研究者基本情報

• 博士（工学）, 北海道大学, 2019年03月

• https://researchmap.jp/ihp

• 201901001106560155

• Environmental Remediation
• Resources Recycling
• Extractive Metallurgy
• Mineral Processing

• その他, その他

• 学士課程, 工学部
• 修士課程, 工学院
• 博士課程, 工学院

研究活動情報

• 2024年02月, 北海道大学, 教育研究総長表彰
  Ilhwan Park
• 2023年03月, 一般社団法人資源・素材学会, 論文賞
  Kinetic Analysis for Agglomeration-Flotation of Finely Ground Chalcopyrite: Comparison of First Order Kinetic Model and Experimental Results
  Vothy Hornn;Mayumi Ito;Ryosuke Yamazawa;Hiromasa Shimada;Carlito Baltazar Tabelin;Sanghee Jeon;Ilhwan Park;Naoki Hiroyoshi, 29314731
• 2022年03月, 北海道大学 大学院工学研究院, 若手教員奨励賞
  Ilhwan Park
• 2018年, 17th Global Joint Seminar on Geo-Environmental Engineering, Japan, Best Presentation Award (2nd place)
  Suppression of the release of arsenic from arsenopyrite by titanium- and aluminum-based carrier-microencapsulation
  パク イルファン
• 2017年, 1st International KAMPAI Symposium, Japan, Best Presentation Award
  uppressive effects of aluminum-catechol complexes on the release of arsenic from arsenopyrite
  パク イルファン
• 2017年, The Mining and Materials Processing Institute of Japan (MMIJ), Japan, MMIJ Young Poster Award
  Carrier-microencapsulation using Al-catechol complex for suppressing arsenic release from arsenopyrite
  パク イルファン
• 2016年, 5th International Doctoral Symposium, Japan, Best Presentation Award
  The Influence of Aluminum-Catechol Complexes on the Suppression of Arsenopyrite Oxidation
  パク イルファン
• 2016年, 9th AUN/SEED-Net Regional Conference on Geological and Geo-resources Engineering, Thailand, Best Presentation Award
  Suppression of Arsenopyrite Oxidation by Carrier Microencapsulation using Titanium-Catechol Complex
  パク イルファン
• 2015年, The Korean Institute of Metals and Materials, Korea, Best Poster Presentation Award
  The Leaching Behavior of Cuprous Oxide Powder in Sulfuric Acid
  パク イルファン
• 2014年02月, The Korean Institute of Resources Recycling, Korea, The President's Award
  パク イルファン
• 2013年12月, Federation of Busan Science and Technology, Korea, Busan Future Scientist Award (3rd place)
  The Selective Leaching of Nd from Waste Magnet using Mechanochemical Decomposition
  パク イルファン

• The Conservation of Architectural Heritage Structures Built with Tuff and Coral Rock: A Systematic Review and Bibliometric Analysis of Geopolymer Formulation, Application, Compatibility and Durability
  Kent Benedict Aleonar Salisid; Raul Lucero, Jr.; Reymarvelos Oros; Mylah Villacorte-Tabelin; Theerayut Phengsaart; Shengguo Xue; Jiaqing Zeng; Ivy Corazon A. Mangaya-ay; Takahiko Arima; Ilhwan Park; Mayumi Ito; Sanghee Jeon; Carlito Baltazar Tabelin
  Minerals, 2026年04月20日
  研究論文（学術雑誌）
• Toward Achieving a Carbon-Neutral Society: Beneficiation and Extractive Metallurgy for Producing Critical Metals from Ores/Wastes
  Ilhwan Park; Sanghee Jeon
  Metals, 2026年01月19日
  研究論文（学術雑誌）
• SYNERGISTIC EFFECTS OF DOLOMITE, TALC, AND CHICKEN EGGSHELL ADDITIVES ON CHAR FORMATION AND THERMAL STABILITY OF APP–MEL–EG INTUMESCENT COATING SYSTEM FOR STEEL PROTECTION
  Edrhea Villas; Gevelyn Itao; Vannie Joy Resabal; Carlito Baltazar Tabelin; Takahiko Arima; Mayumi Ito; Naoki Hiroyoshi; Yogarajah Elakneswaran; Mylah Villacorte-Tabelin; Jaypee Yongco; michelle jeanne caracut; Arnold A. Lubguban; Joshua B. Zoleta
  2026年
• Repurposing of scrap aluminum for aluminum-iron bimetallic material synthesis and its application for metal recovery from simulated acid mine drainage
  Dayle Tranz Daño; Carlito Baltazar Tabelin; Takahiko Arima; Mayumi Ito; Naoki Hiroyoshi; Mylah Villacorte-Tabelin; Joshua B. Zoleta; Theerayut Phengsaart; Aileen H. Orbecido; Arnel Beltran; Michael Promentilla; Ronben Baute; Charmaine Garridos; Vannie Joy Resabal
  2026年
• Heavy Metal Pollution Assessment and Survey of Rhizosphere Bacterial Communities from Saccharum spontaneum L. in a Rehabilitated Nickel-Laterite Mine in the Philippines
  Shiela W. Mainit; Carlito Baltazar Tabelin; Florifern C. Paglinawan; Jaime Q. Guihawan; Alissa Jane S. Mondejar; Vannie Joy T. Resabal; Maria Reina Suzette B. Madamba; Dennis Alonzo; Aileen H. Orbecido; Michael Angelo Promentilla; Joshua B. Zoleta; Dayle Tranz Daño; Ilhwan Park; Mayumi Ito; Takahiko Arima; Theerayut Phengsaart; Mylah Villacorte-Tabelin
  Minerals, 2025年08月
  研究論文（学術雑誌）
• Recovery of Fine Rare Earth Minerals from Simulated Tin Tailings by Carrier Magnetic Separation: Selective Heterogeneous Agglomeration with Coarse Magnetite Particles
  Ilhwan Park; Topan Satria Gumilang; Rinaldi Yudha Pratama; Sanghee Jeon; Carlito Baltazar Tabelin; Theerayut Phengsaart; Muhammad Bilal; Youhei Kawamura; Mayumi Ito
  Minerals, 2025年07月19日
  研究論文（学術雑誌）
• Synthesis of Iron-Based and Aluminum-Based Bimetals: A Systematic Review
  Jeffrey Ken B. Balangao; Carlito Baltazar Tabelin; Theerayut Phengsaart; Joshua B. Zoleta; Takahiko Arima; Ilhwan Park; Walubita Mufalo; Mayumi Ito; Richard D. Alorro; Aileen H. Orbecido; Arnel B. Beltran; Michael Angelo B. Promentilla; Sanghee Jeon; Kazutoshi Haga; Vannie Joy T. Resabal
  Metals, 2025年05月27日
  研究論文（学術雑誌）
• Effects of Salinity Level on Microplastic Removal in Simulated Waters Using Agglomeration–Micro-Flotation
  Theerayut Phengsaart; Palot Srichonphaisarn; Worada Khwathichak; Chanatip Bumrungsak; Ilhwan Park; Mayumi Ito; Mylah Villacorte-Tabelin; Carlito Baltazar Tabelin; Sanghee Jeon; Kazutoshi Haga; Onchanok Juntarasakul
  Water, 2025年04月23日
  研究論文（学術雑誌）
• Application of Surface-Modified Natural Magnetite as a Magnetic Carrier for Microplastic Removal from Water
  Palot Srichonphaisarn; Natatsawas Soonthornwiphat; Pongsiri Julapong; Thanakornkan Limlertchareonwanit; Thidarat Meekoch; Ilhwan Park; Mylah Villacorte-Tabelin; Onchanok Juntarasakul; Somsak Saisinchai; Carlito Baltazar Tabelin; Theerayut Phengsaart
  Minerals, 2025年04月18日
  研究論文（学術雑誌）
• APiS (AI powered intelligence spectrum analyser): hyperspectral imaging machine learning analyser app for mineral processing
  Natsuo Okada; Narihiro Owada; Kaito Takizawa; Brian Bino Sinaice; Okhala Muacanhia; Angesom Gebretsadik; Shunki Tanaka; Kosei Aikawa; Ilhwan Park; Mayumi Ito; Yoko Ohtomo; Youhei Kawamura
  International Journal of Mining, Reclamation and Environment, 1, 27, Informa UK Limited, 2024年10月02日
  研究論文（学術雑誌）
• Microencapsulation-based surface modification for improving flotation separation of Cu-Zn mixed sulfide minerals
  Ilhwan Park; Dai Uchida; Sanghee Jeon; Kosei Aikawa; Naoki Hiroyoshi; Mayumi Ito
  Minerals Engineering, 213, 108756, 108756, Elsevier BV, 2024年08月
  研究論文（学術雑誌）
• Role of Semiconductive Property on Selective Cementation Mechanism of Iron Oxides to Gold in Galvanic Interaction with Zero-Valent Aluminum from Gold–Copper Ammoniacal Thiosulfate Solutions
  Joshua Zoleta; Kosei Aikawa; Nako Okada; Ilhwan Park; Mayumi Ito; Yogarajah Elakneswaran; Naoki Hiroyoshi
  Metals, 14, 5, 550, 550, MDPI AG, 2024年05月07日
  研究論文（学術雑誌）, Iron oxides (hematite, Fe2O3, and magnetite, Fe3O4), previously used as electron mediators in the galvanic system with zero-valent aluminum (ZVAl), have been shown to recover Au upon cementation in Au–Cu ammoniacal thiosulfate media selectively, and this warrants further investigation. This research is focused on investigating the role of the semiconductive properties of metal oxides by performing a cementation experiment by mixing 0.15 g of electron mediators (Fe3O4, Fe2O3, TiO2 (anatase and rutile)) and 0.15 g of zero-valent aluminum powder as an electron donor in various electrochemical experiments. The results revealed that upon the cementation experiment, synthetic Fe2O3 and Fe3O4 were consistently able to selectively recover Au at around 90% and Cu at around 20%. Compared to activated carbon (AC), TiO2, in anatase and rutile forms, obtained selective recovery of gold, but the recovery was utterly insignificant compared to that of iron oxides, obtaining an average of 93% Au and 63% Cu recovery. The electrochemical and surface analysis supports the results obtained upon the cementation process, where TiO2, upon cyclic voltammetry (CV), obtained two reduction peaks centered at −1.0 V and −0.5 V assigned to reducing Au and Cu ions, respectively. Furthermore, various electrochemical impedance spectroscopic analyses revealed that the flat band potential obtained in the Mott–Schottky plot is around −1.0 V and −0.2 V for iron oxides and titanium oxides, respectively, suggesting that the electrons travel from semiconductor interface to electrolyte interface, and electrons are accessible only to Au ions in the electrolyte interface (reduction band edge around −1.0 V). The determination of this selective cementation mechanism is one of a kind. It has been proposed that the semiconductive properties of Fe2O3, Fe3O4, and, by configuring their relative energy band diagram, the travel of electrons from the iron oxide–electrolyte interface facilitate the selective cementation towards Au(S2O3)23+ ions in gold–copper ammoniacal thiosulfate solutions.
