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Development on Effective Removal System of Radioactive Cesium adsorbed on Ocean Sludge by considering the Volume Reduction

Research Project

Project/Area Number 17K06969
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Naval and maritime engineering
Research InstitutionNihon University

Principal Investigator

OKAMOTO Kyoichi  日本大学, 理工学部, 研究員 (50256806)

Co-Investigator(Kenkyū-buntansha) 遠山 岳史  日本大学, 理工学部, 教授 (40318366)
小森谷 友絵  日本大学, 生産工学部, 准教授 (80409086)
平野 廣佑  和歌山工業高等専門学校, 環境都市工学科, 助教 (30758123)
Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords減容化 / 放射性セシウム / 循環型浄化システム / 微生物活性剤 / ファインバブル / 海洋工学 / 海洋保全 / 水質浄化
Outline of Final Research Achievements

Generally, it's impossible to remove the cesium absorbed on the sludge. It's possible to elute radioactive cesium by decomposition of the sludge. We had many experiments using Fine-bubble Purification System according to elute radioactive cesium by decomposition the sludge.
In this application, our object is to check the removal performance of cesium after the decomposition and elution of the sludge by using improved Fine-bubble Purification System, for ocean decontamination. From the experimental results we get more 83% adsorption rate except specific pH.

Academic Significance and Societal Importance of the Research Achievements

申請者らが以前提案したセシウム除去の方法は汚泥の分解で水中に溶出されたセシウムはゼオライトで固定可能とした.ここでゼオライトは理論上概略500g程度必要となるようであるが,本課題では,溶出したセシウムをシリカに再吸着させようという考えである.本方法では,60g程度のシリカ粉末で最低83%のセシウム吸着性能を有し,大幅な減容化が可能となることが分かった.また,pH=7.0程度とすればシリカ粉末へのセシウム吸着性能は十分であると考えられる.

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019 2018 2017

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (7 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] PURIFICATION EXPERIMENTS ON THE PASIG RIVER, PHILIPPINES USING A CIRCULATION-TYPE PURIFICATION SYSTEM2019

    • Author(s)
      OKAMOTO Kyoichi, KOMORIYA Tomoe, TOYAMA Takeshi, HIRANO Hirosuke, GARCIA Teodinis, BACCAY Melito, MACASILHIG Marjun, FORTALEZA Benedicto
    • Journal Title

      International Journal of GEOMATE

      Volume: Vol.16,Issue54 Issue: 54 Pages: 49-54

    • DOI

      10.21660/2019.54.4735

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PERFORMANCE OF A CIRCULATION TYPE PURIFICATION SYSTEM DURING THE REATMENT OF SLUDGE FROM MANILA BAY AND TWO PORTS IN JAPAN2019

    • Author(s)
      KOMORIYA Tomoe, OKAMOTO Kyoichi, TOYAMA Takeshi, HIRANO Hirosuke, GARCIA Teodinis, BACCAY Melito, MACASILHIG Marjun, FORTALEZA Benedicto
    • Journal Title

      International Journal of GEOMATE

      Volume: Vol.17,Issue59 Issue: 59 Pages: 51-56

    • DOI

      10.21660/2019.59.4736

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PURIFICATION EXPERIMENTS ON THE PASIG RIVER, PHILIPPINES USING A CIRCULATION-TYPE PURIFICATION SYSTEM2018

    • Author(s)
      OKAMOTO Kyoichi, KOMORIYA Tomoe, TOYAMA Takeshi, HIRANO Hirosuke,et.al.
    • Journal Title

      4th Int. Conf. on Science, Engineering & Environment (SEE)

      Volume: 1 Pages: 1016-1020

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PERFORMANCE OF A CIRCULATION TYPE PURIFICATION SYSTEM DURING THE TREATMENT OF SLUDGE FROM MANILA BAY AND TWO PORTS IN JAPAN2018

    • Author(s)
      OKAMOTO Kyoichi, KOMORIYA Tomoe, TOYAMA Takeshi, HIRANO Hirosuke,et.al.
    • Journal Title

      4th Int. Conf. on Science, Engineering & Environment (SEE)

      Volume: 1 Pages: 1021-1025

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] REMOVAL OF RADIOACTIVE CESIUM FROM OCEAN SULUDGE BY THE BACTERIUM USING PURIFICATION SYSTEM OF CIRCULATION TYPE2018

    • Author(s)
      小森谷友絵,岡本強一,遠山岳史
    • Journal Title

      International Journal of GEOMATE(Geotec., Const. Mat. & Env.)

