2016 Fiscal Year Final Research Report
Revealing mechanism of anaerobic sulfur oxidation
| Project/Area Number |
15K14057
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 排水処理 / 硫酸塩還元 / 硫黄酸化 |
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| Outline of Final Research Achievements |
We analyzed the diversity of microbes involved in anaerobic sulfur oxidation in five upflow anaerobic sludge blanket (UASB) reactors used for treating lactate, formate, and acetate as carbon source with sulfa under lower-temperature (15oC) conditions. Anaerobic sulfur oxidation occurred in the absence of oxygen, with nitrite and nitrate as electron acceptors; however, reactor parameters demonstrated that anaerobic conditions were maintained. In order to gain insights into the underlying basis of anaerobic sulfur oxidation, the microbial diversity that exists in the UASB sludges were analyzed comprehensively to determine their identities and contribution to sulfur oxidation. An occurrence of a unique phenomenon, the "anaerobic sulfur oxidation reaction", were confirmed in all UASB reactors. In the reactor bottom, sulfate-reducing bacteria is existed as dominant.
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| Free Research Field |
水環境工学
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