• Isolation and Characterization of Indigenous Ureolytic Bacteria from Mindanao, Philippines: Prospects for Microbially Induced Carbonate Precipitation (MICP)
  Kryzzyl M. Maulas; Charla S. Paredes; Carlito Baltazar Tabelin; Mark Anthony Jose; Einstine M. Opiso; Takahiko Arima; Ilhwan Park; Walubita Mufalo; Mayumi Ito; Toshifumi Igarashi; Theerayut Phengsaart; Edrhea Villas; Sheila L. Dagondon; Ephrime B. Metillo; Mylene M. Uy; Al James A. Manua; Mylah Villacorte-Tabelin
  Minerals, 14, 4, 339, 339, MDPI AG, 2024年03月26日
  研究論文（学術雑誌）, Microbially induced carbonate precipitation (MICP), a widespread phenomenon in nature, is gaining attention as a low-carbon alternative to ordinary Portland cement (OPC) in geotechnical engineering and the construction industry for sustainable development. In the Philippines, however, very few works have been conducted to isolate and identify indigenous, urease-producing (ureolytic) bacteria suitable for MICP. In this study, we isolated seven, ureolytic and potentially useful bacteria for MICP from marine sediments in Iligan City. DNA barcoding using 16s rDNA identified six of them as Pseudomonas stutzeri, Pseudomonas pseudoalcaligenes, Bacillus paralicheniformis, Bacillus altitudinis, Bacillus aryabhattai, and Stutzerimonas stutzeri but the seventh was not identified since it was a bacterial consortium. Bio-cementation assay experiments showed negligible precipitation in the control (without bacteria) at pH 7, 8, and 9. However, precipitates were formed in all seven bacterial isolates, especially between pH 7 and 8 (0.7–4 g). Among the six identified bacterial species, more extensive precipitation (2.3–4 g) and higher final pH were observed in S. stutzeri, and B. aryabhattai, which indicate better urease production and decomposition, higher CO2 generation, and more favorable CaCO3 formation. Characterization of the precipitates by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS) and attenuated total reflectance Fourier transform spectroscopy (ATR-FTIR) confirmed the formation of three carbonate minerals: calcite, aragonite, and vaterite. Based on these results, all six identified indigenous, ureolytic bacterial species from Iligan City are suitable for MICP provided that the pH is controlled between 7 and 8. To the best of our knowledge, this is the first report of the urease-producing ability and potential for MICP of P. stutzeri, P. pseudoalcaligenes, S. stutzeri, and B. aryabhattai.
• A Mixed Media Approach Using Locally Available Neutralizing Materials for the Passive Treatment of Acid Mine Drainage
  Joshua Pascual Pocaan; Casey Oliver A. Turingan; Carlito Baltazar Tabelin; Joshua B. Zoleta; Takahiko Arima; Ilhwan Park; Mayumi Ito; Aileen H. Orbecido
  Research Square Platform LLC, 2024年01月05日
  Abstract
  
  Acid mine drainage (AMD)—the strongly acidic and highly polluted effluents from mine sites—are generally managed via active or passive treatment. Active treatment strategies are effective but requires continuous input of energy, chemicals and manpower making them unsustainable in the long term. Because of this, passive treatment is explored as a more sustainable alternative especially for abandoned and legacy mines. Recent studies of the authors have explored the use limestone and waste materials like low-grade ores (LGO), fly ash (FA), and concrete wastes for AMD treatment and found that although these materials generated alkalinity individually, they could only partially remove sulfate (SO₄²⁻) and some heavy metals. To address this limitation, a mixed media approach using these four materials is proposed to neutralize the pH of AMD and maximize heavy metals (Cu, Fe, Mn, Ni, and Al) and SO₄²⁻ removal. A total of twenty (20) mixtures of the four materials were identified based on the response surface methodology (RSM) experimental design. Laboratory-scale experiments using simulated AMD were performed to assess the performance of each mixture by monitoring the pH, oxidation-reduction potential (Eh), electrical conductivity (EC), metal concentrations, and SO₄²⁻ concentration. Based on the results, three optimized mixed media compositions were identified in wt%: (i) 43% LGO, 40% limestone, 17% CW; (ii) 44% LGO, 51% limestone, 6% CW; and (iii) 89% limestone, 11% LGO. Overall, simulated AMD passively treated by the optimized mixed media compositions met the Philippine effluent standards except for SO₄²⁻. Simulated AMD treated by the optimized mixed media achieved pH values of < 9 and removal efficiencies for Cu, Fe, Mn, Ni, and Al of about 99%, 99%, 98%, 70%, and 96%, respectively.
• Modified Diglycolamide Resin: Characterization and Potential Application for Rare Earth Element Recovery
  Junnile L. Romero; Carlito Baltazar Tabelin; Ilhwan Park; Richard D. Alorro; Joshua B. Zoleta; Leaniel C. Silva; Takahiko Arima; Toshifumi Igarashi; Takunda Mhandu; Mayumi Ito; Steffen Happel; Naoki Hiroyoshi; Vannie Joy T. Resabal
  Minerals, 13, 10, 1330, 1330, MDPI AG, 2023年10月14日
  研究論文（学術雑誌）, Rare earth elements (REEs) are crucial for green energy applications due to their unique properties, but their extraction poses sustainability challenges because the global supply of REEs is concentrated in a few countries, particularly China, which produces 70% of the world’s REEs. To address this, the study investigated TK221, a modified extraction chromatographic resin featuring diglycolamide (DGA) and carbamoyl methyl phosphine oxide (CMPO), as a promising adsorbent for REE recovery. The elemental composition and functional groups of DGA and CMPO on the polystyrene-divinylbenzene (PS-DVB) support of TK221 were confirmed using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), and X-ray photoelectron spectroscopy (XPS). The adsorption kinetics of neodymium (Nd), yttrium (Y), cerium (Ce), and erbium (Er) followed the pseudo-second-order kinetic model and Langmuir isotherm, indicating monolayer chemisorption. Furthermore, iron (Fe) adsorption reached apparent equilibrium after 360 min, with consistent Fe adsorption observed at both 360 min and 1440 min. The inclusion of Fe in the study is due to its common presence as an impurity in most REE leachate solutions. The Fe adsorption isotherm results are better fitted with the Langmuir isotherm, implying chemisorption. Maximum adsorption capacities (qmax) of the resin were determined as follows: Nd (45.3 mg/g), Ce (43.1 mg/g), Er (35.1 mg/g), Y (15.6 mg/g), and Fe (12.3 mg/g). ATR-FTIR analysis after adsorption suggested that both C=O and P=O bands shifted from 1679 cm−1 to 1618 cm−1 and 1107 cm−1 to 1142 cm−1 for Y, and from 1679 cm−1 to 1607 cm−1 and 1107 cm−1 to 1135 cm−1 for Ce, implying possible coordination with REEs. These results suggest that TK221 has a huge potential as an alternative adsorbent for REE recovery, thus contributing to sustainable REE supply diversification.
• A novel recycling route for aluminum alloys: Synthesis of Fe/Al bimetallic materials and magnetic separation
  Ilhwan Park; Mayumi Ito; Sanghee Jeon; Carlito Baltazar Tabelin; Theerayut Phengsaart; Marthias Silwamba; Naoki Hiroyoshi
  Minerals Engineering, 201, 108202, 108202, Elsevier BV, 2023年10月
  研究論文（学術雑誌）
• Recent Studies and Technologies in the Separation of Polyvinyl Chloride for Resources Recycling: A Systematic Review
  Theerayut Phengsaart; Pongsiri Julapong; Chaiwat Manositchaikul; Palot Srichonphaisarn; Monthicha Rawangphai; Onchanok Juntarasakul; Kosei Aikawa; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Mayumi Ito
  Sustainability, 15, 18, 13842, 13842, MDPI AG, 2023年09月18日
  研究論文（学術雑誌）, Material recycling and thermal treatment are the two most common recycling methods employed for plastic waste management. Thermal treatment for energy recovery is more widely applied compared with material recycling because the latter requires a high efficiency of separation and a high purity of products. Unfortunately, certain plastics like polyvinyl chloride (PVC) are unsuitable for thermal treatment because they contain additives like chloride (Cl−) that have adverse effects on refractory materials used in boilers. As a result of this, mixed plastic wastes containing PVC generally end up in landfills. PVC-bearing mixed plastics, however, remain valuable resources as championed by the United Nation Sustainable Development Goals (UN-SDGs): Goal 12 “Responsible production and consumption”, and their recycling after the removal of PVC is important. In this paper, recent studies (2012–2021) related to the separation of PVC from other types of plastics were systematically reviewed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A total of 66 articles were selected, reviewed, and summarized. The results showed that various separation technologies conventionally applied to mineral processing—selective comminution, gravity separation, magnetic separation, electrical separation, and flotation—have been studied for PVC separation, and the majority of these works (>60%) focused on flotation. In addition, more advanced technologies including sorting and density-surface-based separation were introduced between 2019 and 2021.
