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Hideo Maruyama
Faculty of Fisheries Sciences　Marine Life Science　Marine Chemical Resource Development
Associate Professor
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Last Updated :2024/05/09

Researcher Profile and Settings

Affiliation

  • Faculty of Fisheries Sciences　Marine Life Science　Marine Chemical Resource Development

Job Title

  • Associate Professor

Degree

  • Ph.D.（Hokkaido University）

ORCID ID

J-Global ID

Research Interests

  • chemical engineering   separation operation   reaction engineering   adsorption process   foam separation   flocculation   biodiesel   fisheries' biomass   

Research Areas

  • Life sciences / Marine/Aquatic life sciences
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Applied biofunctional and bioprocess engineering
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Transfer phenomena and unit operations
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Chemical reaction and process system engineering

Educational Organization

Academic & Professional Experience

  • 2009/04 - Today Hokkaido University Faculty of Fisheries Sciences
  • 2005/04 - 2009/03 Hokkaido University Faculty of Fisheries Sciences
  • 2000/04 - 2005/03 北海道大学大学院 助手 配置換え(水産科学研究科)
  • 1995/04 - 2000/03 同助手(水産学部海洋生物資源化学科生物化学工学講座)
  • 1991/10 - 1995/03 北海道大学 助手(水産学部水産化学科化学工学講座)

Education

  •        - 1991/10  Hokkaido University
  •        - 1991/03  Hokkaido University
  •        - 1989/03  Hokkaido University  School of Fisheries Sciences

Association Memberships

  • 化学工学会   

Research Activities

Published Papers

  • Hideo Maruyama
    Surfaces 7 (2) 208 - 224 2024/03/30 [Refereed][Invited]
  • Hideo Maruyama, Hideshi Seki
    Separations 10 (10) 530  2023/10 [Refereed][Not invited]
  • Rino Tsukimura, Hideshi Seki, Hideo Maruyama
    Bulletin of Fisheries Sciences, Hokkaido University 73 (2) 57 - 63 2023/09 [Not refereed][Not invited]
  • Rino Tsukimura, Hideshi Seki, Hideo Maruyama
    Bulletin of Fisheries Sciences, Hokkaido University 73 (2) 45 - 55 2023/09 [Not refereed][Not invited]
  • Hideo Maruyama, Akito Furukawa, Hideshi Seki
    Separations 10 (4) 244  2023/04/06 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki
    Biochemical Engineering Journal 192 108843  2023/02/10 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki
    Asia-Pacific Journal of Chemical Engineering 18 (2) e2870  2022/12/19 [Refereed][Not invited]
  • Hideo MARUYAMA, Keito Fukuchi, Hideshi SEKI
    Biochemical Engineering Journal 188 108689  2022/10/19 [Refereed][Not invited]
  • Ryo Taguchi, Hideshi Seki, Hideo Maruyama
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 650 129210 - 129210 0927-7757 2022/05/09 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki
    Process Safety and Environmental Protection 162 1102 - 1106 0957-5820 2022/05 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki
    Biochemical Engineering Journal 180 108356 - 108356 1369-703X 2022/03 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki
    Process Safety and Environmental Protection 159 566 - 574 0957-5820 2022/03 [Refereed]
  • Hideo Maruyama, Hideshi Seki
    Separation Science and Technology 57 (10) 1535 - 1542 0149-6395 2022 [Refereed]
  • Hideo Maruyama, Hideshi Seki, Akito Furukawa
    Colloid and Interface Science Communications 44 100468 - 100468 2215-0382 2021/09 [Refereed]
  • Hideo Maruyama, Hideshi Seki
    Water Science and Technology 82 (9) 1868 - 1876 0273-1223 2020/11/01 [Refereed]
     
    Abstract The effect of ethylated soy protein-based bioflocculant (EtSP) as a filter aid reagent was investigated. The efficiency of EtSP as a filter aid was evaluated in terms of the specific cake resistance, α, and was compared with chitosan and polyaluminum chloride (PAC). Diatomite and kaolin were used as model particles. Total filtration resistance, R, decreased with increasing flocculant dosage (wt.%, flocculant/particle) and was almost constant in the range of 1 wt.% or more for both particles. The α value was significantly decreased from 1.01 × 1011 to 9.01 × 1010 m/kg for diatomite and from 5.11 × 1010 to 5.20 × 109 m/kg for kaolin by the addition of EtSP in the case of 1.0 wt.%. The α value for cakes formed by EtSP was much smaller than that formed by chitosan and PAC. In the case of diatomite, in the dose range of 0.5–1.0 wt.%, the α value for cakes formed by EtSP and chitosan was almost the same. However, at the excess dose of 2.0 wt.% over, the α value formed by chitosan abruptly increased. In the case of kaolin, in the dose range of 1.0–2.0 wt.%, the α values of chitosan and PAC were mostly the same, however, these values were larger by ca. nine times than that of EtSP.
  • Hideo Maruyama, Hideshi Seki, Ako Igi
    Biochemical Engineering Journal 162 107713 - 107713 1369-703X 2020/10 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki
    Biochemical Engineering Journal 159 107584 - 107584 1369-703X 2020/07 [Refereed][Not invited]
  • 競争吸着法によるコンブのヨウ素低減方法
    伊木 亜子, 喜多 壮太, 丸山 英男, 関 秀司
    化学工学論文集 44 (4) 247 - 252 2018/08 [Refereed][Not invited]
  • イカ内蔵のカドミウム除去に用いるキレート樹脂のカドミウム吸脱着特性
    杉崎 篤, 喜多 壮太, 丸山 英男, 関 秀司
    北海道大学水産学部研究彙報 67 (1) 1 - 5 2017 [Not refereed][Not invited]
  • Hideshi Seki, Hideo Maruyama, Masao Kawabe
    Nippon Suisan Gakkaishi (Japanese Edition) 81 (1) 90 - 96 1349-998X 2015 [Refereed][Not invited]
     
