conference, 21 May 2015, English
[International presentation] - Effect of Spraying Phosphoric Acid Containing Wastewater to Incinerator on Decrease of Pressure Loss in Fabric Filter
In-Hee Hwang, Shigetoshi Takahashi, Toshihiko Matsuto, Takayuki Matsuo, Yoshitada Kakuta
The 2nd Symposium of Asian Regional Branch of International Waste Working Group, 12 Apr. 2015, English, Oral presentation
[International presentation] - Study of the dry removal mechanism of acid gases in waste incineration flue gas by lab test
木下 亮, 黄 仁姫, 松藤 敏彦, 松尾 孝之, 鮫島 良二
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2015, Japan Society of Material Cycles and Waste Management
2015 - 2015, 焼却施設における消石灰を用いた酸性ガスの除去反応は、一般的な化学反応とは異なり高温ほど高効率となるが、その理由は明確になっていない。また、HCl と消石灰の反応生成物はCaCl2であると考えられてきたが、近年の研究では中間生成物のCaClOHが確認されている。本研究では酸性ガスと消石灰の反 応機構と生成物の化合物形態を定性的・定量的に調べた。反応を模擬した平衡計算では、高温ほどCO２と消石灰が反応し、酸性ガスの除去反応が阻害された。 またラボ試験を行い、温度、水分、当量比と反応生成物量の関係を調べた。水分添加を行った条件では、低温域で酸性ガスの除去率が向上したが、温度と除去率 に負の相関は確認されなかった。また、CO2による明確な反応の阻害は確認されなかった。消石灰の使用量が多いほどHCl除去効率は向上したが、生成物の 大部分は中間生成物として存在し、消石灰を有効利用できていない可能性が示唆された。 - 埋立工法が中間処理残さ主体埋立地の安定化に及ぼす影響
田村 和樹, 東條 安匡, 松尾 孝之, 黄 仁姫, 松藤 敏彦
第22回衛生工学シンポジウム, 21 Nov. 2014, Japanese
[Domestic Conference] - Study on reduction of pressure drop in fabric filter by spraying phosphoric acid at incinerator
Shigetoshi Takahashi, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto, Masaharu Ohue, Yoshitada Kakuta
8th i-CIPEC, 15 Oct. 2014, English, Oral presentation
15 Oct. 2014 - 18 Oct. 2014, [International presentation] - リン酸吹込みによるごみ焼却施設バグフィルター差圧低減とリンの存在形態に関する研究
黄 仁姫, 向山 和晃, 松尾 孝之, 松藤 敏彦, 大上 雅彦, 角田 芳忠
第25回廃棄物学会研究発表会, 15 Sep. 2014, Japanese
[Domestic Conference] - ごみ焼却施設におけるリン酸噴霧によるバグフィルター差圧低減に関する研究
髙橋 滋敏, 黄 仁姫, 松尾 孝之, 松藤 敏彦, 大上 雅晴, 角田 芳忠
第25回廃棄物学会研究発表会, 15 Sep. 2014, Japanese
[Domestic Conference] - Decrease of Pressure Loss in Fabric Filter of Flue Gas Treatment System by Incineration of Phosphoric Acid Wastewater
In-Hee Hwang, Shigetoshi Takahashi, Kazuaki Mukaiyama, Takayuki Matsuo, Toshihiko Matsuto, Masaharu Ohue, Masaya Tanaka, Yoshitada Kakuta
The 5th China-Japan Joint Conference, English
14 Jul. 2014 - 16 Jul. 2014, [International presentation] - リン酸吹込みによるごみ焼却施設バグフィルター差圧低下とリンの存在形態の影響
向山和晃, 黄仁姫, 高橋滋敏, 松尾孝之, 松藤敏彦, 大上雅彦, 田中真弥, 角田芳忠
平成26年度廃棄物資源循環学会春の研究発表会（川崎）, 29 May 2014, Japanese
[Domestic Conference] - ごみ焼却施設におけるバグフィルター差圧のリン酸吹込みによる低下原因
高橋滋敏, 黄仁姫, 向山和晃, 松尾孝之, 松藤敏彦, 大上雅彦, 田中真弥, 角田芳忠
平成26年度廃棄物資源循環学会春の研究発表会（川崎）, 29 May 2014, Japanese
[Domestic Conference] - Effect of phosphoric acid wastewater incineration on the decrease of pressure loss in fabric filter of flue gas treatment system
In-Hee Hwang, Shigetoshi Takahashi, Kazuaki Mukaiyama, Takayuki Matsuo, Toshihiko Matsuto, Masaharu Ohue, Masaya Tanaka, Yoshitada Kakuta
18th Korea-Japan Joint International Session, 15 May 2014, English
[International presentation] - Estimation of phosphorus compound formed by spraying phosphoric acid to solid waste incinerator and its effect on pressure loss of bag filter
Kazuaki Mukaiyama, In-Hee Hwang, Shigetoshi Takahashi, Toshihiko Matsuto, Takayuki Matsuo, Yasumasa