• A Pretreatment of Refractory Gold Ores Containing Sulfide Minerals to Improve Gold Leaching by Ammonium Thiosulfate: A Model Experiment Using Gold Powder and Arsenic-Bearing Sulfide Minerals
  Takunda Joseph Mhandu; Ilhwan Park; Sanghee Jeon; Sohta Hamatsu; Yogarajah Elakneswaran; Mayumi Ito; Naoki Hiroyoshi
  Metals, 13, 8, 1357, 1357, MDPI AG, 2023年07月28日
  研究論文（学術雑誌）, The use of thiosulfate to extract gold from refractory ores is promising because of its non-toxicity and high selectivity. Sulfide minerals (i.e., pyrite, arsenopyrite, chalcopyrite), major gold carriers in refractory gold ores, however, hinder gold extraction due to the high consumption of a lixiviant. In this study, a new method to improve gold extraction from sulfide bearing gold ores is proposed based on the model experiments using a mixture of gold powder and arsenopyrite-bearing sulfide (HAsBS) ore. The effects of HAsBS ore on gold leaching in ammonium thiosulfate solutions were investigated, and it was found that gold extraction in the presence of HAsBS ore was suppressed because of the unwanted decomposition of thiosulfate on the surface of sulfide minerals. To improve gold extraction in the presence of the sulfide minerals, this study investigated the effects of the pretreatment of HAsBS ore using ammonium solutions containing cupric ions and confirmed that HAsBS ore was oxidized in the pretreatment and its surface was covered by the oxidation products. As a result, thiosulfate consumption was minimized in the subsequent gold leaching step using ammonium thiosulfate, resulting in an improvement in gold extraction from 10% to 79%.
• Rare Earth Elements Recovery from Primary and Secondary Resources Using Flotation: A Systematic Review
  Pongsiri Julapong; Apisit Numprasanthai; Ladda Tangwattananukul; Onchanok Juntarasakul; Palot Srichonphaisarn; Kosei Aikawa; Ilhwan Park; Mayumi Ito; Carlito Baltazar Tabelin; Theerayut Phengsaart
  Applied Sciences, 13, 14, 8364, 8364, MDPI AG, 2023年07月19日
  研究論文（学術雑誌）, Rare earth minerals (REMs) contain rare earth elements (REEs) that are important in modern technologies due to their unique magnetic, phosphorescent, and catalytic properties. However, REMs are not only non-renewable resources but also non-uniformly distributed on the Earth’s crust, so the processing of REE-bearing secondary resources via recycling is one potential route to ensure the long-term sustainability of REE supply. Flotation—a method that separates materials based on differences in their surface wettability—is a process applied for both mineral processing and recycling of REEs, especially when the particles are fine and/or a high-purity product is required. In this review, studies about rare earth flotation from 2012 to 2021 were systematically reviewed using the PRISMA guideline. It was found that most REM flotation research works focused on finding better collectors and depressants while, for recycling, studies on advanced flotation techniques like froth flotation, ion flotation, solvent sublation, electroflotation, and adsorbing colloid flotation with an emphasis on the recovery of dissolved REEs from aqueous solutions dominated.
• Selective Cementation of Gold Using an Iron Oxide and Zero-Valent Aluminum Galvanic System from Gold–Copper Ammoniacal Thiosulfate Solutions
  Joshua Zoleta; Sanghee Jeon; Akuru Kuze; Nako Okada; Ilhwan Park; Mayumi Ito; Yogarajah Elakneswaran; Naoki Hiroyoshi
  Metals, 13, 7, 1289, 1289, MDPI AG, 2023年07月18日
  研究論文（学術雑誌）, Ammonium thiosulfate leaching is a promising alternative to the conventional cyanide method for extracting gold from ores. However, strategies for recovering gold from the leachate are less commercially used due to its low affinity to gold. The present study investigated the recovery of gold from the leachate using iron oxides (hematite, Fe2O3 or magnetite, Fe3O4). Cementation experiments were conducted by mixing 0.15 g of aluminum powder as an electron donor and 0.15 g of an electron mediator (activated carbon, hematite, or magnetite) in 10 mL of ammonium thiosulfate leachate containing 100 mg/L gold ions and 10 mM cupric ions for 24 h at 25 °C. The results of the solution analysis showed that when activated carbon (AC) was used, the gold was recovered together with copper (recoveries were 99.99% for gold and copper). However, selective gold recovery was observed when iron oxides were used, where the gold and copper recoveries were 89.7% and 21% for hematite and 85.9% and 15.4% for magnetite, respectively. An electrochemical experiment was also conducted to determine the galvanic interaction between the electron donor and electron mediator in a conventional electrochemical setup (hematite/magnetite–Al as the working electrode, Pt as the counter electrode, Ag/AgCl as the reference electrode) in a gold–thiosulfate medium. Cyclic voltammetry showed a gold reduction “shoulder-like” peak at −1.0 V using hematite/Al and magnetite/Al electrodes. Chronoamperometry was conducted and operated at a constant voltage (−1.0 V) determined during cyclic voltammetry and further analyzed using SEM-EDX. The results of the SEM-EDX analysis for the cementation products and electrochemical experiments confirmed that the gold was selectively deposited on the iron oxide surface as an electron mediator.
• Carrier Flotation Using Coarse Pyrite for Improving the Recovery of Finely Ground Chalcopyrite: Development of Post-Process of Carrier Flotation to Separate Finely Ground Chalcopyrite Particles from Coarse Pyrite Particles
  Muhammad Bilal; Ilhwan Park; Mayumi Ito; Fawad Ul Hassan; Kosei Aikawa; Sanghee Jeon; Naoki Hiroyoshi
  Minerals, 13, 7, 916, 916, MDPI AG, 2023年07月07日
  研究論文（学術雑誌）, Carrier flotation is a technique that can recover fine particles by using coarse carrier particles during the flotation process. In heterogeneous carrier flotation, coarse mineral particles of different minerals are used as carriers to recover fine mineral particles. By using Cu2+-treated pyrite particles as carriers, fine chalcopyrite particles recovery could be improved. However, a disadvantage of this heterogeneous carrier flotation is that it requires a post-flotation separation process to improve the grade of the final Cu concentrate. This study tested mechanical and chemical treatments to detach finely ground chalcopyrite (D50~3.5 µm) particles from Cu2+-treated coarse pyrite particles (−125 + 106 µm) after flotation. The results showed that the ultrasonic treatment was not effective to detach chalcopyrite fines from Cu2+-treated pyrite particles. However, acid treatment was effective to detach chalcopyrite fines from coarse pyrite particles. At pH 2, approximately 96% of chalcopyrite fines were detached from coarse Cu2+-treated pyrite particles. The acid treatment of flotation froth (mixture of chalcopyrite fines and Cu2+-treated pyrite particles) decomposed the collector KAX (potassium amyl xanthate) and dissolved the Cu precipitates adsorbed on the pyrite surface. This weakened the hydrophobic attraction force between the chalcopyrite fines and coarse pyrite particles, thus promoting the detachment of chalcopyrite fines from Cu2+-treated coarse pyrite particles.
• Development of Microencapsulation-Hybrid Jig Separation Technique as a Clean Coal Technology
  Theerayut Phengsaart; Ilhwan Park; Jirathpapol Pasithbhattarabhorn; Palot Srichonphaisarn; Chinawich Kertbundit; Nutthakarn Phumkokrux; Onchanok Juntarasakul; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Mayumi Ito
  Energies, 2023年03月03日
  研究論文（学術雑誌）
• Development of a three-step approach to repurpose nickel-laterite mining waste into magnetite adsorbents for As(III) and As(V) removal: Synthesis, characterization and adsorption studies
  Einstine M. Opiso; Carlito Baltazar Tabelin; Leonard Marc Ramos; Leonar Jun R. Gabiana; Marybeth Hope T. Banda; Jet Ryan Y. Delfinado; Aileen H. Orbecido; Joshua B. Zoleta; Ilhwan Park; Takahiko Arima; Mylah Villacorte-Tabelin
  Journal of Environmental Chemical Engineering, 11, 1, 108992, 108992, Elsevier BV, 2023年02月
  研究論文（学術雑誌）
• Editorial for Special Issue “Sustainable Production of Metals for Low-Carbon Technologies”
  Ilhwan Park; Marthias Silwamba
  Minerals, 2023年01月
  研究論文（学術雑誌）
• Geochemical audit of a historical tailings storage facility in Japan: Acid mine drainage formation, zinc migration and mitigation strategies
  Carlito Baltazar Tabelin; Asuka Uyama; Shingo Tomiyama; Mylah Villacorte-Tabelin; Theerayut Phengsaart; Marthias Silwamba; Sanghee Jeon; Ilhwan Park; Takahiko Arima; Toshifumi Igarashi
  Journal of Hazardous Materials, 438, 129453, 129453, Elsevier BV, 2022年09月
  研究論文（学術雑誌）
• Flotation of Copper Ores with High Cu/Zn Ratio: Effects of Pyrite on Cu/Zn Separation and an Efficient Method to Enhance Sphalerite Depression
  Kosei Aikawa; Mayumi Ito; Nodoka Orii; Sanghee Jeon; Ilhwan Park; Kazutoshi Haga; Taro Kamiya; Tatsuru Takahashi; Kazuya Sunada; Taisuke Sakakibara; Tatsuhiro Ono; Refilwe S. Magwaneng; Naoki Hiroyoshi
  Minerals, 12, 9, 1103, 1103, MDPI AG, 2022年08月30日
  研究論文（学術雑誌）, Porphyry copper deposits are important sources of copper and typically processed by flotation to produce copper concentrates. As mining areas become deeper, the amounts of impurities, such as sphalerite, can be increased in copper ores, so the appropriate depression of sphalerite floatability should be achieved to obtain saleable copper concentrates. In this study, the flotation behaviors of chalcopyrite and sphalerite in model samples mimicking copper ores with high Cu/Zn ratios (i.e., the ratio of chalcopyrite/sphalerite = 13:1) were investigated with zinc sulfate as a depressant for sphalerite. In addition, the effect of pyrite—a major gangue mineral in copper ores—on the depression of sphalerite floatability with zinc sulfate was examined. When sphalerite and chalcopyrite coexisted, the floatability of the former was effectively depressed by zinc sulfate (Zn recovery: <12%), whereas the presence of pyrite promoted the release of Cu2+ due to the galvanic interaction with chalcopyrite, which resulted in the elimination of the effectiveness of zinc sulfate in depressing sphalerite floatability (Zn recovery: >90%). Despite the presence of much higher amounts of chalcopyrite and pyrite than sphalerite, the application of nitrogen (N2) gas limiting the galvanic interaction between pyrite and chalcopyrite by reducing the dissolved oxygen (DO) concentration in the system effectively depressed the floatability of sphalerite (Zn recovery: <30%).
