| Degradation of Tetrachloroethene by Several Co-metabolism Substrates in Groundwater |
| |
| 作者姓名： | SHI Jinghua LIU Fei CHEN Honghan LI Ye |
| |
| 作者单位： | [1]Beijing Key Laboratory of Water Resources ＆ Environmental Engineering, China University of Geosciences （Beijing）, Beijing 100083 [2]Sino-Overseas Construction Information Co. Ltd, Beijing 100037 |
| |
| 基金项目： | Acknowledgements This work was supported by the NSFC （No. 40372109 and 40572146） and the project （2006DFA21180） from the Chinese Ministry of Science and Technology. The analytical data were supplied by Beijing Key Laboratory of Water Resources ＆ Environmental Engineering. The authors thank Prof. Zhong Zuoshen, Prof.Chen Honghan and Prof. He Jiangtao for their excellent helpful advice and discussion. |
| |
| 摘 要： | Tetrachloroethene （PCE） is biodegraded by reductive dechlorination with co-metabolism substrates under anaerobic conditions. By inoculating sludge from an anaerobic pool, a biodegradation test of PCE is conducted in the anaerobic condition. In the test, several substrates including methanol, ethanol, formate, acetate, lactate and glucose, are conducive to the conversion from PCE to TCE and 1,1-DCE. The results show the microbe can be cultivated well under the anaerobic circumstances of mixture of sewage （sludge） and soil with the index of COD after eleven days. Degradation of PCE accords with one order reaction kinetics equation. The sequence of the reaction rate constant is Kacetate 〉Kglucose 〉 Klactate 〉 Kethanol 〉 Kformate 〉 Kmethanol, and acetate is an outstanding co-metabolism substratum whose reaction rate constant is 0.6632d^-1.
|
| 关 键 词： | 全氯乙烯 生物降解 地下水 衬底 |
| 修稿时间： | 2006-02-20 |
Degradation of Tetrachloroethene by Several Co-metabolism Substrates in Groundwater |
| |
| Authors: | SHI Jinghua LIU Fei CHEN Honghan LI Ye |
| |
| Abstract: | Tetrachloroethene (PCE) is biodegraded by reductive dechlorination with co-metabolism substrates under anaerobic conditions. By inoculating sludge from an anaerobic pool, a biodegradation test of PCE is conducted in the anaerobic condition. In the test, several substrates including methanol, ethanol, formate, acetate, lactate and glucose, are conducive to the conversion from PCE to TCE and 1,1-DCE. The results show the microbe can be cultivated well under the anaerobic circumstances of mixture of sewage (sludge) and soil with the index of COD after eleven days. Degradation of PCE accords with one order reaction kinetics equation. The sequence of the reaction rate constant is Kacetate ＞Kglucose ＞ Klactate ＞ Kethanol ＞ Kformate ＞ Kmethanol, and acetate is an outstanding co-metabolism substratum whose reaction rate constant is 0.6632d-1. |
| |
| Keywords: | tetrachloroethene biodegradation reductive dechlorination Co-metabolism substrate |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《Acta Geologica Sinica》浏览原始摘要信息 |
| 点击此处可从《Acta Geologica Sinica》下载免费的PDF全文 |