      Volume: Vol.15,Issue47 Issue: 47 Pages: 53-57

    • DOI

      10.21660/2018.47.7256

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] EFFECT OF ADDITION OF BACTERIA ON THE DEVELOPMENT ON MOST SUITABLE REMOVAL METHOD OF RADIOACTIVE CESIUM ADSORBED ON OCEAN SLUDGE BY USING FINE BUBBLE AND ACTIVATING MICROORGANISMS2017

    • Author(s)
      岡本強一,小森谷友絵,遠山岳史
    • Journal Title

      Proceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering

      Volume: OMAE2017-62581 Pages: 1-5

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] COMPARISON OF PURIFICATION PERFORMANCE AGAINST OCEAN SLUDGE IN TWO SEA-AREA BY USING PURIFICATION SYSTEM OF CIRCULATION TYPE2017

    • Author(s)
      岡本強一,小森谷友絵,遠山岳史
    • Journal Title

      Proceedings of 6th International Conference on Civil Engineering

      Volume: 1 Pages: 1-6

    • Related Report
      2017 Research-status Report
  • [Journal Article] REMOVAL OF RADIOACTIVE CESIUM FROM OCEAN SULUDGE BY THE BACTERIUM USING PURIFICATION SYSTEM OF CIRCULATION TYPE2017

    • Author(s)
      小森谷友絵,岡本強一,遠山岳史
    • Journal Title

      Proceedings of International Conference on Geotechnique, Construction Materials and Environment

      Volume: Volume7(1) Pages: 770-774

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 堆積汚泥に吸着した放射性セシウムの減容化を 考慮した効率的除去法の開発2021

    • Author(s)
      岡本強一,小森谷友絵
    • Organizer
      日本船舶海洋工学会春季講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 堆積汚泥に吸着した放射性セシウムの減容化を考慮した効率的除去法2020

    • Author(s)
      平野廣佑,岡本強一,小森谷友絵,遠山岳史
    • Organizer
      日本水環境学会・年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 循環型浄化システムを用いた堆積汚泥に吸着した放射性セシウムの除去-最適凝集剤添加量の検討-2018

    • Author(s)
      野川大輔,岡本強一
    • Organizer
      日大理工・海洋建築工学科・日韓シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 循環型浄化システムにおける最適な活性剤投入時刻の検討2018

    • Author(s)
      上野橘平,立石翔太郎,野川大輔,中村隆浩,岡本強一
    • Organizer
      第62回日本大学理工学部学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 循環型浄化システムを用いた堆積汚泥に吸着した放射性セシウムの除染2017

    • Author(s)
      岡本強一,遠山岳史, 森谷友絵
    • Organizer
      環境放射能除染学会第6回研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] 循環型浄化システムを用いた微生物活性剤の適用による浄化性能の比較2017

    • Author(s)
      中村隆浩, 岡本強一
    • Organizer
      第61回日本大学理工学部学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Purification Performance of Sludge in Manila Bay by Purification System of Circulation Type2017

    • Author(s)
      Ogawa Ma.Richie C., 立石翔太郎, 岡本強一,Teodinis Garcia, Melito Baccay, Marjun Macasilhig, Benedicto Fortaleza
    • Organizer
      第61回日本大学理工学部学術講演会
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] 汚水処理装置2019

    • Inventor(s)
      岡本強一
    • Industrial Property Rights Holder
      岡本強一
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-104672
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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