• Development of a Sustainable Process for Complex Sulfide Ores Containing Anglesite: Effect of Anglesite on Sphalerite Floatability, Enhanced Depression of Sphalerite by Extracting Anglesite, and Recovery of Extracted Pb2+ as Zero-Valent Pb by Cementation Using Zero-Valent Fe
  Kosei Aikawa; Mayumi Ito; Atsuhiro Kusano; Sanghee Jeon; Ilhwan Park; Naoki Hiroyoshi
  Minerals, 12, 6, 723, 723, MDPI AG, 2022年06月06日
  研究論文（学術雑誌）, The presence of anglesite (PbSO4) in complex sulfide ores negatively affects the separation of Cu-Pb sulfides and sphalerite (ZnS) due to lead activation, and PbSO4 rejected to tailings dams contaminates the surrounding environment with lead. To address these problems, this study investigated the application of ethylene diamine tetra acetic acid (EDTA) pretreatment extracting PbSO4 to ZnS flotation and the recovery of the extracted Pb2+ as zero-valent Pb by cementation using zero-valent iron (ZVI). The application of EDTA pretreatment could extract ~99.8% of PbSO4, thus depressing ZnS floatability from 82% to 30%. In addition, cementation using ZVI could recover ~99.7% of Pb2+ from the leachate of EDTA pretreatment.
• The Challenges and Prospects of Recovering Fine Copper Sulfides from Tailings Using Different Flotation Techniques: A Review
  Muhammad Bilal; Ilhwan Park; Vothy Hornn; Mayumi Ito; Fawad Ul Hassan; Sanghee Jeon; Naoki Hiroyoshi
  Minerals, 2022年05月
  研究論文（学術雑誌）
• Alkaline Leaching and Concurrent Cementation of Dissolved Pb and Zn from Zinc Plant Leach Residues
  Marthias Silwamba; Mayumi Ito; Naoki Hiroyoshi; Carlito Baltazar Tabelin; Ryota Hashizume; Tomoki Fukushima; Ilhwan Park; Sanghee Jeon; Toshifumi Igarashi; Tsutomu Sato; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
  Minerals, 12, 4, 2022年04月
  研究論文（学術雑誌）
• Heterogenous carrier flotation technique for recovering finely ground chalcopyrite particles using coarse pyrite particles as a carrier
  Muhammad Bilal; Mayumi Ito; Riku Akishino; Xiangning Bu; Fawad Ul Hassan; Ilhwan Park; Sanghee Jeon; Kosei Aikawa; Naoki Hiroyoshi
  Minerals Engineering, 180, 2022年04月
  研究論文（学術雑誌）
• A simple and efficient recovery technique for gold ions from ammonium thiosulfate medium by galvanic interactions of zero-valent aluminum and activated carbon: A parametric and mechanistic study of cementation
  S. Jeon; S. Bright; I. Park; C.B. Tabelin; M. Ito; N. Hiroyoshi
  Hydrometallurgy, 208, 2022年02月, ［査読有り］
• Advances in Selective Flotation and Leaching Process in Metallurgy
  Ilhwan Park
  Metals, 2022年01月
  研究論文（学術雑誌）
• A Kinetic Study on Enhanced Cementation of Gold Ions by Galvanic Interactions between Aluminum (Al) as an Electron Donor and Activated Carbon (AC) as an Electron Mediator in Ammonium Thiosulfate System
  Sanghee Jeon; Sharrydon Bright; Ilhwan Park; Akuru Kuze; Mayumi Ito; Naoki Hiroyoshi
  Minerals, 12, 1, 2022年01月, ［査読有り］
  研究論文（学術雑誌）
• Recovery of Rare Earth Metals (REMs) from Nickel Metal Hydride Batteries of Electric Vehicles
  Manis Kumar Jha; Pankaj Kumar Choubey; Om Shankar Dinkar; Rekha Panda; Rajesh Kumar Jyothi; Kyoungkeun Yoo; Ilhwan Park
  Minerals, 2021年12月
  研究論文（学術雑誌）
• Development of Hydrometallurgical Process for Recovery of Rare Earth Metals (Nd, Pr, and Dy) from Nd-Fe-B Magnets
  Pankaj Kumar Choubey; Nityanand Singh; Rekha Panda; Rajesh Kumar Jyothi; Kyoungkeun Yoo; Ilhwan Park; Manis Kumar Jha
  Metals, 2021年12月
  研究論文（学術雑誌）
• Beneficiation of Low-Grade Rare Earth Ore from Khalzan Buregtei Deposit (Mongolia) by Magnetic Separation
  Ilhwan Park; Yuki Kanazawa; Naoya Sato; Purevdelger Galtchandmani; Manis Kumar Jha; Carlito Baltazar Tabelin; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Minerals, 11, 12, 2021年12月, ［査読有り］
  研究論文（学術雑誌）
• Addition of Fe3O4 as electron mediator for enhanced cementation of Cd2+ and Zn2+ on aluminum powder from sulfate solutions and magnetic separation to concentrate cemented metals from cementation products
  S. Choi; S Jeon; I. Park; M. Ito; N. Hiroyoshi
  Journal of Environmental Chemical Engineering, 9, 6, 2021年12月, ［査読有り］
• Simultaneous extraction and recovery of lead using citrate and micro-scale zero-valent iron for decontamination of polluted shooting range soils
  Marthias Silwamba; Mayumi Ito; Carlito Baltazar Tabelin; Ilhwan Park; Sanghee Jeon; MasaoTakada; Yasushi Kubo; Naohiro Hokari; Masami Tsunekawa; Naoki Hiroyoshi
  Environmental Advances, 5, 2021年10月, ［査読有り］
• Repurposing of aluminum scrap into magnetic Al0/ZVI bimetallic materials: Two-stage mechanical-chemical synthesis and characterization of products
  C.B. Tabelin; V.J.T. Resabal; I. Park; M.G.B. Vilanueva; S. Choi; R. Ebio; P.J. Cabural; M.V. Tabelin; A. Orbecido; R.D. Alorro; S. Jeon; M. Ito; N. Hiroyoshi
  Journal of Cleaner Production, 317, 2021年10月, ［査読有り］
• A novel arsenic immobilization strategy via a two-step process: Arsenic concentration from dilute solution using schwertmannite and immobilization in Ca–Fe–AsO4 compounds
  Ilhwan Park; Takashino Ryota; Takeuchi Yuto; Carlito Baltazar Tabelin; Theerayut Phengsaart; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Journal of Environmental Management, 295, 2021年10月, ［査読有り］
  研究論文（学術雑誌）
• Agglomeration-flotation of finely ground chalcopyrite using surfactant-stabilized oil emulsions: Effects of co-existing minerals and ions
  V. Horn; I. Park; M. Ito; H Shimada; T. Suto; C.B. Tabelin; S. Jeon; N. Hiroyoshi
  Minerals Engineering, 171, 2021年09月, ［査読有り］
• The Effects of Coexisting Copper, Iron, Cobalt, Nickel, and Zinc Ions on Gold Recovery by Enhanced Cementation via Galvanic Interactions between Zero-Valent Aluminum and Activated Carbon in Ammonium Thiosulfate Systems
  Sanghee Jeon; Sharrydon Bright; Ilhwan Park; Carlito Baltazar Tabelin; Mayumi Ito; Naoki Hiroyoshi
  Metals, 11, 9, 2021年08月, ［査読有り］
  研究論文（学術雑誌）
• Enhanced pyrite passivation by carrier-microencapsulation using Fe-catechol and Ti-catechol complexes
  Xinlong Li; Ilhwan Park; Carlito Baltazar Tabelin; Kosuke Naruwa; Taiki Goda; Chie Harada; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Journal of Hazardous Materials, 416, 2021年08月, ［査読有り］
  研究論文（学術雑誌）
• Copper and critical metals production from porphyry ores and E-wastes: A review of resource availability, processing/recycling challenges, socio-environmental aspects, and sustainability issues
  C.B. Tabelin; I. Park; T. Phengsaart; S. Jeon; M.V. Tabelin; D. Alonzo; K. Yoo; M. Ito; N. Hiroyoshi
  Resources, Conservation and Recycling, 170, 2021年07月, ［査読有り］
• Development of a restraining wall and screw-extractor discharge system for continuous jig separation of mixed plastics
  T. Phengsaart; M. Ito; S. Kimura; A. Azuma; K. Hori; H. Tanno; S. Jeon; I. Park; C.B. Tabelin; N. Hiroyoshi
  Minerals Engineering, 168, 2021年07月, ［査読有り］
• Enhanced cementation of Cd2+, Co2+, Ni2+, and Zn2+ on Al from sulfate solutions by activated carbon addition
  S. Choi; S. Jeon; I. Park; C.B. Tabelin; M. I; N. Hiroyoshi
  Hydrometallurgy, 201, 2021年05月, ［査読有り］
• Synthesis and characterization of coal fly ash and palm oil fuel ash modified artisanal and small-scale gold mine (ASGM) tailings based geopolymer using sugar mill lime sludge as Ca-based activator
  Einstine M. Opiso; Carlito B. Tabelin; Christian V. Maestre; John Paul J. Aseniero; Ilhwan Park; Mylah Villacorte-Tabelin
  Heliyon, 7, 4, Elsevier Ltd, 2021年04月01日
  英語, 研究論文（学術雑誌）
• Suppression of arsenopyrite oxidation by microencapsulation using ferric-catecholate complexes and phosphate
  Ilhwan Park; Kazuki Higuchi; Carlito Baltazar Tabelin; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Chemosphere, 269, 2021年04月, ［査読有り］
  研究論文（学術雑誌）
• Flotation separation of chalcopyrite and molybdenite assisted by microencapsulation using ferrous and phosphate ions: Part II. flotation
  Ilhwan Park; Seunggwan Hong; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Metals, 11, 3, 1, 11, MDPI AG, 2021年03月01日
  英語, 研究論文（学術雑誌）
• Effects of coarse chalcopyrite on flotation behavior of fine chalcopyrite
  M. Bilal; M. Ito; K. Koike; V. Hornn; F.U. Hassan; S. Jeon; I. Park; N. Hiroyoshi
  Minerals Engineering, 163, 2021年03月, ［査読有り］
• Flotation of Seafloor Massive Sulfide Ores: Combination of Surface Cleaning and Deactivation of Lead-Activated Sphalerite to Improve the Separation Efficiency of Chalcopyrite and Sphalerite
  Kosei Aikawa; Mayumi Ito; Atsuhiro Kusano; Ilhwan Park; Tatsuya Oki; Tatsuru Takahashi; Hisatoshi Furuya; Naoki Hiroyoshi
