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Development of novel water treatment process based on algal bloom removal

Research Project

Project/Area Number 21K04311
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, 准教授 (40517976)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsアオコ / ミクロキスティス / 細胞外多糖類 / カチオン / 群体形成 / 浮揚性制御 / 水処理技術 / 光照射
Outline of Research at the Start

本研究は,浄水処理に支障をきたすミクロキスティス(アオコ)の新規除去手法の開発を目指すものである。ミクロキスティスの細胞密度が低下する暗条件下,細胞外多糖類(Extracellular polysaccharides; EPS)と金属カチオン濃度制御により群体サイズを拡大させ,これによって向上する浮揚性を利用した浮揚除去手法を構築する。さらに,最適なEPS,金属カチオン濃度条件を見出すことで,オーバーフローによる簡便処理でのアオコ除去を実現する。最終的に,さまざまな浄水処理条件に応じた浮揚除去手法を体系化することで,より実用的なアオコ除去に基づいた浄水処理プロセスを創成する。

Outline of Final Research Achievements

This study aimed to establish new removal method of Microcystis, one of the cyanobacterial bloom forming species, using enhanced buoyancy via reduction of cellular carbohydrate and expansion of colony size. The cell density of Microcystis could be reduced by preculture for ~96 h under dark condition and the colony size could be expanded by controlling extracellular polysaccharides (TB-EPS) isolated by cyanobacterial blooms and cationic ion concentration. Consequently, buoyancy and floating velocity of Microcystis were succussed to be enhanced significantly. These results would become a stepping stone for establishment of new treatment process of cyanobacterial blooms, which affect adverse effect in water treatment in water treatment facility.

Academic Significance and Societal Importance of the Research Achievements

世界的な人口増加により,水道水源の水質低下が問題となっている。そして,富栄養化した水域でのアオコの発生が観測され,今後,その発生頻度は高まると予想される。本研究のアオコ除去方法は従来法と比較して,(i) 特別な装置や化学薬品を必要としない,(ii) 環境に負荷を与えない,(iii) アオコを無傷で除去・回収可能,という面で利点があり,省エネ・省コストを配慮する現代社会において意義ある研究として位置づけられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (31 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (18 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Remarks (2 results)

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

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Tennessee Technological University(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Tennessee Technological University(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Enhancement of cyanobacterial blooms bouyancy by controlling extracellular polysaccharides content and cation concentration under light-limited condition2024

    • Author(s)
      Amaka Masumoto, Yoshimasa Amano, Motoi Machida
    • Journal Title

      International Journal of Environmental Science and Technology

      Volume: 21 Issue: 2 Pages: 1245-1254

    • DOI

      10.1007/s13762-023-05014-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation of Cyanobacterial Blooms-Originated Adsorbent for the Removal of Cadmium Ions2024

    • Author(s)
      Amano Yoshimasa、Matsuzawa Fumiya、Wang Jing、Machida Motoi
    • Journal Title

      Journal of Ion Exchange

      Volume: 35 Issue: 1 Pages: 9-17

    • DOI

      10.5182/jaie.35.9

    • ISSN
      0915-860X, 1884-3360
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Growth Characteristics and Changes in Elemental Composition of <i>Microcystis</i> sp. under Various N:P Mass Ratios2023

    • Author(s)
      Yuki Nariyama, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Journal of Water and Environment Technology

      Volume: 21 Issue: 2 Pages: 119-128

    • DOI

      10.2965/jwet.22-064

    • ISSN
      1348-2165
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Control of <i>Microcystis</i> Buoyancy by Reducing Cellular Carbohydrate Content at High Temperature2023

    • Author(s)
      Thoriq Teja Samudra, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Journal of Water and Environment Technology

      Volume: 21 Issue: 1 Pages: 41-48

    • DOI

      10.2965/jwet.22-067

    • ISSN
      1348-2165
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Buoyancy control of Microcystis using different light regimes combined with extracellular polysaccharides and cationic ions2023

    • Author(s)
      Thoriq Teja Samudra, Hiroaki Takahashi, Yoshimasa Amano, Motoi Machida
    • Journal Title

      European Journal of Phycology

      Volume: - Issue: 4 Pages: 1-11

    • DOI

      10.1080/09670262.2023.2183990

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature-dependent growth characteristics and dominance trends of the cyanobacterium Microcystis sp. and the diatom Cyclotella meneghiniana2022

    • Author(s)
      Jingnan Li, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Hydrobiologia

      Volume: 849 Issue: 7 Pages: 1677-1688

    • DOI

      10.1007/s10750-022-04810-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Investigation of a suitable method to recover the Dolichospermum planctonicum akinetes in different media2022