18th Korea-Japan Joint International Session, The 2014 Spring Conference of the Korea Society of Waste Management, 15 May 2014, English
[International presentation] - Influence of landfilling works on the stabilization of inorganic waste residue in landfill
Kazuki Tamura, Yasumasa Tojo, Takayuki Matsuo, In-Hee Hwang, Toshihiko Matsuto
18th Korea-Japan Joint International Session, The 2014 Spring Conference of the Korea Society of Waste Management, 15 May 2014, English
[International presentation] - Current situation of scallop entrails recycling and hydrothermal treatment for recovery of liquid fertilizerfrom scallop entrails
In-Hee Hwang, Hiroya Aoyama, Natsuki Abe, Toshihiko Matsuto, Takayuki Matsuo, Tojo Yasumasa
3RINCs and SWAPI 2014, 10 Mar. 2014, English
[International presentation] - Study on reduction in bag filter pressure drop by spraying phosphoric acid at incinerator
TAKAHASHI Shigetoshi, HWANG In-Hee, MATSUO Takayuki, MATSUTOU Toshihiko, OHUE Masaharu, KAKUTA Yoshitada
Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management, 2014, Japan Society of Material Cycles and Waste Management
2014 - 2014, ごみ焼却施設において，大気汚染物質排出低減のために排ガス処理が行われている。そのうちバグフィルター（BF）は高いばいじん除去率のため広く使われている。しかしBFでの圧力損失（BF差圧）は，圧力損失全体の半分以上を占め，エネルギー消費やコストの増加につながっている。ある産業廃棄物処理施設において，処理物として受け入れたリン酸廃液を焼却炉内に噴霧した際に，BF差圧が低下したと報告があった。そこでリン酸廃液噴霧によるBF差圧低下原因の仮説を立て，実機試験を行った。その結果，リン酸廃液噴霧によってBFに流入するダストが増加しBFにリンが蓄積する一方で，BF差圧が低下することが確認された。またサンプリングしたBF落下灰の粒度分布を調べた結果，リン酸廃液噴霧中のものは噴霧前のものと比べ粒径が大きくなったことが分かった。従ってリン酸廃液噴霧によるダストの大粒径化が，BF差圧低下原因であることが示された。 - 金属化合物を添加した活性白土によるごみ焼却排ガス中有機塩素化合物の脱塩素化
黄 仁姫, 金森 敦, 高橋 滋敏, 松尾 孝之, 松藤 敏彦, 東條 安匡
第24回廃棄物学会研究発表会, 02 Nov. 2013, Japanese
[Domestic Conference] - 風化促進試験による焼却主灰の風化変質がセシウムの挙動に与える影響
東條 安匡, 岩本 早織, 松尾 孝之, 松藤 敏彦, 黄 仁姫, 島岡 隆行
第24回廃棄物学会研究発表会, 02 Nov. 2013, Japanese
[Domestic Conference] - 焼却主灰中セシウムの存在形態と溶出挙動に関する研究
木下 亮, 東條 安匡, 松尾 孝之, 黄 仁姫, 松藤 敏彦, 島岡 隆行
第24回廃棄物学会研究発表会, 02 Nov. 2013, Japanese
[Domestic Conference] - 焼却灰の固結が重金属類の放出に与える影響
野村 弘, 東條 安匡, 松尾 孝之, 黄 仁姫, 松藤 敏彦
第24回廃棄物学会研究発表会, 02 Nov. 2013, Japanese
[Domestic Conference] - Dechlorination of organochlorine compound in flue gas from municipal solid waste incinerator using metal compound added activated clay
In-Hee Hwang, Atsushi Kanamori, Shigetoshi Takahashi, Takayuki Matsuo, Yasumasa Tojo, Toshihiko Matsuto, Masaharu Ohue, Yoshitada Kakuta
17th Korea-Japan Joint International Session, The 2013 Spring Conference of the Korea Society of Waste Management, 08 May 2013, English
[International presentation] - Influence of bottom ash solidification on leaching behavior of heavy metals
Hiroshi Nomura, Yasumasa Tojo, Takayuki Matsuo, In-Hee Hwang, Toshihiko Matsuto
17th Korea-Japan Joint International Session, The 2013 Spring Conference of the Korea Society of Waste Management, 08 May 2013, English
[International presentation] - Study on chemical form and leaching behavior of cesium contained in incineration bottom ash
Ryo Kinoshita, Yasumasa Tojo, Takayuki Matsuo, In-Hee Hwang, Toshihiko Matsuto