  Metals, 11, 2, 253, 253, MDPI AG, 2021年02月02日
  研究論文（学術雑誌）, The purpose of this study is to propose the flotation procedure of seafloor massive sulfide (SMS) ores to separate chalcopyrite and galena as froth and sphalerite, pyrite, and other gangue minerals as tailings, which is currently facing difficulties due to the presence of water-soluble compounds. The obtained SMS ore sample contains CuFeS2, ZnS, FeS2, SiO2, and BaSO4 in addition to PbS and PbSO4 as Pb minerals. Soluble compounds releasing Pb, Zn2+, Pb2+, and Fe2+/3+ are also contained. When anglesite co-exists, lead activation of sphalerite occurred, and thus sphalerite was recovered together with chalcopyrite as froth. To remove soluble compounds (e.g., anglesite) that have detrimental effects on the separation efficiency of chalcopyrite and sphalerite, surface cleaning pretreatment using ethylene diamine tetra acetic acid (EDTA) was applied before flotation. Although most of anglesite were removed and the recovery of chalcopyrite was improved from 19% to 81% at 20 g/t potassium amyl xanthate (KAX) after EDTA washing, the floatability of sphalerite was not suppressed. When zinc sulfate was used as a depressant for sphalerite after EDTA washing, the separation efficiency of chalcopyrite and sphalerite was improved due to deactivation of lead-activated sphalerite by zinc sulfate. The proposed flotation procedure of SMS ores—a combination of surface cleaning with EDTA to remove anglesite and the depression of lead-activated sphalerite by using zinc sulfate—could achieve the highest separation efficiency of chalcopyrite and sphalerite; that is, at 200 g/t KAX, the recoveries of chalcopyrite and sphalerite were 86% and 17%, respectively.
• Enhanced Cementation of Co2+ and Ni2+ from Sulfate and Chloride Solutions Using Aluminum as an Electron Donor and Conductive Particles as an Electron Pathway
  S. Choi; S Jeon; I. Park; M. Ito; N. Hiroyoshi
  Metals, 11, 2, 2021年02月, ［査読有り］
• Flotation Separation of Chalcopyrite and Molybdenite Assisted by Microencapsulation Using Ferrous and Phosphate Ions: Part I. Selective Coating Formation
  Ilhwan Park; Seunggwan Hong; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Metals, 10, 12, 2020年12月, ［査読有り］
• Kinetic Analysis for Agglomeration-Flotation of Finely Ground Chalcopyrite: Comparison of First Order Kinetic Model and Experimental Results
  Vothy Hornn; Mayumi Ito; Ryosuke Yamazawa; Hiromasa Shimada; Carlito Baltazar Tabelin; Sanghee Jeon; Ilhwan Park; Naoki Hiroyoshi
  61, 10, 2020年09月, ［査読有り］
• Detoxification of lead-bearing zinc plant leach residues from Kabwe, Zambia by coupled extraction-cementation method
  Marthias Silwamba; Mayumi Ito; Naoki Hiroyoshi; Carlito Baltazar Tabelin; Tomoki Fukushima; Ilhwan Park; Sanghee Jeon; Toshifumi Igarashi; Tsutomu Sato; Imasiku Nyambe; Meki Chirwa; Kawawa Banda; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
  Journal of Environmental Chemical Engineering, 8, 4, 104197, 104197, 2020年08月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Agglomeration–Flotation of Finely Ground Chalcopyrite Using Emulsified Oil Stabilized by Emulsifiers: Implications for Porphyry Copper Ore Flotation
  Vothy Hornn; Mayumi Ito; Hiromasa Shimada; Carlito Baltazar Tabelin; Sanghee Jeon; Ilhwan Park; Naoki Hiroyoshi
  Metals, 10, 7, 912, 912, MDPI AG, 2020年07月08日, ［査読有り］
  英語, 研究論文（学術雑誌）, Flotation is the conventional method for processing porphyry copper deposits, one of the most economically important sources of copper (Cu) worldwide. The rapidly decreasing grade of this type of Cu ore in recent years, however, presents serious problems with fine particle recovery using conventional flotation circuits. This low recovery could be attributed to the low collision efficiency of fine particles and air bubbles during flotation. To improve collision efficiency and flotation recovery, agglomeration of finely ground chalcopyrite (CuFeS2) (D50 = 3.5 μm) using emulsified oil stabilized by emulsifiers was elucidated in this study. Specifically, the effects of various types of anionic (sodium dodecyl sulfate (SDS), potassium amyl xanthate (KAX)), cationic (dodecyl amine acetate (DAA)), and non-ionic (polysorbate 20 (Tween 20)) emulsifiers on emulsified oil stability and agglomeration–flotation efficiency were investigated. When emulsifiers were added, the average size of agglomerates increased, resulting in higher Cu recovery during flotation. This dramatic improvement in flotation efficiency could be attributed to the smaller oil droplet size in emulsified oil and their higher stability in the presence of emulsifiers. The utilization of emulsifiers during agglomeration–flotation not only lowered the required agitation strength for agglomeration but also shortened the agglomeration time, both of which made the process easier to incorporate in existing flotation circuits.
• Depression of lead-activated sphalerite by pyrite via galvanic interactions: Implications to the selective flotation of complex sulfide ores
  Kosei Aikawa; Mayumi Ito; Tatsuya Segawa; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi
  Minerals Engineering, 152, 106367, 106367, Elsevier BV, 2020年06月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Redox potential-dependent chalcopyrite leaching in acidic ferric chloride solutions: Leaching experiments
  Nguyen Thi Phuong Thao; Shushi Tsuji; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Mayumi Ito; Naoki Hiroyoshi
  Hydrometallurgy, 194, 105299, 105299, Elsevier BV, 2020年06月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Improvement of Copper Metal Leaching in Sulfuric Acid Solution by Simultaneous Use of Oxygen and Cupric Ions
  Kyoungkeun Yoo; Yujin Park; Sanghyeon Choi; Ilhwan Park
  Metals, 10, 6, 721, 721, MDPI AG, 2020年05月28日, ［査読有り］
  英語, 研究論文（学術雑誌）, A new concept for copper (Cu) metal leaching by the simultaneous use of cupric ions (Cu2+) and oxygen (O2) was proposed to improve Cu metal leaching in sulfuric acid. According to this concept, Cu2+ oxidizes Cu metal into cuprous ion (Cu+), and O2 oxidizes Cu+ into Cu2+. The improvement in Cu leaching efficiency from Cu metal was investigated experimentally in the sulfuric acid solution using Cu2+ and O2 simultaneously. Furthermore, the result was compared with that for the sulfuric acid solution containing neither Cu2+ nor O2 and with the sulfuric acid solution without Cu2+ and O2. When both Cu2+ and O2 were used in the leaching solution, the leaching rate of Cu from Cu metal powder was higher than at other leaching conditions, and the leaching efficiency of Cu increased to more than 99.9% in 1 mol/L sulfuric acid solution at 400 rpm and 50 °C with ≤75 µm Cu metal powder, 1% pulp density, 10,000 mg/L initial Cu2+ concentration, and 100 cc/min O2 introduction. These results indicated that the leaching of Cu from Cu metal could be accelerated by adding Cu2+ and O2 in the sulfuric acid solution.
• Agglomeration-Flotation of Finely Ground Chalcopyrite and Quartz: Effects of Agitation Strength during Agglomeration Using Emulsified Oil on Chalcopyrite
  Vothy Hornn; Mayumi Ito; Hiromasa Shimada; Carlito Baltazar Tabelin; Sanghee Jeon; Ilhwan Park; Naoki Hiroyoshi
  Minerals, 10, 4, 380, 380, MDPI AG, 2020年04月23日, ［査読有り］
  英語, 研究論文（学術雑誌）, In flotation, the size of mineral particles is one of the most important parameters: when the size becomes fine, collision efficiency of the particles and air bubbles becomes low, causing low flotation recovery. To improve the collision efficiency and flotation kinetics, agglomeration using the emulsified oil of finely ground chalcopyrite (D50 = 3.5 μm) was carried out before flotation. In this study, the effects of agitation strength during agglomeration, kerosene dosage and potassium amyl xanthate (KAX) dosage on the flotation were investigated. Agglomeration using emulsified oil improved Cu recovery because the median diameter of agglomerate increased. With increasing agitation strength, KAX and kerosene dosages, Cu recovery was further increased. Agglomeration-flotation of a mixture containing chalcopyrite and quartz with 1:1 ratio (w/w, weight by weight) showed that Si recovery in froth was low and did not change with varying conditions (agitation strength, KAX and kerosene dosages); however, Cu recovery was significantly improved with increasing agitation strength, KAX and kerosene dosages, and thus the separation efficiency was improved.