    A model for the system design and optimum operation control of our system for removing cadmium from squid viscera by means of the competitive adsorption method is proposed. The adsorption and desorption data of cadmium on chelating resin and squid viscera fit an ion exchange model. However, in the competitive adsorption process, the cadmium adsorption constant of the chelating resin was significantly lowered by divalent metals contained in squid viscera. The competitive adsorption model was derived by correcting the cadmium adsorption constant as a function of the solid concentration of squid viscera. The model could determine the optimum dosage of chelating resin corresponding to the cadmium content and water content of squid viscera.
  • Hideshi Seki, Hideo Maruyama, Masao Kawabe, Akihito Nakade
    Nippon Suisan Gakkaishi (Japanese Edition) 79 (4) 703 - 710 1349-998X 2013 [Refereed][Not invited]
     
    Essential parameters for the system design and optimum operation control of our system for removing cadmium from squid viscera by means of the competitive adsorption method were determined. The overall heat transfer coefficient of the squid viscera dissolution (auto-degradation) process was determined by Newton's heat transfer equation using the data obtained from laboratory-scale experiments. The temperature rising behavior of squid viscera closely followed Newton's equation. The results calculated from Newton's equation with the determined overall heat transfer coefficient matched the temperature rising behavior of squid viscera in a 1000-fold larger pilot scale squid viscera dissolution tank. The filter medium resistance and the specific cake resistance of solid matter in dissolved squid viscera were determined by Ruth's filtration equation. The filtration behavior of dissolved squid viscera closely followed Ruth's equation, and the filter medium resistance and the specific cake resistance could be obtained.
  • Xin Liu, Hideshi Seki, Hideo Maruyama
    SEPARATION AND PURIFICATION TECHNOLOGY 93 1 - 7 1383-5866 2012/06 [Refereed][Not invited]
     
    In this study, methylated soy protein (MeSP) was applied to the solid-liquid separation or flocculation of kaolin and kanto loam (deposits of volcanic ash) suspensions (3.0 g/L). The flocculation performance of MeSP was evaluated in terms of supernatant clarity (jar test method) and floc settling rate (sedimentation balance method), and compared with those of chitosan and polyaluminum chloride (PAC). At pH 7, the optimum dosage of MeSP, chitosan and PAC were almost the same (about 1.5 wt.% of the suspended solids), but there was a remarkable difference in the floc settling rate. At the optimum dosage, the settling rate of the floc formed by MeSP was 6-7 mm/s, while those formed by chitosan and PAC were about 2 mm/s. MeSP showed the highest flocculation performance at pH 3-7 among these flocculants. At pH 8-12, the flocculation performance of MeSP was much higher than that of PAC, but lower than that of chitosan. The flocculation performance of MeSP for kanto loam suspension was strongly affected by the addition of seawater, while the effect of seawater concentration on the flocculation performance of MeSP for kaolin was moderate. (C) 2012 Elsevier B.V. All rights reserved.
  • Hideo Maruyama, Hideshi Seki, Yuuki Satoh
    WATER RESEARCH 46 (9) 3094 - 3100 0043-1354 2012/06 [Refereed][Not invited]
     
    In this study, o/w emulsion flotation experiments were conducted by adding methylated milk casein (MeSC). Emulsion used in this study was prepared by ultrasonic emulsification of heavy oil (bunker-A) and sodium dodecyl sulfate (SDS) solution. A simple kinetic model was proposed to estimate the removal rate of the oil droplets within the column. The model was based on main assumption that adsorption of single droplet adsorbed MeCS or floc onto bubble surface within flotation column. Removal rate constant, K, was defined by k(a) X-s (S-b tau/V), where k(a) and X-s are overall adsorption rate and saturated adsorption density of oil droplet or floc, S-b, tau and V are bubble surface production rate, retention time of bubble swarms and emulsion volume within the column, respectively. The experiments were conducted with varying operating conditions; superficial gas velocity, column dimension and emulsion volume. K was evaluated from slope value of obtained straight line by plotting time versus ln (T/T-0), where T/T-0 is relative turbidity. K was mostly proportional to (S-b tau/V), which corresponds to specific surface area of bubble swarms per unit volume within the column, in the present experimental region. This result suggested that efficiency of this removal process was mainly controlled by the specific surface area of bubble swarms, and proposed model was fundamentally verified. (C) 2012 Elsevier Ltd. All rights reserved.
  • Jun Xiao, Miyamoto Chikanori, Ke-Feng Yu, Seki Hideshi, Maruyama Hideo, Pei-Min He
    WATER SCIENCE AND TECHNOLOGY 65 (8) 1514 - 1520 0273-1223 2012 [Refereed][Not invited]
     
    In this paper, study of the biosorption of Cd2+ and Pb2+ by nonliving Laminaria japonica in a batch adsorption system is described. The content of acidic sites and the dissociation constant of carboxylic acid functional groups (metal-binding site) of L. japonica were experimentally determined by conductometric and potentiometric titrations and theoretically predicated by using monodentate and bidentate binding models. The models are based on the monodentate or bidentate binding reactions of bivalent metal ions to acidic sites. The acidic site content and carboxylic acid dissociation constants determined are 1.25 and 0.18 mmol L-1, respectively. The results showed that the bidentate adsorption model fits well the biosorption of bivalent metal ions onto L. japonica with the bidentate binding constants for Cd2+ and Pb2+ being 5.72 x 10(3) and 6.24 x 10(4) L mol(-1), respectively. The adsorption process of L. japonica followed the pseudo-second-order kinetics.
  • Hideshi Seki, Hideo Maruyama, Yasuhiro Shoji
    BIOCHEMICAL ENGINEERING JOURNAL 51 (1-2) 14 - 18 1369-703X 2010/08 [Refereed][Not invited]
     
