Control of buoyancy of algal bloom-forming blue-green alga Microcystis and its application to advanced removal
Project/Area Number |
18K04404
|
Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 22060:Environmental systems for civil engineering-related
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Research Institution | Chiba University |
Principal Investigator |
|
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)
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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.
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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。
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Report
(4 results)
Research Products
(18 results)