• Recovery of Lead and Zinc from Zinc Plant Leach Residues by Concurrent Dissolution-Cementation Using Zero-Valent Aluminum in Chloride Medium
  Marthias Silwamba; Mayumi Ito; Naoki Hiroyoshi; Carlito Baltazar Tabelin; Ryota Hashizume; Tomoki Fukushima; Ilhwan Park; Sanghee Jeon; Toshifumi Igarashi; Tsutomu Sato; Meki Chirwa; Kawawa Banda; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
  METALS, 10, 4, 531, 531, 2020年04月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Enhanced cementation of gold via galvanic interactions using activated carbon and zero-valent aluminum: A novel approach to recover gold ions from ammonium thiosulfate medium
  パク イルファン
  Hydrometallurgy, 191, 105165, 2020年, ［査読有り］
  英語, 研究論文（学術雑誌）
• Agglomeration flotation of finely ground chalcopyrite: Comparison of model calculation vs. Experimental results
  Vothy Hornn; Mayumi Ito; Hiromasa Shimada; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Shigeto Kuroiwa; Yuji Aoki
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Agglomeration-flotation of finely ground chalcopyrite: Effects of agitation strength in agglomeration on flotation separation efficiency
  Vothy Hornn; Mayumi Ito; Hiromasa Shimada; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Shigeto Kuroiwa; Yuji Aoki
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Effects of flatness ratio on the particle motion during jig separation of plastic and improvement of jig separation efficiency using modified water pulsation
  Theerayut Phengsaart; Daiki Kitayama; Arisa Azuma; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Mayumi Ito
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Development of discharge systems using restraining walls for continuous jig separation of plastics to improve purity of bottom layer products
  Theerayut Phengsaart; Shoko Kimura; Arisa Azuma; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Mayumi Ito
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Lead removal in zinc leach residues from Kabwe, Zambia by carrier-in-pulp method using zero-valent iron
  M. Silwamba; M. Ito; T. Fukushima; I. Park; S. Jeon; C. B. Tabelin; N. Hiroyoshi
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Estimation of settling velocity and jig separation efficiency of non-spherical plastics using flatness ratio
  Theerayut Phengsaart; Arisa Azuma; Daiki Kitayama; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Mayumi Ito
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Effects of particle geometry on the bubble attachment during hybrid jig separation
  Theerayut Phengsaart; Arisa Azuma; Daiki Kitayama; Shoko Kimura; Sumetas Rittiboon; Apiset Wongthanuwat; Dawan Wiwattanadate; Sanghee Jeon; Ilhwan Park; Carlito Baltazar Tabelin; Naoki Hiroyoshi; Mayumi Ito
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, The Korean Institute of Resources Recycling, 2020年
  英語, 研究論文（国際会議プロシーディングス）
• Effects of galvanic interactions between lead-activated sphalerite and pyrite on flotation
  K. Aikawa; T. Segawa; S. Jeon; I. Park; C. B. Tabelin; N. Hiroyoshi; M. Ito
  15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019, 2020年
  研究論文（国際会議プロシーディングス）
• Carrier-microencapsulation of arsenopyrite using Al-catecholate complex: nature of oxidation products, effects on anodic and cathodic reactions, and coating stability under simulated weathering conditions
  Ilhwan Park; Carlito Baltazar Tabelin; Kensuke Seno; Sanghee Jeon; Hiroyuki Inano; Mayumi Ito; Naoki Hiroyoshi
  Heliyon, 6, 1, e03189, e03189, Elsevier BV, 2020年01月, ［査読有り］, ［筆頭著者, 責任著者］
  英語, 研究論文（学術雑誌）
• Ammonium thiosulfate extraction of gold from printed circuit boards (PCBs) of end-of-life mobile phones and its recovery from pregnant leach solution by cementation
  Sanghee Jeon; Carlito Baltazar Tabelin; Ilhwan Park; Yoshito Nagata; Mayumi Ito; Naoki Hiroyoshi
  Hydrometallurgy, 191, 105214, 105214, Elsevier BV, 2020年01月, ［査読有り］
  英語, 研究論文（学術雑誌）
• A review of recent strategies for acid mine drainage prevention and mine tailings recycling
  Ilhwan Park; Carlito Baltazar Tabelin; Sanghee Jeon; Xinlong Li; Kensuke Seno; Mayumi Ito; Naoki Hiroyoshi
  Chemosphere, 219, 588, 606, 2019年03月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Improvement of flotation and suppression of pyrite oxidation using phosphate-enhanced galvanic microencapsulation (GME) in a ball mill with steel ball media
  パク イルファン
  Minerals Engineering, 143, 105931, 2019年, ［査読有り］
  英語, 研究論文（学術雑誌）
• Development of advanced pyrite passivation strategies towards sustainable management of acid mine drainage
  パク イルファン
  IOP Conference Series: Earth and Environmental Science, 351, 012010, 2019年, ［査読有り］
  英語, 研究論文（国際会議プロシーディングス）
• A physical separation scheme to improve ammonium thiosulfate leaching of gold by separation of base metals in crushed mobile phones
  Sanghee Jeon; Mayumi Ito; Carlito Baltazar Tabelin; Rongrit Pongsumrankul; Shinya Tanaka; Naho Kitajima; Ayumu Saito; Ilhwan Park; Naoki Hiroyoshi
  Minerals Engineering, 138, 168, 177, 2019年, ［査読有り］
  英語, 研究論文（学術雑誌）
• Carrier-microencapsulation using Al-catecholate complex to suppress arsenopyrite oxidation: Evaluation of the coating stability under simulated weathering conditions
  Kensuke Seno; Ilhwan Park; Carlito Tabelin; Kagehiro Magaribuchi; Mayumi Ito; Naoki Hiroyoshi
  MATEC Web of Conferences, 268, 06002, 2019年, ［査読有り］
  英語, 研究論文（国際会議プロシーディングス）
• Formation of surface protective coatings on arsenopyrite using Al-catecholate complex and its mode of inhibition of arsenopyrite oxidation
  Ilhwan Park; Carlito Tabelin; Hiroyuki Inano; Kensuke Seno; Kazuki Higuchi; Mayumi Ito; Naoki Hiroyoshi
  MATEC Web of Conferences, 268, 06015, 2019年, ［査読有り］
  英語, 研究論文（国際会議プロシーディングス）
• Arsenic, selenium, boron, lead, cadmium, copper, and zinc in naturally contaminated rocks: A review of their sources, modes of enrichment, mechanisms of release, and mitigation strategies
  Carlito Baltazar Tabelin; Toshifumi Igarashi; Mylah Villacorte-Tabelin; Ilhwan Park; Einstine M. Opiso; Mayumi Ito; Naoki Hiroyoshi
  Science of The Total Environment, 645, 1522, 1553, 2018年12月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Simultaneous suppression of acid mine drainage formation and arsenic release by Carrier-microencapsulation using aluminum-catecholate complexes (vol 205C, pg 414, 2018)
  Park Ilhwan; Tabelin Carlito Baltazar; Seno Kensuke; Jeon Sanghee; Ito Mayumi; Hiroyoshi Naoki
  CHEMOSPHERE, 209, 1021, 2018年10月, ［査読有り］
• Simultaneous suppression of acid mine drainage formation and arsenic release by Carrier-microencapsulation using aluminum-catecholate complexes
  Ilhwan Park; Carlito Baltazar Tabelin; Kensuke Seno; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi
  Chemosphere, 205, 414, 425, 2018年08月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Gold recovery from shredder light fraction of E-waste recycling plant by flotation-ammonium thiosulfate leaching
  Sanghee Jeon; Mayumi Ito; Carlito Baltazar Tabelin; Rongrit Pongsumrankul; Naho Kitajima; llhwan Park; Naoki Hiroyoshi
  Waste Management, 77, 195, 202, Elsevier Ltd, 2018年07月01日, ［査読有り］
  英語, 研究論文（学術雑誌）
• Behaviors of Cyanide Leaching of Gold in Tailings and Adsorption of Gold Ions on Activated Carbon
  Jayhyun Park; Ilhwan Park; Jumi Oh; Kyoungkeun Yoo
  The Korean Society of Mineral and Energy Resources Engineers, 55, 5, 414, 420, 2018年, ［査読有り］
  研究論文（学術雑誌）
• Interference of coexisting copper and aluminum on the ammonium thiosulfate leaching of gold from printed circuit boards of waste mobile phones
  Sanghee Jeon; Carlito Baltazar Tabelin; Hirotaka Takahashi; Ilhwan Park; Mayumi Ito; Naoki Hiroyoshi
  Waste Management, 81, 148, 156, 2018年, ［査読有り］
  英語, 研究論文（学術雑誌）
• Suppression of the release of arsenic from arsenopyrite by carrier-microencapsulation using Ti-catechol complex
  Ilhwan Park; Carlito Baltazar Tabelin; Kagehiro Magaribuchi; Kensuke Seno; Mayumi Ito; Naoki Hiroyoshi
  Journal of hazardous materials, 344, 322, 332, 2018年, ［査読有り］
  英語, 研究論文（学術雑誌）
• Simultaneous leaching of arsenite, arsenate, selenite and selenate, and their migration in tunnel-excavated sedimentary rocks: II. Kinetic and reactive transport modeling
  Carlito Baltazar Tabelin; Ryosuke Sasaki; Toshifumi Igarashi; Ilhwan Park; Shuichi Tamoto; Takahiko Arima; Mayumi Ito; Naoki Hiroyoshi
  CHEMOSPHERE, 188, 444, 454, 2017年12月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Simultaneous leaching of arsenite, arsenate, selenite and selenate, and their migration in tunnel-excavated sedimentary rocks: I. Column experiments under intermittent and unsaturated flow
  Carlito Baltazar Tabelin; Ryosuke Sasaki; Toshifumi Igarashi; Ilhwan Park; Shuichi Tamoto; Takahiko Arima; Mayumi Ito; Naoki Hiroyoshi
  CHEMOSPHERE, 186, 558, 569, 2017年11月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Leaching of Copper from Cuprous Oxide in Aerated Sulfuric Acid
  Ilhwan Park; Kyoungkeun Yoo; Richard Diaz Alorro; Min-Seuk Kim; Soo-Kyung Kim
  MATERIALS TRANSACTIONS, 58, 10, 1500, 1504, 2017年, ［査読有り］
  英語, 研究論文（学術雑誌）
• The Effect of Grinding and Roasting Conditions on the Selective Leaching of Nd and Dy from NdFeB Magnet Scraps
  Ho-Sung Yoon; Chul-Joo Kim; Kyung Woo Chung; Sanghee Jeon; Ilhwan Park; Kyoungkeun Yoo; Manis Kumar Jha