    A novel bioflocculant, methylated soy protein (MeSP), has been developed and its flocculation performance was tested with diatomite suspensions in freshwater (pH 2-11) and in seawater. The flocculation performance of MeSP was much higher than that of commercial polyaluminum chloride (PAC) in terms of supernatant clarity and floc settling velocity. In freshwater and at a fixed flocculant dosage of 60 ppm, MeSP could reduce the relative absorbance to 0.1 within 1 min over a wide pH range (pH 3-10), while PAC was effective only at around pH 5. In seawater (pH 8), there was a striking difference in flocculation performance between MeSP and PAC. MeSP (20-50 ppm) could reduce the relative absorbance to less than 0.1, while PAC was ineffective. The settling velocity of the floc formed by MeSP in freshwater at pH 7 and in seawater was about 4 mm/s. MeSP was applied to the flocculation of a real wastewater generated from an andesite quarry. The relative absorbance could be reduced to less than 0.05 by the addition of 40 ppm of MeSP. The floc settling velocity was about 5 mm/s. (C) 2010 Elsevier BY. All rights reserved.
  • Biosorption of Cd2+, Pb2+ onto Laminaria japonica
    Xiao, J, Miyamoto, C, Yu, K, Seki, H, Maruyama, H, He, P
    Environmental Chemistry 29 (2) 226 - 230 2010 [Refereed][Not invited]
  • Hideo Maruyama, Hideshi Seki, Akira Suzuki
    CHEMICAL ENGINEERING JOURNAL 155 (1-2) 49 - 54 1385-8947 2009/12 [Refereed][Not invited]
     
    The removal of blue-green algae by dispersed gas flotation was conducted. Methylated ovalbumin (MeOA) was used as frother and flocculant, which is a biodegradable substance. The continuous flotation experiments were conducted at different feed mass flow rate of the blue-green algae cells and MeOA. The operating variables were the mass flow rate of blue-green algae cell and MeOA, the initial concentration of the cells and MeOA, and superficial gas velocity. The results showed that the mass flow rate of MeOA was the most dominant variable affected by the removal efficiency and that the removal efficiency achieved ca. 0.85 when a ratio of the mass flow rate of MeOA and that of the cells was over 0.3. A proposed flotation model considering the adsorptions of MeOA to the cells, MeOA to bubble surface and the cells bearing with MeOA to bubble surface was applied to explain the experimental removal efficiency. The experimental and the calculated removal efficiency were within error 19%, indicating that the proposed model was valid fundamentally. (C) 2009 Elsevier B.V. All rights reserved.
  • Hideo Maruyama, Yuhsuke Tada, Hideshi Seki
    ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING 4 (2) 211 - 217 1932-2143 2009/03 [Refereed][Not invited]
     
    To clarify oil-in-water (o/w) emulsion, flotation experiments were conducted by adding methylated milk casein (MeCS), which is a biodegradable flocculant. Emulsion used in this study was prepared by ultrasonic emulsification of heavy oil (bunker-A) and sodium dodecyl Sulfate (SDS) solution. It was found that addition of MeCS enhanced clarification of oil droplets from o/w emulsion solution due to floc formation by adding MeCS. An optimum dosage of MeCS to form effective floc was determined by the relative turbidity in a clarification experiment. In flotation experiments, clarification ability was evaluated by removal rate constant, k, obtained by fitting of turbidity data to a pseudo-first-order kinetic equation. In case of varying dosage of MeCS and keeping superficial gas velocity, U(g), at constant value (5.48 x 10(-2) cm/s), removal rate was greatly influenced by amount of MeCS dosage. The maximum value of k was also obtained at the most optimum dosage of MeCS, and k decreased with adding lesser or larger amount of MeCS than the optimum dosage. On the other hand, in case of keeping the dosage of MeCS at the optimum dosage, and varying superficial gas velocity, up to U, < ca. 0.2 cm/s, k was increased with increasing superficial gas velocity, and increase in removal rate of oil droplets was mostly proportional with increase in bubble surface area production rate. (c) 2009 Curtin University of Technology and John Wiley & Sons, Ltd.
  • Hideshi Seki, Eri Hirai, Yasuhiro Shoji, Hideo Maruyama
    Kagaku Kogaku Ronbunshu 35 (1) 66 - 69 0386-216X 2009 [Refereed][Not invited]
     
    A biodegradable flocculant or bioflocculant was prepared from hen egg white protein. Egg albumin was ethyl-esterified in a 0.1M HCl ethyl alcohol solution at room temperature. Ethyl-esterified egg albumin (EtOA), having an esterification degree of 84%, was applied to the flocculation of diatomite. The flocculating ability of EtOA was evaluated by a clarification test and the sedimentation balance method. The diatomite suspension was effectively flocculated by the addition of small amount of EtOA (1 wt% of the diatomite weight), and the flocculating ability of EtOA was higher than that of poly aluminum chloride at pH 4 to 10. The settling velocity of diatomite floc at the appropriate MeCS dosage (1-2 wt%) was about 0.005m· s-1 at pH < 7, and it decreased to 0.003m· s-1 at pH > 7. © 2009 The Society of Chemical Engineers, Japan.
  • Hideo Maruyama, Hideshi Seki, Yasuhiro Matsukawa, Akira Suzuki, Norio Inoue
    CHEMICAL ENGINEERING JOURNAL 141 (1-3) 112 - 118 1385-8947 2008/07 [Refereed][Not invited]
     