    • Author(s)
      Yuki Nariyama, So Suzuki, Yoshimasa Amano, Motoi Machida
    • Journal Title

      Japanese Journal of Water Treatment Biology

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effective dilution rate to suppress the risk of Microcystis blooms in Lake Tega, Japan, based on a competitive growth simulation model2022

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

      Water Supply

      Volume: - Issue: 5 Pages: 4864-4874

    • DOI

      10.2166/ws.2022.159

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 有害藻類由来の吸着剤によるカドミウムイオン吸脱着特性2024

    • Author(s)
      相澤駿介, 天野佳正, 町田基
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 窒素およびリン制限下でのTN/TP比がMicrocystisの増殖挙動に及ぼす影響2024

    • Author(s)
      町田龍星, 天野佳正, 町田基
    • Organizer
      第58回日本水環境学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 有毒藻類の新たな分離回収技術と藻類由来の吸着剤による重金属イオンの吸着特性2023

    • Author(s)
      天野佳正, 町田基
    • Organizer
      第1回「スラグ新用途開発のための機能とその関連する材料分析技術の開発」フォーラム講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 群体形態制御による有毒藍藻類の浮揚速度向上と新規分離技術への応用2023

    • Author(s)
      増本天翔, 天野佳正, 町田基
    • Organizer
      化学工学会山形大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 細胞密度と群体形態制御による有毒シアノバクテリアの新たな分離回収技術2023

    • Author(s)
      天野佳正,Samudra Thoriq Teja,増本天翔,町田基
    • Organizer
      化学工学会秋季大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] シアノバクテリア由来の炭素系吸着剤によるカドミウムイオンのカラム吸着2023

    • Author(s)
      天野佳正,相澤駿介,町田基
    • Organizer
      第36回日本イオン交換研究発表会・第42回溶媒抽出討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Growth characteristics and changes in elemental composition of Microcystis sp. under various N:P mass ratios2022

    • Author(s)
      Yuki Nariyama, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2022-online)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Control of Microcystis buoyancy by reducing cellular carbohydrate content at high temperature2022

    • Author(s)
      Thoriq Teja Samudra, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2022-online)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Growth competition model improvement overcoming the overstimation in nutrient uptake term between Microcystis sp. and Cyclotella meneghiniana under low temperature2022

    • Author(s)
      Jingnan Li, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2022-online)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光制限と群体径の拡大によるアオコの不溶性制御と新規除去法への応用2022

    • Author(s)
      増本天翔,天野佳正, 町田基
    • Organizer
      化学工学会新潟大会
    • Related Report
      2022 Research-status Report
  • [Presentation] アオコ形成種ミクロキスティスの増殖と抑制に及ぼす窒素・リン濃度比の影響2022

    • Author(s)
      町田龍星, 天野佳正, 町田基
    • Organizer
      化学工学会88年会
    • Related Report
      2022 Research-status Report
  • [Presentation] アオコ形成種ミクロキスティスの群体サイズ制御を利用した浮揚速度制御による新規除去法の検討2022

    • Author(s)
      川地恭輔, 天野佳正, 町田基
    • Organizer
      化学工学会88年会
    • Related Report
      2022 Research-status Report
  • [Presentation] アオコの群体サイズ拡大に及ぼす細胞外多糖類量とカチオン濃度の影響2021

    • Author(s)
      河口礼佳,天野佳正,町田基
    • Organizer
      化学工学会第87年会(神戸)
    • Related Report
      2021 Research-status Report
  • [Presentation] アオコ除去を目的とした光制限と群体形成促進によるミクロキスティスの浮揚性向上の検討2021

    • Author(s)
      増本天翔,天野佳正,町田基
    • Organizer
      化学工学会第87年会(神戸)
    • Related Report
      2021 Research-status Report
  • [Presentation] Control of the buoyancy of Microcystis sp. by adjusting light irradiance2021

    • Author(s)
      Yoshimasa Amano, Hiroaki Takahashi, Thoriq Teja Samudra, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2021-online)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of different light regimes on Microcystis sp. buoyancy2021

    • Author(s)
      Thoriq Teja Samudra, Hiroaki Takahashi, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2021-online)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Temperature-dependent growth characteristics and dominance trends of Microcystis sp. and Cyclotella meneghiniana2021

    • Author(s)
      Jingnan Li, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2021-online)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Characteristics of changes in the elemental composition and growth of Microcystis sp. under various nutrient conditions2021

    • Author(s)
      Yuki Nariyama, Yoshimasa Amano, Motoi Machida
    • Organizer
      Water and Environment Technology Conference (WET2021-online)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 環境化学研究室のホームページ

    • URL

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

    • Related Report
      2023 Annual Research 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
      2022 Research-status Report 2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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