17th Korea-Japan Joint International Session, The 2013 Spring Conference of the Korea Society of Waste Management, 08 May 2013, English
[International presentation] - Dechlorination of mono-chlorobenzene in flue gas of municipal solid waste incinerator using activated clay
Shigetoshi Takahashi, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto, Yasumasa Tojo
The 12th Expert Meeting on Solid Waste Management in Asia and Pacific Islands (SWAPI), 26 Feb. 2013, English
[International presentation] - 廃棄物埋立地における多環芳香族炭化水素の好気性微生物分解に関する研究
長谷川健太, 東條安匡, 松藤敏彦, 松尾孝之, 黄仁姫
第20回衛生工学シンポジウム, 04 Dec. 2012, Japanese
[Domestic Conference] - 埋立地における焼却灰固結機構の解明および洗い出し効果に与える影響
石井三香子, 東條安匡, 松尾孝之, 黄仁姫, 松藤敏彦
第20回衛生工学シンポジウム, 04 Dec. 2012, Japanese
[Domestic Conference] - 戻し堆肥を行う生ごみ堆肥化施設の処理特性と運転改善に関する研究
西俊輔, 黄仁姫, 松藤敏彦, 松尾孝之, 東條安匡
第20回衛生工学シンポジウム, 04 Dec. 2012, Japanese
[Domestic Conference] - 活性白土を用いたごみ焼却排ガス中クロロベンゼンの脱塩素効果に関する研究
高橋滋敏, 黄仁姫, 松尾孝之, 松藤敏彦, 東條安匡
第20回衛生工学シンポジウム, 04 Dec. 2012, Japanese
[Domestic Conference] - Current problem of scallop waste recyling and feability of hydrothermal treatment for recovery of liquid fertilizer from scallop wastes
I.-H. Hwang, H. Aoyama, T. Matsuto, T. Matsuo
Venice2012, 12 Nov. 2012, English, Oral presentation
[International presentation] - Feasibility of hydrothermal treatment for recovery of liquid fertilizer from scallop entrails
In-Hee Hwang, Hiroya Aoyama, Takayuki Matsuo, Toshihiko Matsuto, Yasumasa Tojo
Proc. Of the 23rd Annual Conference of Japan Society of Material Cycles and Waste Management, English, Poster presentation
22 Oct. 2012, [International presentation] - 活性白土を用いたごみ焼却排ガス中クロロベンゼンの脱塩素効果に関する研究
高橋 滋敏, 黄 仁姫, 松尾 孝之, 松藤 敏彦, 東條 安匡
第23回廃棄物学会研究発表会, 22 Oct. 2012, Japanese
[Domestic Conference] - ホタテ内臓処理の現状および亜臨界水熱処理によるホタテ内臓からの液肥回収可能性の検討
黄 仁姫, 青山 普哉, 松藤 敏彦, 東條 安匡, 松尾 孝之
平成24年度廃棄物資源循環学会研究討論会（川崎）, 31 May 2012, Japanese
[Domestic Conference] - 建設混合廃棄物破砕選別施設における篩下残渣の安定型処分または資源利用可能性の検討
東條 安匡, 安藤 泰明, 松尾 孝之, 松藤 敏彦, 黄 仁姫
平成24年度廃棄物資源循環学会研究討論会（川崎）, 31 May 2012, Japanese
[Domestic Conference] - Aerobic biodegradation of polycyclic aromatic hydrocarbons in landfill
Kenta Hasegawa, Yasumasa Tojo, Toshihiko Matsuto, Takayuki Matsuo, Hwang In-Hee
16th Korea-Japan Joint International Session, The 2012 Spring Conference of the Korea Society of Waste Management, 10 May 2012, English
[International presentation] - Dechlorination of mono-chlorobenzene in flue gas of municipal solid waste incinerator using activated clay
Shigetoshi Takahashi, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto
16th Korea-Japan Joint International Session, The 2012 Spring Conference of the Korea Society of Waste Management, 10 May 2012, English
[International presentation] - Characteristics and operation improvement of food waste composting facility performing compost-return and air recirculation
Shunsuke Nishi, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto
16th Korea-Japan Joint International Session, The 2012 Spring Conference of the Korea Society of Waste Management, 10 May 2012, English