    To clarify adsorption-equilibrium relationship at liquid-atmosphere interface, adsorption behavior of bisphenol-A (BPA) and diethyl phthalate (DEP) onto bubble surface was studied by using nonfoaming adsorptive bubble separation (NFBS) technique. The adsorption isotherms of BPA and DEP were obtained experimentally. The experimental results showed that adsorption equilibrium of BPA and DEP on bubble surface followed Langmuir's adsorption isotherm. Two adsorption parameters, the adsorption equilibrium constant and the saturated adsorption density on bubble surface could be determined and were 2.04 x 10(5) cm(3)/g and 1.35 x 10(-8) g/cm(2) for BPA and 9.41 x 10(4) cm(3)/g and 1.79 x 10(-8) g/cm(2) for DEP, respectively. (C) 2007 Elsevier B.V. All rights reserved.
  • Hideo Maruyama, Hideshi Seki, Akira Suzuki, Norio Inoue
    WATER RESEARCH 41 (3) 710 - 718 0043-1354 2007/02 [Refereed][Not invited]
     
    Removal of protein dissolved in water by batch foam separation was conducted with using ovalbumin (OA) as a model protein in the light of wastewater treatment reducing organic loading. The removal efficiency had a maximum value near the i.e.p. of CIA (pH 4.6); thus, most experiments were conducted at pH 4.6. Typical experimental conditions; superficial gas velocity, U-g: 1.97 x 10(-2) -5.37 x 10(-2) cm/s; initial bulk concentration of OA, C-i: ca. 0.05-0.25 g/L; liquid volume, V: 600 cm(3). A model estimating bulk concentration profile was proposed by taking into account a mass balance of the present system. The model predicted that OA could be removed perfectly, however, was not all removed experimentally. The residual OA concentration of the bulk liquid within the column reached plateau value, which correspond to ca. 18% of the initial OA concentration. The plateau value of the bulk concentration was attained for ca. 100-500 min with U-g = 1.97 x 10(-2) -5.37 x 10(-2) cm/s. Foaming ability test revealed that the foaming limit concentration of OA at pH 4.6 was 9.72 x 10(-3) g/L. These results suggested that OA molecules could be damaged by interaction of bubble surface in the dispersed phase, since there were the residual OA concentrations over the limit concentration. To take account of this phenomena and correct the model, average surface density, X-d, which should convert protein molecule into the denatured protein molecule, was introduced. The corrected model could explain well the time profile of OA bulk concentration. (c) 2006 Elsevier Ltd. All rights reserved.
  • Hideo Maruyama, Hideshi Seki, Yasuhiro Matsukawa, Akira Suzuki, Norio Inoue
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 45 (18) 6383 - 6386 0888-5885 2006/08 [Refereed][Not invited]
     
    An ultrasonic atomization technique was applied to remove endocrine disruptor chemicals (EDCs) from an aqueous environment. Bisphenol-A (BPA) and diethyl phthalate (DEP) were used as model EDCs. BPA or DEP could be transferred from the bulk liquid to the collected droplet liquid using this technique. Removal experiments were conducted, and the results showed that the removal efficiency was dependent on the initial concentration of EDCs. This technique was potentially effective to remove EDCs in the lower-concentration region (less than ca. 5.0 x 10(-5) M). On the other hand, from the viewpoint of enrichment, the both plateau level and the increase region of the enrichment ratio could be observed experimentally, which was expected in our previous study [Suzuki et al., Ind. Eng. Chem. Res. 2006, 45, 830]. This fact suggests that our proposed enrichment mechanism via this technique is valid.
  • H Maruyama, H Seki, A Suzuki, N Inoue
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 299 (1) 416 - 420 0021-9797 2006/07 [Refereed][Not invited]
     
    The adsorption of ovalbumin (OA) onto the bubble surfaces was studied with various pHs (3.5, 4.6, 6.0 and 8.0) by a continuous foam separation technique. From the value of the saturated surface density of adsorbed OA, the variation of effective diameter (D) of an OA molecule on the bubble surface was estimated for various pHs (3.5, 4.6, 6.0 and 8.0) of the OA solutions, assuming that the cross section of the OA molecules be circular and that the OA molecules adsorb on the bubble surface in a closest packing structure. The estimated variation of D with pH was attempted to explain based on a model modified from that proposed by Pujar and Zydney [N.S. Pujar, A.L. Zydney, J. Chromatoar. A 796 (1998) 229-238]. The modified model could well reproduce the variation of the effective diameter with pH; the values of D calculated on the basis of the modified model almost agreed with that estimated from the saturated surface density in the present experimental pH range. From these, conclusion was drawn that the modified model presented in this study can express the variation in the effective diameter with pH. (c) 2006 Elsevier Inc. All rights reserved.
  • Hideo Maruyama, Akira Suzuki, Hideshi Seki, Norio Inoue
    BIOCHEMICAL ENGINEERING JOURNAL 30 (3) 253 - 259 1369-703X 2006/06 [Refereed][Not invited]
     
    Estimation of overhead production enrichment in continuous foam separation was conducted with a surfactant: sodium n-dodecylbenzenesulfonate (SDBS) and soluble proteins: ovalbumin (OA) and hemoglobin (HB). Axial profiles of the volumetric flow rate and the concentration of the collapsed foam liquid within the column were measured, and the enrichment ratio and the liquid holdup in axial direction were determined experimentally. The proposed model was fitted to the experimental results obtained with various experimental conditions (superficial gas velocity, feed concentration and pH) and was in reasonable agreement with the experimental data by using the least square regression. The present model makes it possible to estimate the foamate concentration at a desired foam height. (c) 2006 Elsevier B.V. All rights reserved.
  • H Maruyama, A Suzuki, H Seki, N Inoue
    BIOCHEMICAL ENGINEERING JOURNAL 29 (3) 278 - 283 1369-703X 2006/04 [Refereed][Not invited]
     