  METALS, 5, 3, 1306, 1314, 2015年09月, ［査読有り］
  英語, 研究論文（学術雑誌）
• Fine Particle Classification and Dewatering of Construction Waste Slurry Using Hydrocyclone
  Hee-young Shin; Sang-woo Ji; Sanghyeon Choi; Ilhwan Park; Kyoungkeun Yoo; Jay Hyun Park; Richard Diaz Alorro
  The Korean Society of Mineral and Energy Resources Engineers, 52, 6, 627, 631, 2015年, ［査読有り］
  研究論文（学術雑誌）
• The effects of temperature and agitation speed on the leaching behaviors of tin and bismuth from spent lead free solder in nitric acid leach solution
  Sanghee Jeon; Ilhwan Park; Kyoungkeun Yoo; Hojin Ryu
  Geosystem Engineering, 18, 4, 213, 218, 2015年, ［査読有り］
  英語, 研究論文（学術雑誌）

• Carrier magnetic separation to recover finely ground rare earth minerals: The effect of gravity separation as a pre-concentration step
  Ilhwan Park; Taito Horii; Mayumi Ito; Naoki Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2022, 2022年12月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Flotation of finely ground chalcopyrite in the presence of nanobubbles
  Yukun Liu; Naoki Hiroyoshi; Mayumi Ito; Ilhwan Park, Proceedings of International Symposium on Earth Science and Technology 2022, 2022年12月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Iron Oxide as Electron Mediator in Gold Cementation with Zero-Valent Aluminum in Gold-Copper Ammoniacal Thiosulfate Medium
  Joshua B. Zoleta; Sanghee Jeon; Akuru Kuze; Ilhwan Park; Mayumi Ito; Naoki Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2022, 2022年12月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Application of microencapsulation technique for improving flotation separation of chalcopyrite and molybdenite
  Ilhwan Park; Dai Uchida; Kosei Aikawa; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi, Proceedings of Copper 2022, 2022年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Refractory gold ores: A focus on advances in pretreatment techniques in thiosulfate leaching systems of As/Sb bearing gold ores
  Takunda Joseph Mhandu; Shota Hamatsu; Sanhee Jeon; Ilhwan Park; Mayumi Ito; Naoki Hiroyoshi, Proceedings of the 16th International Symposium on East Asian Resources Recycling Technology, 2022年10月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Effects of anglesite on the flotation of sphalerite in complex sulphide ores and a method to suppress sphalerite floatability
  K. Aikawa, M. Ito, A. Kusano, S. Jeon, I. Park, N. Hiroyoshi, Proceedings of International Mineral Processing Congress Asia-Pacific 2022, 2022年08月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Investigation of Flotation Behaviors of Fine Particles in a Complex Ore Consisting of Various Copper Minerals
  Y. Ebisu; J. V. Satur; K. Mitsuhashi; K. Aikawa; T. Suto; I. Park; M. Ito; N. Hiroyoshi, Proceedings of International Mineral Processing Congress Asia-Pacific 2022, 2022年08月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Challenges and approaches to flotation of seafloor massive sulphide ores
  K. Aikawa; I. Park; N. Hiroyoshi; M. Ito, Proceedings of International Future Mining Conference 2021 (web), 2021年12月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• A study on the water injection method of Falcon-Knelson concentrator
  R. Matsuoka; M. Ito; S. Jeon; I. Park; N. Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2021, 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Effects of coexisting pyrite on suppression of sphalerite in the flotation of copper-zinc sulfides
  N. Orii; M. Ito; K. Aikawa; S. Jeon; I. Park; R. Magwaneng; T. Ono; T. Sakakibara; K. Sunada; N. Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2021, 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Study of autogenous carrier flotation technique for finely ground chalcopyrite particles – a review
  M. Bilal; M. Ito; K. Koike; V. Hornn; F.U. Hassan; S. Jeon; I. Park; N. Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2021, 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• A new method to detect product boundary in jig separator using pressure sensor
  N. Sawada; M. Ito; S. Kimura; I. Park; S. Jeon; N. Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2021, 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• A REVIEW OF GOLD EXTRACTION FROM ARSENIC/ANTIMONY BEARING ORES
  T.J. Mhandu; N. Hiroyoshi; M. Ito; I. Park; S. Jeon, Proceedings of International Symposium on Earth Science and Technology 2021, 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Enhanced magnetic separation of finely-ground rare earth minerals by oil agglomeration
  Y. Kanazawa; M. Ito; N. Sato; S. Jeon; I. Park; N. Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology 2021, 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Agglomeration-flotation to minimize the loss of finely-ground copper sulfides to tailings causing environmental pollution at mine sites
  T. Suto; M. Ito; H. Shimada; S. Jeon; I. Park; N. Hiroyoshi, Proceedings of Geo-environmental Engineering and Recycling (GER) 2021 (web), 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Selective formation of hydrophilic iron phosphate coating on chalcopyrite to separate from sphalerite in flotation
  I. Park; S. Hong; U. Dai; S. Jeon; M. Ito; N. Hiroyoshi, Proceedings of Geo-environmental Engineering and Recycling (GER) 2021 (web), 2021年11月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• 硫酸鉛鉱共存下での閃亜鉛鉱の浮選における鉱石洗浄とセメンテーションを組み合わせたコンカレント処理
  相川公政; 伊藤真由美; 草野敦大; JEON Sanghee; PARK Ilhwan; 広吉直樹, 資源・素材(Web), 2021, 2021年
• A study of autogenous carrier flotation technique for selective separation of fine chalcopyrite
  M. Bilal; M. Ito; K. Koike; I. Park; S. Jeon; N. Hiroyoshi, Proceedings of International Conference on Innovations for Sustainable and Responsible Mining (ISRM) 2020, 2020年10月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Microencapsulation of Chalcopyrite and Molybdenite using Fe2+ and PO43– for Selective Flotation
  S. Hong; I. Park; S. Jeon; M. Ito; N. Hiroyoshi, Proceedings of International Conference on Innovations for Sustainable and Responsible Mining (ISRM) 2020, 2020年10月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• Simultaneous extraction and sequestration of lead and zinc from zinc leach residues using acidified brine solution and zero-valent aluminum
  M. Silwamba; M. Ito; I. Park; C.B. Tabelin; S. Jeon; N. Hiroyoshi, Proceedings of International Mineral Processing Congress (IMPC) 2020, 2020年10月
  英語, 記事・総説・解説・論説等（国際会議プロシーディングズ）
• A review of recent advances in depression techniques for flotation separation of cu–mo sulfides in porphyry copper deposits
  Ilhwan Park; Seunggwan Hong; Sanghee Jeon; Mayumi Ito; Naoki Hiroyoshi, Metals, 10, 9, 1, 26, 2020年09月01日
  MDPI AG, 英語, 書評論文,書評,文献紹介等
• 鉛で活性化された閃亜鉛鉱の浮遊性に及ぼす黄鉄鉱共存の影響
  相川公政; 瀬川達也; JEON Sanghee; PARK Ilhwan; TABELIN Carlito; TABELIN Carlito; 広吉直樹; 伊藤真由美, 資源・素材学会春季大会(Web), 2020, 2020年
• 鉛イオンで活性化された閃亜鉛鉱の浮遊性に及ぼす亜硫酸ナトリウムの影響
  草野敦大; 相川公政; JEON Sanghee; PARK Ilhwan; 広吉直樹; 伊藤真由美, 資源・素材学会春季大会(Web), 2020, 2020年
• 銅・亜鉛硫化鉱の浮選における閃亜鉛鉱の浮遊抑制
  折井のどか; 相川公政; JEON Sanghee; PARK Ilhwan; 広吉直樹; 伊藤真由美, 資源・素材学会春季大会(Web), 2020, 2020年
• 銅・亜鉛硫化鉱の浮選における閃亜鉛鉱の浮遊性に及ぼす各種抑制剤の影響
  伊藤真由美; 折井のどか; 相川公政; JEON Sanghee; PARK Ilhwan; 広吉直樹; MAGWANENG Refilwe; 工藤賢太郎; 砂田和也; 高橋達, 資源・素材(Web), 2020, 2020年
• 閃亜鉛鉱の浮選に及ぼす鉛イオンおよび亜硫酸ナトリウム濃度の影響
  伊藤真由美; 草野敦大; 相川公政; JEON Sanghee; PARK Ilhwan; 広吉直樹, 資源・素材(Web), 2020, 2020年
• 鉛で活性化された閃亜鉛鉱の浮遊性に及ぼすガルバニック相互作用の影響
  伊藤真由美; 相川公政; 瀬川達也; JEON Sanghee; PARK Ilhwan; TABELIN Carlito; 広吉直樹, 資源・素材学会北海道支部春季講演会講演要旨集, 2019, 2019年
• Suppression of the release of arsenic from arsenopyrite by titanium- and aluminum-based carrier-microencapsulation
  I. Park; C.B. Tabelin; K. Seno; K. Magaribuchi; M. Ito; N. Hiroyoshi, Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, 305, 311, 2018年
  英語, 研究発表ペーパー・要旨（国際会議）
• Comparison of electrochemical properties of various metal-catecholate complexes for carrier-microencapsulation
  X. Li; C. Harada; I. Park; N. Hiroyoshi; C.B. Tabelin; M. Ito, Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, 344, 348, 2018年
  英語, 研究発表ペーパー・要旨（国際会議）
• The roles of soluble phases in the release of geogenic arsenic and selenium from tunnel-excavated rocks of marine origin
  C.B. Tabelin; R. Sasaki; T. Igarashi; I. Park; S. Tamoto; T. Arima; M. Ito; N. Hiroyoshi, Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, 312, 319, 2018年
  英語, 研究発表ペーパー・要旨（国際会議）
• Carrier-microencapsulation using Al-catechol complex for suppressing arsenic release from arsenopyrite
  I. Park; K. Seno; K. Magaribuchi; C.B. Tabelin; M. Ito; N. Hiroyoshi, the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, 10, 15, 2017年
  英語, 研究発表ペーパー・要旨（国際会議）
• Suppressive effects of aluminum-catechol complexes on the release of arsenic from arsenopyrite
  I. Park; K. Seno; K. Magaribuchi; C.B. Tabelin; M. Ito; N. Hiroyoshi, Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, 31, 2017年
  英語, 研究発表ペーパー・要旨（国際会議）
• Effects of aluminum-catechol complexes on pyrite oxidation
  I. Park; C.B. Tabelin; K. Seno; K. Magaribuchi; M. Ito; N. Hiroyoshi, Proceedings of International Symposium on Earth Science and Technology, 611, 614, 2017年
  英語, 研究発表ペーパー・要旨（国際会議）
• Suppression of arsenopyrite oxidation by carrier microencapsulation using Ti-catechol complex.
