2011 Fiscal Year Final Research Report
Development of low-cost biological denitrification processes using poly(L-lactic acids) having low molecular weight
| Project/Area Number |
21510084
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
YAMADA Takeshi 豊橋技術科学大学, 大学院・工学研究科, 助教 (90533422)
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| Co-Investigator(Kenkyū-buntansha) |
HIRAISHI Akira 豊橋技術科学大学, 大学院・工学研究科, 教授 (40283486)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ポリ乳酸 / 脱窒細菌 / 固相脱窒法 / 未利用バイオマス / 電子供与体 / 環境浄化 |
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| Research Abstract |
This study was performed to develop a technology for use of poly(L-lactic acid)(PLLA) in biological denitrification processes as an external electron donor. Appropriate control of weight-average molecular weight and crystallinity was important to enhance abiotic release of lactate(electron donor) from the PLLA. In addition, nirS and nirK transcript-targeted molecular analyses revealed that major denitrifying bacteria in the processes were members of genera Comamonas, Thauera, Alcaligenese and Castellaniella.
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