2009 Fiscal Year Final Research Report
Preventing mechanism of hydrogen sulphide emission from sediment to water by nitrate-accumulating sulphur oxidizing bacteria
| Project/Area Number |
18201005
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
SAYAMA Mikio National Institute of Advanced Industrial Science and Technology, 環境管理技術研究部門, 主任研究員 (20344145)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 青潮 / 堆積物 / 硫化物 / イオウ酸化細菌 / 硝酸態窒素 / 物質循環 |
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| Research Abstract |
Preventing mechanism of hydrogen sulphide (H_2S) emission from sediment to water by nitrate-accumulating sulphur oxidizing bacteria (Beggiatoa) was investigated in Tokyo Bay, and it was discovered that bioelectrochemical reactions with oxygen (O_2) are playing important role in addition to chemical reactions with iron oxides (FeOOH) and biological reactions with nitrate (NO_3^-) by Beggiatoa. Electric communication between distant chemical and biological processes in nature adds an entirely new dimension to our understanding of biogeochemistry and microbial ecology.
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