    A rapid and simple technique (microthermometry) was developed for the measurement of microbe's metabolic activities and its inactivation process by an inhibitor. To analyze the results and to determine the parameters for the estimation of the activity and inactivation degree, a simple model was proposed. Yeast cells (Saccharomyces cerevisiae) were used as a microbe. A differential method using two bead-type thermistors; as reference and measuring probes was employed for the detection of a temperature change caused by the heat of metabolism of added carbon source (glucose) by the yeast. Experiments were conducted in a 30 degrees C water bath under non-growth conditions (without nitrogen source). The simple thermal response model was applied to obtain two characteristic parameters for the estimation of the yeast activities, i.e.. a metabolic heat production rate, Delta Q, and a metabolic heat inhibition rate, Delta K. The proposed model was well in agreement with the experimental results, and the curve fitting gave Delta Q or Delta K. In the case of the addition of glucose to yeast as a carbon source, Delta Q was proportional to the number of live cell (CFU). The slope of CFU versus Delta Q for yeast in exponential phase was larger by about two-fold than that in the stationary phase. In the case of the addition of gultaraldehyde as an inhibitor to the above system, the logarithmic value of Delta K increased with increasing the concentration of gultaraldehyde within the range of 0.02-6.2 wt.%. It was suggested that the two model parameters, Delta Q and Delta K, can be regarded as characteristics, to estimate the activities of bacteria and the degree of their inactivation by the inhibitor. (c) 2006 Elsevier B.V. All rights reserved.
  • A Suzuki, H Maruyama, H Seki, Kashiki, I, N Inoue
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 45 (3) 1123 - 1127 0888-5885 2006/02 [Refereed][Not invited]
     
    A new, simple model for flocculation of suspended particles was proposed taking into account the bridging between a flocculant-adsorbed surface on a particle and a bare surface on another particle. Experimental data on the adsorption of flocculants onto particles were fitted to a Langmuir-type adsorption isotherm, and two adsorption parameters were obtained by the fitting. Flocculation experiments were conducted for quartz suspensions with two types of polymer flocculants that had been developed in our previous studies. The flocculation efficiency of the flocculant was evaluated by turbidimetry. An attempt was made to apply the proposed model to the experimental flocculation efficiency, and it was shown that the model can well explain the experimental results. As a result, it was revealed that one of the model parameters, alpha, plays the most important role in flocculation phenomena, and it gives the fraction of particles surface covered by flocculant at an optimum flocculation.
  • A Suzuki, H Maruyama, H Seki, Y Matsukawa, N Inoue
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 45 (2) 830 - 833 0888-5885 2006/01 [Refereed][Not invited]
     
    Dilute aqueous solutions of two amino acids, tryptophan (Trp) and phenylaramine (Phe), were atomized ultrasonically, and it was found that the amino acids were enriched in the collected mist droplets. The enrichment ratio increased with decreasing initial concentration of amino acids. An enrichment model was proposed and was verified with experimental results. The mechanism is analogous to that of nonfoaming adsorptive bubble separation (NFBS) reported previously. The model explained well the experimental results, and the specific surface area of the mist droplets was estimated. In the case of ultrasonic atomization, the estimated specific surface areas for both Trp and Phe were larger than those of NFBS. This suggests that smaller droplets will be formed by ultrasonic atomization. The present method will be available to separate gas-liquid interfaces where surface-active substances adsorb and to enrich them from dilute aqueous solution.
  • 鈴木 翼, 吉田 珠江, 関 秀司, 丸山 英男
    化学工学論文集 32 (1) 66 - 71 2006 [Refereed][Not invited]
  • SEKI Hideshi, OKADA Itaru, MARUYAMA Hideo, KAWABE Masao, NAKADE Akihito
    Aquaculture Science 日本水産増殖学会 54 (4) 449 - 453 0371-4217 2006 [Refereed][Not invited]
     
    A new method (competitive adsorption method) for the removal of Cd from squid liver was proposed. In this method, the same weight of squid liver and citric acid solution were mixed with a cation-chelating resin for 24 h under weak acidic condition. The Cd concentration of the mixture was lowered from 12 ppm to 0.1 ppm by the addition of 10 wt-% of cation-chelating resin relative to the wet-weight of squid liver at about pH 4. The Cd adsorption behaviors of squid liver and cation-chelating resin were well explained by a bidentate binding model. The adsorption process of Cd onto cation-chelating resin was the rate-limiting process of competitive adsorption method.
  • 関 秀司, 于 克鋒, 丸山 英男, 鈴木 翼
    化学工学論文集 35 (5) 449 - 413 2006 [Refereed][Not invited]
  • H Seki, A Suzuki, H Maruyama
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 281 (2) 261 - 266 0021-9797 2005/01 [Refereed][Not invited]
     
    Yeast biomass was methylated in a 0.1 M HCl methyl alcohol solution at room temperature and the methylated yeast (MeYE) was applied to the adsorptive separation of Cr(VI) and As(V) anions from aqueous solutions. At near-neutral pH, while Cr(VI) and As(V) anions were scarcely adsorbed onto unmethylated yeast biomass, the amounts adsorbed increased with increasing methylation degree. The amount of Cr(VI) adsorbed onto MeYE was almost constant at pH 4-6 and decreased with increasing pH above pH 6. The amount of As(V) adsorbed onto MeYE was rather lower than that of Cr(VI) and it had a peak at about pH 7. A metal-binding model was used to describe the adsorption characteristics of Cr(VI) and As(V) on MeYE. The results showed that MeYE has two different types of adsorption sites. The saturated amount of Cr(VI) and As(V) adsorbed onto MeYE having methylation degree 0.94 was 0.55 mmol g(-1). (C) 2004 Elsevier Inc. All rights reserved.
  • SEKI Hideshi, SUZUKI Akira, KUSHIBIKI Rie, MARUYAMA Hideo
    Aquaculture Science 日本水産増殖学会 53 (1) 41 - 46 0371-4217 2005 [Refereed][Not invited]
     
