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Heterotrophic Denitrification of Nitrate-Contaminated Water Using Different Solid Carbon Sources

文献类型： 外文期刊

作者： Xu, Ying 1 ; Qiu, Tian-Lei 2 ; Han, Mei-Lin 2 ; Li, Jun 1 ; Wang, Xu-Ming 2 ;

作者机构： 1.Shenyang Agr Univ, Coll Land Resources & Environm, Shenyang 110866, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Agro Biotechnol Res Ctr, Banjing 100097, Peoples R China

关键词： Carbon source;groundwater;nitrate;denitrification;biodegradable polymers

期刊名称：2011 3RD INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND INFORMATION APPLICATION TECHNOLOGY ESIAT 2011, VOL 10, PT A

ISSN： 1878-0296

年卷期： 2011 年 10 卷

页码：

收录情况： SCI

摘要： Biodegradability and COD release of polylactic acid (PLA), polycaprolactone (PCL) and polylactic acid/Poly (3-hydroxybutyrate-co-3-hydroxyvalerate) blend (PLA/PHBV) were determined in water solution with sludge as the inoculum, and the feasibility of using them as carbon sources to remove nitrate from nitrate-contaminated water was also investigated. The experimental results indicate that PLA/PHBV is degraded more rapidly and easily than PLA and PCL. PLA is difficult to be degraded in water solution, so it is unsuitable to be used as carbon source for denitrification. Average denitrification rates supported by PCL and PLA/PHBV were 6.34 and 6.63 mg L-1 h(-1) with 7 h HRT under a batch system, respectively. Nitrite was not detected in the treated water after 9-hour operation. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Conference ESIAT2011 Organization Committee.

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