期刊
BIORESOURCE TECHNOLOGY
卷 130, 期 -, 页码 536-542出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.12.095
关键词
Piperazine; Biodegradation; Paracoccus aminovorans TOH; Metabolic pathway
资金
- Research Project of Taihu Lake Office, Jiangsu Province [TH2012203]
Piperazine is widely used as an intermediate in the manufacture of insecticides, rubber chemicals, corrosion inhibitors, and urethane. In this study, a highly effective piperazine-degrading bacteria strain, TOH, was isolated from the acclimated activated sludge of a pharmaceutical plant. This strain, identified as Paracoccus sp., utilises piperazine as the sole source of carbon, nitrogen and energy for growth. The optimal pH and temperature for the growth of TOH were 8.0 and 30 degrees C, respectively. The effects of co-substrates and heavy metals on the degradation efficiency of piperazine were investigated. The results indicated that exogenously supplied glucose promoted the degradation of piperazine, while the addition of ammonium chloride slightly inhibited piperazine degradation. Metal ions such as Ni2+ and Cd2+ inhibited the degradation of piperazine, whereas Mg2+ increased it. In addition, metabolic intermediates were identified by mass spectrometry, allowing a degradation pathway for piperazine to be proposed for the first time. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据