    A fundamental study of the continuous foam separation of uneaten fish feed with a new biodegradable surfactant, methylated egg albumin (MeOA), was carried out. Pulverized fish feed particles with a mean diameter of 0.1 mm was used as a model system in this study. Continuous foam separation experiments were conducted at different mass flow rates of the feed particles, MeOA, and bubble surface production rates. A continuous foam separation model considering the adsorption of McOA and the feed particles to bubble surfaces was applied to explain the experimental results. The experimentally determined fractional removal of the feed particles agreed well with the values predicted by the model. The result showed that the fractional removal of feed particles can be predicted by the model with four basic operational parameters; mass flow rates of the feed particles and MeOA, bubble surface production rate, and volumetric flow rate of the water drained.
  • H Seki, A Suzuki, H Maruyama
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 270 (2) 304 - 308 0021-9797 2004/02 [Refereed][Not invited]
     
    A new biosorbent, methylated yeast (MeYE), was prepared for the adsorptive separation of proteins from aqueous solutions. Yeast was methylated in a 0.1 M HCl methyl alcohol solution at room temperature. About 80% of the carboxylic groups of yeast could be methylated within 9 It. The adsorption of egg albumin onto MeYE was studied to evaluate the protein adsorption ability of MeYE. At near neutral pH, egg albumin was scarcely adsorbed onto unmethylated yeast and the adsorbed amount of egg albumin increased with increasing methylation degree. The amount of egg albumin adsorbed onto MeYE increased with increasing pH from 4 to 7 and steeply decreased above pH 7. The Langmuir isotherm was applied to determine the apparent adsorption constant and the saturated adsorbed amount of egg albumin on MeYE. Both the apparent adsorption constant and the saturated adsorbed amount increased with the degree of methylation. The saturated adsorbed amount of egg albumin onto MeYE having methylation degree 77% was 8.41 x 10(-6) mol g(-1) or 0.378 g g(-1) at near neutral pH. (C) 2003 Elsevier Inc. All rights reserved.
  • H Seki, A Suzuki, M Shinguh, H Maruyama
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 270 (2) 359 - 363 0021-9797 2004/02 [Refereed][Not invited]
     
    A new biodegradable flocculant was prepared from a common and inexpensive protein. Milk casein was methylated in a 0.05 M HCl methyl alcohol solution at room temperature. The methylated milk casein (MeCS), having a methylation degree of 81 %, was applied to the separation or flocculation of diatomite in seawater (pH 8.1 +/- 0.1) at room temperature (18-23 degreesC). The flocculating ability of MeCS was evaluated by a sedimentation balance method (cumulative measurement method). The diatomite suspension was effectively flocculated by the addition of a small amount of MeCS (0.25 wt% of the diatomite weight). The results of sedimentation analysis showed that the size-frequency curve had a very sharp and high peak; thus the diatomite floc formed by MeCS had a rather uniform size. The settling velocity of diatomite floc at the appropriate MeCS dosages (0.25-2 wt% of diatomite) was about 3 x 10(-3) m s(-1). (C) 2003 Elsevier Inc. All rights reserved.
  • A Suzuki, K Yasuhara, H Seki, H Maruyama
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 253 (2) 402 - 408 0021-9797 2002/09 [Refereed][Not invited]
     
    A fundamental study about the selective foam separation of protein mixture was carried out. A solution containing two proteins, ovalbumin (OA) and lysozyme (LZ), and an anionic surfactant, sodium dodecyl sulfate (SDS), was adjusted to pH 6.0, which referred to an intermediate state between the isoelectric points of the proteins. The solution was processed by continuous foam separation. The results showed that a proper addition of SDS greatly improved the selective recovery of LZ to OA. The experimental data were well explained by a simple model that most of cationic protein molecules (LZ) are associated with SDS and the adsorption of all the species including LZ-SDS complexes are subjected to Langmuir adsorption isotherm. The results also showed that one of the Langmuir parameters, which means a kind of lyophillic property of adsorbed material, of LZ-SDS complexes was extremely large as compared with that of primary protein. (C) 2002 Elsevier Science (USA).
  • A Suzuki, H Maruyama
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 238 (1) 54 - 61 0021-9797 2001/06 [Refereed][Not invited]
     
    The influence of the liquid properties and the operating variables on the intrinsic volumetric flow rate, q(0), of the droplets at the liquid-atmosphere interface in nonfoaming adsorptive bubble separation and that, W-m, of the liquid in foam at the liquid-foam interface in foam separation was studied to estimate the enrichment ratio of surface-active substance in the two techniques. Each intrinsic flow rate was determined by the extrapolation method, which the authors proposed previously, and was mainly influenced by superficial gas velocity, liquid viscosity, and surface tension. Although the changes in the surface tension and the liquid viscosity were small, they greatly affected the intrinsic how rates for both the droplets and the liquid in foam. The experimental results were applied to a dimensional analysis. Dimensionless volumetric how rates, q(0)/Q and W-f0/Q, were successfully correlated with a dimensionless number (Ohnesorge number, Z = mu (L)/(rho (L)sigmad(b))(0.5)).q(0)/Q = 6.66 Z(1.46) and W-f0/Q = 2.53Z (0.533) were obtained for the nonfoaming and the foaming regions within errors of 30 and 35%, respectively. The enrichment ratio of surface-active substance in the droplets and the liquid in foam to the bulk liquid was derived by using these correlations for the nonfoaming and the foaming regions, respectively A good agreement of the experimental enrichment ratio and the calculated ones was obtained by using the correlations for nonfoaming and foaming. (C) 2001 Academic Press.
  • H Maruyama, A Suzuki, H Seki
    JOURNAL OF COLLOID AND INTERFACE SCIENCE 224 (1) 76 - 83 0021-9797 2000/04 [Refereed][Not invited]
     