[International presentation] - Investigation on the solidification process of MSW bottom ash and their effect on the washout
Mikako Ishii, Yasumasa Tojo, Takayuki Matsuo, Hwang In-Hee, Toshihiko Matsuto
16th Korea-Japan Joint International Session, The 2012 Spring Conference of the Korea Society of Waste Management, 10 May 2012, English
[International presentation] - 建設混合廃棄物破砕選別残渣中の生物分解性有機炭素の分画と硫化水素生成能
東條 安匡, 齋藤 隆生, 松尾 孝之, 黄 仁姫, 松藤 敏彦
第22回廃棄物学会研究発表会, 03 Nov. 2011, Japanese - 亜臨界水熱処理によるホタテ内蔵からの液肥回収に関する研究
黄 仁姫, 阿部 夏季, 松藤 敏彦, 東條 安匡, 松尾 孝之
第22回廃棄物学会研究発表会, 03 Nov. 2011, Japanese
[Domestic Conference] - Subcritical Water Hydrothermal Treatment of Scallop Waste to Produce Liquid Fertilizer
In-Hee Hwang, Natsuki Abe, Takayuki Matsuo, Toshihiko Matsuto
ISWA2011 World Congress of International Solid Waste Association, 17 Oct. 2011, English
[International presentation] - ごみ焼却排ガスの触媒脱硝における尿素還元剤利用に関する研究
黄仁姫, 対馬 幸太郎, 松藤 敏彦, 松尾 孝之, 鮫島 良二
平成23年度廃棄物資源循環学会研究討論会（川崎）, 31 May 2011, Japanese
[Domestic Conference] - 硫化水素生成に寄与する建設混合廃棄物破砕選別残渣中の生物分解性有機物の定量
東條 安匡, 松尾 孝之, 黄 仁姫, 松藤 敏彦
平成23年度廃棄物資源循環学会研究討論会（川崎）, 31 May 2011, Japanese
[Domestic Conference] - Utilization of urea as NOX reducing agent for selective catalytic reduction process in flue gas treatment system of municipal solid waste incinerator
In-Hee Hwang, Tsushima Koutaro, Takayuki Matsuo, Toshihiko Matsuto
15th Korea-Japan Joint International Session, The 2011 Spring Conference of the Korea Society of Waste Management, May 2011, English
[International presentation] - Recovery of liquid fertilizer from scallop waste by hydrothermal treatment using subcritical water
Natsuki Abe, In-Hee Hwang, Takayuki Matsuo, Toshihiko Matsuto
15th Korea-Japan Joint International Session, The 2011 Spring Conference of the Korea Society of Waste Management, May 2011, English
[International presentation] - Analysis of composting facility performing air recirculation and compost reutilization as bulking material
Takashi Matsuura, In-Hee Hwang, Toshihiko Matsuto, Takayuki Matsuo, Huijun Zhang
15th Korea-Japan Joint International Session, The 2011 Spring Conference of the Korea Society of Waste Management, May 2011, English
[International presentation] - Recovery of solid fuel from municipal solid waste using hydrothermal treatment
In-Hee Hwang, T. Matsuto, H. Aoyama, T. Nakagishi, T. Matsuo
VENICE2010, English
08 Nov. 2010 - 11 Nov. 2010, [International presentation] - 都市ごみ焼却排ガス中水銀の乾式除去に関する研究
美濃谷広, 黄仁姫, 松藤敏彦, 松尾孝之
第21回廃棄物学会研究発表会, 04 Nov. 2010, Japanese
[Domestic Conference] - 都市ごみ炭化物からの塩素除去を目的とした塩素の存在形態の把握
西本薫, 黄仁姫, 松藤敏彦, 松尾孝之, 上野俊一郎, 柴田 卓
第21回廃棄物学会研究発表会, 04 Nov. 2010, Japanese
[Domestic Conference] - 都市ごみの水熱処理による固形燃料化に関する研究
黄仁姫, 青山普哉, 仲岸達紘, 松藤敏彦, 松尾孝之
第21回廃棄物学会研究発表会, 04 Nov. 2010, Japanese
[Domestic Conference] - ごみ焼却排ガス中水銀の乾式除去に関する研究
黄仁姫, 美濃谷広, 松藤敏彦, 松尾孝之
平成22年度廃棄物資源循環学会研究討論会（川崎）, 20 May 2010, Japanese
[Domestic Conference] - Fundamental study on hydrothermal treatment of municipal solid wastes for solid fuel recovery
Hiroya Aoyama, In-Hee Hwang, Tatsuhiro Nakagishi, Takayuki Matsuo, Toshihiko Matsuto