  I. Park; K. Magaribuchi; S. Veerawattananum; C.B. Tabelin; M. Ito; N. Hiroyoshi; T. Igarashi, the 9th International Conference on Earth Resources Technology,, 918, 928, 2016年
  英語, 研究発表ペーパー・要旨（国際会議）

• 資源環境修復学, 2024年, 修士課程, 工学院
• 資源環境修復学特論, 2024年, 修士課程, 工学院
• 資源環境修復学特論, 2024年, 博士後期課程, 工学院
• 物理化学演習, 2024年, 学士課程, 工学部
• 技術英語, 2024年, 学士課程, 工学部
• 資源循環システム実験Ⅰ, 2024年, 学士課程, 工学部
• 資源循環システム実験Ⅲ, 2024年, 学士課程, 工学部
• 物理化学, 2024年, 学士課程, 工学部
• 資源循環デザイン, 2024年, 学士課程, 工学部

• Development of a novel eco-friendly process for gold extraction from refractory ores: Application of microencapsulation technique to gold hydrometallurgical process towards achieving carbon neutrality
  科学研究費助成事業
  2024年04月01日 - 2027年03月31日
  PARK ILHWAN
  日本学術振興会, 若手研究, 北海道大学, 24K17639
• 金のグリーンマイニング実現のための新しい製錬技術の開発とその難処理鉱石への応用
  科学研究費助成事業
  2023年04月01日 - 2026年03月31日
  廣吉 直樹; 伊藤 真由美; PARK ILHWAN
  硫ヒ鉄鉱などの硫化鉱物の結晶中に金が閉じ込められた形で存在する難処理金鉱石から，毒性の高いシアンに替わる安全な溶媒を用いて金を抽出する技術を開発することを目指して，チオ硫酸アンモニア溶液を用いたヒ素含有難処理鉱から金の浸出・回収法について検討した.
  金粉末と硫ヒ鉄鉱の混合物を用いたモデル実験を行い, チオ硫酸アンモニウム溶液中での金の抽出に及ぼす硫ヒ鉄鉱の影響を調べた. このモデル実験では硫化鉱物の結晶中に金が含まれているわけではないが, それでも硫ヒ鉄鉱が共存すると金の抽出率が著しく低下した.SEM-EDX や XPS による表面分析の結果, 浸出の過程で金の表面には硫化銅, 酸化鉄および元素硫黄などの薄膜が生成することが確かめられたが, この薄膜は硫ヒ素鉄鉱の共存の有無に関わらず生成しており, 金の浸出を抑制する不動態膜とは考えられない．溶液分析の結果によれば, 硫ヒ鉄鉱が共存する場合には存在しない時よりも急速に 金の浸出に不可欠なチオ硫酸イオンが分解することが確かめられたことから, 硫ヒ鉄鉱の共存によるチオ硫酸イオンの分解が金浸出抑制の主原因であるものと考えられる.
  浸出貴液からの金の回収法として，アルミニウムを電子供与体，活性炭を電子伝達媒体粒子とするセメンテーション法について検討した．溶液分析や電子顕微鏡観察などの結果，金はアルミニウムの表面に付着した活性炭上に還元析出して回収されることが確認された．活性炭を用いた場合，溶液中に浸出触媒として含まれる銅も金とともに非選択的に還元析出してしまったが，活性炭の代わりに半導体性の酸化鉄 (マグネタイトあるいはヘマタイト) を用いて実験したところ，金のみが選択的に還元析出することを見出した．
  日本学術振興会, 基盤研究(C), 北海道大学, 23K04642
• Mining4.0時代における効率的な発破のためのデジタルツイン技術の共創
  科学研究費助成事業
  2021年10月07日 - 2025年03月31日
  川村 洋平; 北原 格; 宍戸 英彦; 鳥屋 剛毅; 福田 大祐; 菊池 亮佑; PARK ILHWAN; 謝 淳
  本共同研究は、世界の鉱業が目指す“2050年の低炭素型自動化・無人化鉱山操業”を牽引する次世代鉱山デジタルツインテクノロジーを開発するものである。自動化および無人化が最も必要とされる発破現場の切羽と発破起砕物（モックパイル）を対象に、３次元形状復元などの多次元情報処理と深層学習に代表される人工知能を統合することでCyber-Physical Blastingプラットフォームを構築する。その中で多様な発破シミュレーションおよび検証実験を繰り返し、モックパイル粒度分布推定や発破デザインなどの自動化システムを実装することにより、最適発破計画、発破効率向上、生産率向上、生産管理および安全管理を実現とするものである。
  本研究チームは、鉱業界で世界随一の規模と研究体制を誇るの研究教育コンソーシアムMining Education Australiaと関わりが深く、MEAが推し進める“未来のスマートマイニングに資する共同研究”に、本研究の研究成果である高度ICTを導入することで国際共同研究開発を加速・推進した。国内外の先進的な研究者で組織された学際研究チームが、上記コンソーシアムや海外資源採掘企業と緊密に連携しながら研究開発を実施することにより、実用化の先鞭を付けること目指した。
  3年目である2023年度は10名の若手研究者（修士学生）をCurtin大学、Queensland大学へ1カ月派遣した。また、Curtin大学からはオーストラリア側対応者であるHyongdoo Jang氏を日本に招聘し研究打合せと講演を実現した。さらにブリスベンで開催されたWorld Mining Congressに3名の関係学生を派遣し、学会発表や懇親を行う等の十分な交流を実現した。国内では研究項目である人工知能による発破デザイン最適化システムを開発して。
  日本学術振興会, 国際共同研究加速基金(国際共同研究強化(B)), 北海道大学, 21KK0070
• Development of an advanced magnetic separation technology assisted by agglomeration for improving the recovery of rare earth minerals from finely ground low-grade ores
  科学研究費助成事業 若手研究
  2020年04月 - 2023年03月
  PARK ILHWAN
  This research aims at developing advanced magnetic separation techniques for the recovery of rare earth element (REE)-bearing minerals from
  Mongolian ore deposits. The most important achievements of this study are summarized as follows:
  1. Dry high-intensity magnetic separation (DHIMS) of ground REE ore (-0.5 + .01 mm) could achieve the enrichment ratio of 2.8 with a TREO recovery of 70%.
  2. Wet high-intensity magnetic separation (WHIMS) of ground REE ore (-106 + 75 μm) enriched TREO content by 5.5 times with a TREO recovery of ~80%.
  3. Agglomeration of finely-ground bastnaesite (D50 = ~3 μm) using BHA increased the particle size to > 8 μm, which improved its recovery by WHIMS from 50% to 95%.
  日本学術振興会, 若手研究, 北海道大学, 20K15214
• チオ硫酸アンモニウムによる金鉱石からの新たな高効率金回収プロセスの開発
  金属資源の生産技術に関する基礎研究
  2020年04月 - 2022年03月
  Sanghee Jeon; Naoki Hiroyoshi; Mayumi Ito; Ilhwan Park; Sharrydon Brigh
  独立行政法人石油天然ガス・金属鉱物資源機構, 北海道大学, 研究分担者
• 硫化鉱物の選択浮選へのマイクロエンカプセレーション技術の応用
  金属資源の生産技術に関する基礎研究
  2019年04月 - 2021年03月
  Ilhwan Park; Naoki Hiroyoshi; Mayumi Ito; Higuchi Kazuki; Seunggwan Hong
  独立行政法人石油天然ガス・金属鉱物資源機構, 金属資源の生産技術に関する基礎研究, 北海道大学, 研究代表者
• 微細粒子の浮選技術開発
  2019年04月
  Naoki Hiroyoshi; Mayumi Ito; Ilhwan Park; Vothy Hornn; Hiromasa Shimada
  住友金属鉱山株式会社, 北海道大学, 連携研究者
• 銅亜鉛分離浮選における亜鉛鉱物抑制機構の解明のための基礎研究
  難処理鉱選鉱製錬技術開発事業
  2019年04月
  Mayumi Ito; Ilhwan Park; Kosei Aikawa; Nodoka Orii
  独立行政法人石油天然ガス・金属鉱物資源機構, 北海道大学, 連携研究者