    The mechanism of water-soluble protein enrichment in continuous foam separation was studied. The liquid flow rate and the protein concentration in the foam phase were measured at various heights from the interface between the bulk liquid and foam layer, and the intrinsic values at the interface were estimated by the extrapolation method to determine the accurate adsorption density on the bubble surface, Ovalbumin (OA) and hemoglobin (HB) were used as the soluble proteins. The solution pH values were varied from 3.5 to 6.0 for OA and from 6.0 to 8.0 for HE. The experimental isotherms for OA and HE were compared to the Langmuir isotherm, and the two adsorption parameters of the equilibrium constant, K, and the saturated density, gamma, at each pH were determined. Both gamma values obtained for OA and HE showed maxima at their isoelectric point (pH 4.6 for OA and pH 6.8 for HB). Assuming that OA and HE molecules are spherical in shape and are adsorbed on the bubble surface in a close-packed structure at saturation, the calculated diameters for OA and HE molecules were quite similar to the literature values. The variation in gamma for both OA and HE is discussed qualitatively in relation to the net charge of the protein molecule. (C) 2000 Academic Press.
  • A Suzuki, H Maruyama, H Seki
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 29 (5) 794 - 798 0021-9592 1996/10 [Refereed][Not invited]
     
    The adsorption behavior of organic substances onto bubble surface in nonfoaming bubble separation was investigated. Experiments were conducted with a bubble column equipped with a droplet collector or a trap at its top. Crystal violet (CV) and humic acid (HA) were used as examples of surface-active substances. The amount adsorbed onto the bubble surface was calculated through the mass balance in the bubble column. Two adsorption parameters, equilibrium constant, K, and saturated surface density on bubble surface, gamma, were determined for CV and HA, respectively, by fitting of the experimental results to a Langmuir-type isotherm. Using the value of K, gamma and the intrinsic volumetric flow rate of droplets at the liquid-atmosphere interface, the variation of enriching ratio, E, with concentration of the solution was estimated and compared to the experimental results. The calculated E was in good accordance with the experimental ones for both CV and HA.
  • A SUZUKI, H MARUYAMA, H SEKI, T HAYASHI
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 28 (1) 115 - 117 0021-9592 1995/02 [Refereed][Not invited]
  • A SUZUKI, H SEKI, H MARUYAMA
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 27 (4) 505 - 511 0021-9592 1994/08 [Refereed][Not invited]
     
    Equilibrium adsorption behavior of divalent metal ions onto hydrous titanium (IV) oxide (HTO) was studied. A general equilibrium adsorption equation was derived from three simultaneous equilibrium reactions: (1) hydrolysis of metal ions to the hydroxides, (2) deprotonation of hydroxyl groups (adsorption sites) on HTO's surface and (3) complexation of the hydroxides with the deprotonated sites. The theoretical equilibrium adsorption equation was confirmed by several experimental results under acidic or basic conditions using uranium, lead, cadmium and zinc ions as the adsorbates. It is demonstrated that two parameters within the equation provide information about the adsorption capacity and the selectivity of adsorbent for target metal ions. The HTO employed here had available sites of 7.15 x 10(-4) mol-g-1 for all experiments. Metal ions were adsorbed preferentially on the HTO in the following sequence: Zn2+ < Cd2+ < Pb2+ < UO22+.
  • ＰＶＡ固定化チタン酸によるウラン捕集に関する基礎的研究
    関 秀司, 鈴木 翼, 丸山 英男
    北大水産彙報 44 (4) 147 - 157 1993 [Not refereed][Not invited]
  • 連続泡沫分離操作における泡沫層の脱水過程
    丸山 英男, 鈴木 翼, 関 秀司
    北大水産彙報 44 (4) 238 - 246 1993 [Not refereed][Not invited]
  • 粒子トラップを取り付けた気泡塔による有機懸濁粒子の分離
    丸山 英男, 関 秀司, 鈴木 翼, 酒井 信
    北大水産彙報 43 (4) 153 - 161 1992 [Not refereed][Not invited]
  • アルギン酸固定化フミン酸膜への鉛イオン吸着に関する研究
    関 秀司, 鈴木 翼, 丸山 英男
    北大水産彙報 42 (4) 46 - 57 1991 [Not refereed][Not invited]

Conference Activities & Talks

  • Recovery of milk whey proteins by foam separation  [Not invited]
    Maruyama, H, Seki, H
    the 3rd International Symposium on Multiscale Multiphase Process Engineering  2017/05
  • 水溶性タンパク質の泡沫分離における平衡残留濃度  [Not invited]
    丸山 英男, 鈴木 翼
    化学工学会室蘭大会, C211  1991
  • 泡沫分離による水溶性タンパク質の除去  [Not invited]
    丸山 英男, 関 秀司, 鈴木 翼
    化学工学会第23回秋季大会要旨集  1990/09
  • 含水チタン酸のウラン吸着性能に与えるゲル調製条件の影響について  [Not invited]
    丸山 英男, 関 秀司, 鈴木 翼
    化学工学会第22回秋季大会要旨集  1989/09

Works

  • Course introduction of Physical Chemistry lecture (undergraduate specialization)
    Hideo Maruyama 2021/02
  • Course introduction of Laboratory work of analytical chemistry (undergraduate specialization)
    Hideo Maruayma 2021/02
  • Effective utilization and application for separation operation of marine biomass: Flocculation ability of alginate-protamine complex flocculant (English version)
    Hideo Maruyama 2021/01
  • Effective utilization and application for separation operation of marine biomass: Flocculation ability of alginate-protamine complex flocculant
    Hideo Maruyama 2021/01