14th Korea-Japan Joint International Session, The 2010 Spring Conference of the Korea Society of Waste Management, May 2010, English
[International presentation] - Characteristics of products obtained from biomass and plastic wastes in the condition of pyrolysis and gasification
In-Hee Hwang, Jun Kobayashi, Katsuya Kawamoto, Toshihiko Mastuto
14th Korea-Japan Joint International Session, The 2010 Spring Conference of the Korea Society of Waste Management, May 2010, English
[International presentation] - Survey on current operating state of MSW carbonization facilities in Japan
NAKAYAMA Shingo, HWANG In-Hee, KAWAMOTO Katsuya
廃棄物資源循環学会研究発表会(CD-ROM), 2009
2009 - 2009 - 無触媒脱硝法+BF方式における塩化アンモニウム生成・除去に関する研究
黄 仁姫, 美濃谷 広, 松藤 敏彦
廃棄物学会研究発表会講演論文集, 19 Nov. 2008, 廃棄物学会, Japanese
19 Nov. 2008 - 19 Nov. 2008 - Formation and removal of ammonia chloride in flue gas from municipal solid waste incinerators
Hiroshi Minoya, In-Hee Hwang, Toshihiko Matsuto, Takayuki Matsuo
The 2008 Spring Conference of the Korea Society of Waste Management, May 2008, English
[International presentation] - 無触媒脱硝法+BF 方式における塩化アンモニウム生成・除去に関する研究
黄 仁姫, 美濃谷 広, 松藤 敏彦, 松尾 孝之
第19回廃棄物学会研究発表会, 2008, Japanese
[Domestic Conference] - Pretreatment of automobile shredder risidue (ASR) for fuel recovery
I. Hwang, S. Yokono, T. Matsuto
The 2007 Environmental Societies Joint Conference, May 2007, English
[International presentation] - 廃棄物由来炭化物の灰分除去と存在形態に関する研究
中島 大輔, 黄 仁姫, 松藤 敏彦
廃棄物学会研究発表会講演論文集, 20 Nov. 2006, 廃棄物学会, Japanese
20 Nov. 2006 - 20 Nov. 2006 - Quality Improvement of Waste Derived Char using Mineral Processing Techniques
I.H. Hwang, T. Matsuto, D. Nakajima
４th International Conference on Combustion, Incineration/Pyrolysis and Emission Control, 26 Sep. 2006, English
[International presentation] - Comparison of environmental loads depending on three different pretreatment methods before landfill
I.H.Hwang, T.Matsuto, Y.Ouchi
Proc. Of the 4th Intercontinental Landfill Research Symposium, 14 Jun. 2006, English
[International presentation] - Evaluation of carbonization residue derived from municipal solid waste and industrial waste from a view of resource recovery and pretreatment for landfill
I.H. Hwang, T. Matsuto, T. Tanaka
SARDINIA2005, English, Poster presentation
03 Oct. 2005 - 07 Oct. 2005, [International presentation] - Improvement of char in quality by chlorine removal and ash separation
In-Hee Hwang, Toshihiko Matsuto, Nobutoshi Tanaka, Yamasuma Tojo
The 2005 Spring Conference of the Korea Society of Waste Management, 12 May 2005, English, Poster presentation
[International presentation] - 都市ごみ炭化物中塩素の水溶性に関する研究
黄 仁姫, 松藤敏彦, 田中信壽
第15回廃棄物学会研究発表会, Nov. 2004, Japanese
[Domestic Conference] - 都市ごみ炭化物中塩素の水溶性に関する研究
黄 仁姫, 松藤 敏彦, 田中 信壽
衛生工学シンポジウム論文集, 31 Oct. 2004, 北海道大学衛生工学会, Japanese
31 Oct. 2004 - 31 Oct. 2004
Affiliated academic society
Research Themes
- Carbon recycling and carbon sequestration by the hydrothermal carbonization of waste biomass
Grants-in-Aid for Scientific Research
01 Apr. 2024 - 31 Mar. 2027
