| Project/Area Number |
16K06557
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Fukuoka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
浜田 晃規 福岡大学, 工学部, 助手 (30751870)
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| Research Collaborator |
KOGA YOSHIAKI
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | フルボ酸鉄 / ヘドロ / 光フェントン反応 / 浄化 / 干潟 / アサリ / 有明海 / 溶存鉄 / ヘドロ分解 / 干潟浄化 / フルボ酸鉄シリカ / 二枚貝 / 干潟再生 / 環境修復 / 底泥 |
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| Outline of Final Research Achievements |
The Nagasu Tidal Flat that carried out this field experiment is located at the middle site of Kyushu Island. The Ariake Sea is a heavily closed sea water area, therefore tidal exchange with the outside of the bay is not effective, and eutrophication progresses by pollution load from land. The catches of the short-necked clam in the Ariake Sea were around 65,000ton in 1970-80s, but it has decreased since 1990s, it reaches almost less than 1000ton these dozens of years.
In this research, we observed the effect of Fe-Fulvic acid silica complex material for mud from decayed organic matter that forms on the sea bed in the Nagasu tidal flat that located at Kumamoto prefecture. As a result of having installed Fe-Fulvic acid silica complex material on that tidal flat, the resolution of the sludge was confirmed, and the habitation of the short-necked clam was restored in only a half year.
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| Academic Significance and Societal Importance of the Research Achievements |
廃棄物である木屑と下水汚泥又は食品廃棄物を一次発酵したものに，水処理剤として使用されているシリカ・鉄水溶液薬品を混合し，フルボ酸鉄シリカ含有物を製造できることを利用している点が学術的に独創的なポイントである．この技術によって，非常に安価でヘドロ浄化に有効なフルボ酸鉄シリカ資材を作成することが可能となっており，有明海のように広大な場所でも適応可能な浄化方法となっている．学術的な意義は，水域の富栄養化を抑制しながら同時にヘドロ浄化が行われるところにある．この成果は，有明海における底泥環境の改善に役立つとともに，漁場の再生へとつながって行き，最終的には有明海の環境修復へと進んでいく可能性が高い．
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