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Control of buoyancy of algal bloom-forming blue-green alga Microcystis and its application to advanced removal

Research Project

Project/Area Number 18K04404
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionChiba University

Principal Investigator

Amano Yoshimasa  千葉大学, 大学院工学研究院, 助教 (40517976)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsアオコ / ミクロキスティス / 細胞外多糖類 (EPS) / カチオン / 群体形成 / 浮揚性 / 捕集除去 / 光照射 / 細胞外多糖類(EPS) / 細胞外多糖類 / 浮揚性制御
Outline of Final Research Achievements

This study developed the novel collection and removal method using buoyant ability of harmful algal blooms (Microcystis) occurred in eutrophic lakes. Controlling the amount of tightly-bound extracellular polysaccharides (TB-EPS), which contribute to colony formation of Microcystis, and cation in solution, we succeeded the promotion of Microcystis colony size expansion and buoyancy. Also, we successfully controlled the buoyancy depending the presence or absence of light irradiance, indicating the path to further research development for the construction of a method for collecting and removing algal blooms.

Academic Significance and Societal Importance of the Research Achievements

湖沼に発生するアオコ (ミクロキスティス)の除去には特殊な装置や薬剤の使用など,コスト高や環境負荷が課題となっていた。本課題は,ミクロキスティスが有する結合性細胞外多糖類 (TB-EPS)量を制御し,群体サイズの拡大によって浮揚性を向上させることに成功した学術的に特徴のある研究である。ミクロキスティスの群体形成および浮揚性能を利用するため,動力源を一切必要としない環境に負荷のかからない捕集除去手法として期待され,社会的にも意義のある研究である。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (18 results)

All 2021 2020 2019 2018 Other

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

  • [Int'l Joint Research] Tennessee Technological University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Tennessee Technological University(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] The effect of pH and light on the colony formation and buoyancy of Microcystis aeruginosa UTEX-20612021

    • Author(s)
      Kai Wei, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Water, Air, & Soil Pollution

      Volume: 232 Issue: 3

    • DOI

      10.1007/s11270-021-05066-7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A competitive growth model for the simulation of cyanobacterial blooms under eutrophic conditions2021

    • Author(s)
      Masato Chujo, Jingnan Li, Tania Datta, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Environmental Engineering Science

      Volume: 38 Issue: 1 Pages: 15-23

    • DOI

      10.1089/ees.2020.0056

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impacts of different extracellular polysaccharides on colony formation and buoyancy of Microcystis aeruginosa2020

    • Author(s)
      Kai Wei, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Annales de Limnologie - International Journal of Limnology

      Volume: 56 Pages: 28-28

    • DOI

      10.1051/limn/2020026

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Control of the buoyancy of Microcystis aeruginosa via colony formation induced by regulating extracellular polysaccharides and cationic ions2019

    • Author(s)
      Kai Wei, Sanghyeob Jung, Yoshimasa Amano, Motoi Machida
    • Journal Title

      SN Applied Sciences

      Volume: 1 Issue: 12 Pages: 1573-1573

    • DOI

      10.1007/s42452-019-1637-3

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Removal of Microcystis blooms using enhanced colony formation and buoyancy by controlling extracellular polysaccharides and cation concentrations2019

    • Author(s)
      Sakurai Shohei, Omori Ken, Amano Yoshimasa, Machida Motoi
    • Journal Title

      International Journal of Environmental Science and Technology

      Volume: - Issue: 8 Pages: 1-10

    • DOI

      10.1007/s13762-019-02289-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of different types of extracellular polysaccharides isolated from cyanobacterial blooms on the colony formation of unicellular Microcystis aeruginosa2018

    • Author(s)
      Omori Ken, Datta Tania, Amano Yoshimasa, Machida Motoi
    • Journal Title

      Environmental Science and Pollution Research

      Volume: 26 Issue: 4 Pages: 3741-3750

    • DOI

      10.1007/s11356-018-3892-z

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of Light and Potassium Ion on Buoyancy Regulation with Gas Vesicle in a Cyanobacterium Microcystis aeruginosa NIES-8432018

    • Author(s)
      Wei Kai, Amano Yoshimasa, Machida Motoi, Asukabe Hirohiko, Harada Ken-ichi
    • Journal Title

      Water, Air, & Soil Pollution

      Volume: 229 Issue: 11 Pages: 1-9

    • DOI

      10.1007/s11270-018-4010-z

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 光制限に基づくアオコ形成種 ミクロキスティスの浮揚性制御方法の検討2021

    • Author(s)
      高橋寛陽,天野佳正,町田基
    • Organizer
      化学工学会第86年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] アオコ形成種アナベナの発芽を促す底泥の微生物由来代謝物の影響評価2021

    • Author(s)
      成山雄基,天野佳正,町田基
    • Organizer
      化学工学会第86年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] アオコ原因種Microcystisから抽出した細胞外多糖類の成分分析および物性評価2020

    • Author(s)
      山田柾武,天野佳正,町田基
    • Organizer
      日本化学会第100春季年会(2020)
    • Related Report
      2019 Research-status Report
  • [Presentation] Removal of cyanobacteria from lake water using enhanced buoyancy caused by enlargement of colony size2019

    • Author(s)
      Yoshimasa Amano, Kai Wei, Shohei Sakurai, Masato Chujo, Motoi Machida
    • Organizer
      The 9th Indonesia-Japan Joint Scientific Symposium (IJJSS 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 有害藍藻類の群体形態制御によって変化する浮揚特性と新たなアオコ除去方法の構築2019

    • Author(s)
      櫻井翔平, 天野佳正, 町田基
    • Organizer
      化学工学会横浜大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Control of the buoyancy of Microcystis aeruginosa via colony formation induced by regulating the amount of extracellular polysaccharides and cationic ions2019

    • Author(s)
      Kai Wei, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2019)
    • Related Report
      2019 Research-status Report
  • [Presentation] 金属イオンおよびEPSの濃度制御によるミクロキスティの浮揚性を利用した除去法の検討2019

    • Author(s)
      鄭相協,天野佳正,町田基
    • Organizer
      化学工学会第84年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 異なる方法で抽出した有毒藍藻(Microcystis)由来の細胞外多糖類の成分組成と特性評価2018

    • Author(s)
      櫻井翔平,天野佳正,町田基
    • Organizer
      日本化学会第98回春季年会
    • Related Report
      2018 Research-status Report
  • [Remarks] 環境化学研究室のホームページ

    • URL

      http://chem.tf.chiba-u.jp/gacb15/index.html

    • Related Report
      2020 Annual Research Report 2019 Research-status Report 2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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