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2005 Fiscal Year Final Research Report Summary

Development of bioremediation and biorefinery process for rare metal using metal-oxoanion reducing and accumulating bacteria

Research Project

Project/Area Number 15310056
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental technology/Environmental materials
Research InstitutionOsaka University

Principal Investigator

IKE Michihiko  Osaka University, Gradate School of Engineering, Professor, 大学院・工学研究科, 教授 (40222856)

Co-Investigator(Kenkyū-buntansha) YAMASHITA Mitsuo  Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (40220347)
SEI Kazunari  Osaka University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 助手 (80324177)
Project Period (FY) 2003 – 2005
Keywordsrare metal / wastewater treatment / soil purification / selenium / arsenicum / dissimilatory reduction / Bacillus sp.SF-1
Research Abstract

For the prevention of environmental pollution by and exhaustion of rare metals which are increasingly consumed in high-tech industries, novel rare metal reducing and accumulating bacteria were screened and applied to rare metal removal/recovery processes.
In the first year, selenate containing wastewater treatment reactor was developed utilizing Bacillus sp.SF-1 which can reduce selenate to elemental selenium via selenate. Model wastewater containing 1-2 mM selenate could be treated with less than 1 day of the hydraulic retention time, and elemental selenium was completely removed and recovered when combining with simple coagulation sedimentation or ultrafiltration.
In the second year, arsenate reduction ability of Bacillus sp.SF-1 was characterized in detail and the feasibility of the bioremediation process for arsenate contaminated soil utilizing Bacillus sp.SF-1 was evaluated. Bacillus sp.SF-1 could utilize various carbon sources and did not require stringent anaerobic condition for s … More elenate reduction. These characteristics were remarkable benefit for the actual bioremediation process. In addition, Bacillus sp.SF-1 could reduce arsenate even selenate and/or nitrate were coexisting. Thus, it was implied that Bacillus sp.SF-1 has separate reductases which are individually induced by arsenate, selenate and nitrate.
In the final year, lab-scale slurry phase batch reactor experiment was performed. It was confirmed that both high-inoculum concentration of Bacillus sp.SF-1 and agitation were not needed. Therefore, continuous soil packed column reactor, which allows low cost treatment, was investigated to treat model arsenate contaminated soil. This reactor could purify the model arsenate contaminated soil (300 mg-As/kg-soil) to below a soil content standard of arsenate (150 mg-As/kg-soil) with hydraulic retention time of inoculum culture fluid at 1 day when combined with washing by phosphate buffer.
These results indicate the feasibility of the development of arsenate removal/recovery process utilizing metal-oxoanion reducing/accumulating bacteria. Less

  • Research Products

    (12 results)

All 2006 2005 2004 2003

All Journal Article (12 results)

  • [Journal Article] Reduction kinetics of As(V) to As(III) by a dissimilatory arsenate-reducing bacterium, Bacillus sp.SF-1.2006

    • Author(s)
      Soda, O.S., Yamamura, S., Zhou, H., Ike, M., Fujita,M.
    • Journal Title

      Biotechnology and Bioengineering Vol.93(No.4)

      Pages: 812-815

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reduction of As(V) to As(III) by a dissimilatory arsenate-reducing bacterium, Bacillus sp.SF-1.2006

    • Author(s)
      Soda, O.S., Yamamura, S., Zhou, H., Ike, M., Fujita, M.
    • Journal Title

      Biotechnology and Bioengineering 93-4

      Pages: 812-815

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Characterizing kinetics of transport and transformation of selenium in water-sediment microcosm free from selenium contamination using a simple mathematical model.2005

    • Author(s)
      Fujita, M., Ike, M., Hashimoto, R., Nakagawa, T., Yamaguchi, K., Soda,O.S.
    • Journal Title

      Chemosphere Vol.58(No.6)

      Pages: 705-714

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 金属酸化物の還元作用を利用したレアメタルの除去・無毒化2005

    • Author(s)
      池道彦
    • Journal Title

      水環境学会誌 Vol.28(No.2)

      Pages: 63-67

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Characterizing kinetics of transport and transformation of selenium in water-sediment microcosm free from selenium contamination using a simple mathematical model.2005

    • Author(s)
      Fujita, M., Ike, M., Hashimoto, R., Nakagawa, T., Yamaguchi, K., Soda, O.S.
    • Journal Title

      Chemosphere 58-6

      Pages: 705-714

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Removal and/or detoxification of rare metals utilizing microbial reduction of metal-oxoanions.2005

    • Author(s)
      Ike, M.
    • Journal Title

      Journal of Japan Society on Water Environment 28-2

      Pages: 63-67

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Bacillus SF-1株による金属酸化物還元作用とそのセレン排水処理およびヒ素汚染土壌浄化への応用2004

    • Author(s)
      池道彦, 藤田正憲
    • Journal Title

      水 Vol.46-11

      Pages: 18-22

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Characterization of arsenate-, selenate- and nitrate-reducing activities in Bacillus sp.SF-12004

    • Author(s)
      Yamamura, S., Terashi, S., Ike, M., Yamashita, M., Fujita,M.
    • Journal Title

      Japanese Journal of Water Treatment Biology Vol.40(No.4)

      Pages: 161-168

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Application of metal oxide reduction ability of Bacillus SF-1 for treatment of selenate containing wastewater and bioremediation of arsenate contaminated soil.2004

    • Author(s)
      Ike, M., Fujita, M.
    • Journal Title

      Water 46-11

      Pages: 18-22

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Characterization of arsenate-, selenate- and nitrate-reducing activities in Bacillus sp.SF-1.2004

    • Author(s)
      Yamamura, S., Terashi, S., Ike, M., Yamashita, M., Fujita, M.
    • Journal Title

      Japanese Journal of Water Treatment Biology 40-4

      Pages: 161-168

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dissimilatory arsenate reduction by a facultative anaerobe, Bacillus sp. strain SF-1.2003

    • Author(s)
      Yamamura, S., Ike, M., Fujita, M.
    • Journal Title

      Journal of Bioscience and Bioengineering Vol.96(No.5)

      Pages: 454-460

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Dissimilatory arsenate reduction by a facultative anaerobe, Bacillus sp.Strain SF-1.2003

    • Author(s)
      Yamamura, S., Ike, M., Fujita, M.
    • Journal Title

      Journal of Bioscience and Bioengineering 96-5

      Pages: 454-460

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2007-12-13  

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