Research Grants & Projects

  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1997 -1998 
    Author : 丸山 英男
     
    2本のビード型サーミスタ(B定数4,132K,100kΩ(25℃))を使用した差動方式による生菌数測定を行った.昨年度の結果よりこの方式によって回分式で約0.005℃の変化まで測定可能であった.昨年度に引き続きモデル微生物として大腸菌(Echerichia coli DH1),乳酸菌(Leuconostoc mesenteroides IFO3832)および酵母(Saccharomyces cerevisiae IFO2043)の3種類を使用した.連続式測定への応用のために,500mL三角フラスコ内で培養した菌体培養液を自作の測定用カラムと流路を取り付けた自作の容器に入れて液定量ポンプでその培養液を系内で循環させた.カラム容量は約10mLで入り口部とカラム内の出口付近にサーミスタを取り付け,カラムほぼ中央に基質注入口を取り付けたものを用いた.基質としては20g/Lグルコース溶液1mLを加えた.実験は全て30℃恒温水槽内で測定を行った.液循環体積速度を0.05〜0.5mL毎秒の範囲で変化させることによって,測定カラム内の平均液滞留時間を200〜20秒に変化させて実験を行った.この実験範囲では乳酸菌の発熱による温度変化は菌数を変化させてもほとんど得ることが出来なかった.これは基本的に乳酸菌の発熱量が酵母などと比較して非常に低いことが理由である.大腸菌を用いて滞留時間200秒で測定した場合,回分式で観測されたパルス型の温度変化はその時間および応答ともに20g-drycell/L以下の範囲で非常に小さく観測されたがばらつきが非常に大きく生菌数との明瞭な比例関係は得られなかった.同様に酵母を用いて滞留時間200秒で測定した場合,菌体濃度20〜40g-drycell/Lでパルス上の温度変化が観測されたが,感度の点では回分式よりも非常に劣った.今回行った実験範囲では菌体濃度を回分式の時よりも高濃度にしなければならなかった.
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1994 -1994 
    Author : 丸山 英男
     
    水産加工工程において魚介類から溶出する水溶性タンパク質の中で代表的なタンパク質は主に魚肉中のアルブミン類と血液に含まれているヘモグロビン類であるので,モデルタンパク質として水溶性タンパク質として卵白アルブミン(以下,OAと略する)および牛血清ヘモグロビン(以下,HBと略する)を用いた。泡沫分離装置として標準型気泡塔を用い,気液流通式で,OAについてはpH3.5,4.6(等電点)および6.0,または,HBについてはpH6.0,6.8(等電点)および8.0において泡沫分離実験を行なった。水溶性タンパク質の気液界面吸着はラングミュア型の吸着平衡関係にしたがうとの仮定から導いた泡沫分離過程モデルによって実験データを整理したところ,OAのpH3.5および6.0,および,HBの上記のpH範囲において,過去の研究で明らかにしたOAの等電点であるpH4.6同様に本研究で提起したモデルによくしたがい,ラングミュア型の吸着平衡関係であることがわかった。また,本モデルから決定した吸着パラメタである気泡表面飽和吸着量は,OAおよびHBともに等電点で最大を示し,酸およびアルカリ側で減少していた。これは気泡表面に吸着したタンパク質は等電点で静電気的に中性となるために,隣接する分子間の静電気的反発力が小さくなっているか,タンパク質分子が他のpHと比較して小さくなっていることが原因と考えられる。気泡層内での濃縮を明らかとするために,気泡塔内生成単位気泡表面積当たりの泡沫層に同伴される塔内液流量は本研究で行なった操作条件において無次元数であるオ-ネゾルゲ数で誤差30%以内で相関することができ,塔内平衡液濃度,約2×10^<-4>g/cm^3以下の濃度範囲で濃縮率が急激に増加することがわかった。泡沫液流量の鉛直方向分布は泡沫高さの上昇と共に指数関数的に急激に減少しており,塔内で発生した気泡表面積は泡沫層内でも維持されるとの仮定から吸着パラメタ及び上述の相関式を用いて泡沫層内濃縮率予測式を導いた。この式により,塔内平衡液濃度,約1×10^<-4>g/cm^3以上の濃度範囲では泡沫層内でも気泡表面積はほとんど維持されていることがわかった。

Educational Activities

Teaching Experience

  • Chemical EngineeringChemical Engineering Hokkaido University, Department of Fisheries
  • Biochemical Process EngineeringBiochemical Process Engineering Hokkaido University, Department of Fisheries
  • Laboratory work of Biochemical EngineeringLaboratory work of Biochemical Engineering Hokkaido University, Department of Fisheries
  • Environment and People
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 全学教育
    キーワード : 生物資源，資源利用，機能性，マリンバイオマス，環境保全，マリンバイオテクノロジー，有効利用，高度利用，ゼロエミッション，SDGs
  • Enzymology
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : 酵素、タンパク質、基質特異性、反応速度論、酵素阻害、分離・精製、一次構造解析、産業用酵素
  • Practice of Marine Bioprocess Engineering
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : 食品製造，食品加工，食品保蔵，化学工学，分離・精製，物質収支，成分分析
  • Study and Training of Marine Research Diving
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : スクーバダイビング、潜水調査、スノーケリング、水上安全法
  • Physical Chemistry
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : 状態方程式，気体分子運動論，熱力学第一法則，エントロピー，熱力学第二法則，化学ポテンシャル，相平衡，化学反応速度，化学平衡
  • Laboratory Work on Analytical Chemistry
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : 化学実験の基礎と注意，検度，定量分析，重量分析，容量分析，吸光光度法

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