黄 仁姫
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 24K07724 - Elucidation of NOx reduction mechanism in vertical stoker type incinerator and its application for NOx removal from solid waste incineration flue gas
Grants-in-Aid for Scientific Research
Apr. 2018 - Mar. 2022
Hwang In-Hee
Vertical stocker type incinerator is a novel incinerator which performs efficient incineration with forming drying, pyrolysis, and combustion zones vertically in the waste layer. However, the operation experience of vertical stocker type incinerator is not long so its characteristics are not well-known. In this study, we focused on the self-denitrification reaction of NOX in the reducing atmosphere of the waste layer from the viewpoint of NOX removal in the exhaust gas in the vertical stoker type incinerator. The generation characteristics of NOX, HCN, and NH3 in the waste layer and the effects of oxygen concentration, temperature, coexisting combustible gases, etc. on the oxidation or reduction of HCN and NH3 in combustion chamber were clarified by the gas concentration measurement in an operating vertical stocker type incinerator, lab-scale experiments, and combustion simulation.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 18K11689 - ごみ焼却排ガス処理を目的とした重曹の真空加熱による多孔 質薬剤の開発
廃棄物の適正処理・水処理に係る調査研究助成制度
Jun. 2021 - Feb. 2022
黄 仁姫
大阪湾広域臨海環境整備センター, 北海道大学, 030006 - Evaluation of Integrated waste management system based on MBT concept for municipal solid waste
Grants-in-Aid for Scientific Research
Apr. 2017 - Mar. 2020
Matsuto Toshihiko
MBT is a combination of mechanical, biological, and thermal process as an integrated system. Two MBT systems were studied: combined system of Anaerobic Digestion (AD) and incineration, and Biodrying MBT which is followed by mechanical separation to recover solid fuel. Field study was conducted in real-scale facility, where solid waste and output material were sampled, and material balance and energy balance were clarified. Lab-experiment of biodrying was also carried out to construct moisture removal model. By taking two other system, incineration and RDF production system, four systems were evaluated in terms of energy recovery and CO2 emission. By using data obtained in our study and from literature review, material flow were drawn, and energy balance was estimated. Finally, sensitivity analysis of main parameters was carried out to find factors which should be improved for higher energy recovery rate.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, Coinvestigator, 17H01917 - ごみ焼却排ガスの中和処理用消石灰の高効率利用に関する研究
基盤研究(C)
Apr. 2015 - Mar. 2018
黄 仁姫
文部科学省, Principal investigator, Competitive research funding - 一般廃棄物焼却施設の物質収支・エネルギー消費・コスト算出モデルの作成
循環型社会形成推進科学研究費補助金
Apr. 2010 - Mar. 2012
松藤敏彦
環境省, 北海道大学, Coinvestigator, K2323 - 亜臨界水熱処理による生物系水産廃棄物からの液肥抽出に関する研究
平成23年度廃棄物・海域水環境保全に係る調査研究費助成
Apr. 2010 - Mar. 2012
黄 仁姫
大阪湾広域臨海環境整備センター, Principal investigator, Competitive research funding - 新規女性研究者研究費
女性研究者養成システム改革加速
Oct. 2009 - Dec. 2011
独立行政法人科学技術振興機構, Competitive research funding
