Biodegradation of aniline in an alkaline environment by a novel strain of the halophilic bacterium, Dietzia natronolimnaea JQ-AN
- 作者：Qiong Jin ; Zhongce Hu ; Zanfang Jin ; Lequan Qiu ; Weihong Zhong ; Zhiyan Pan ; panzhiyan@zjut.edu.cn
- 关键词：Dietzia ; Biodegradation ; Aniline ; Salinity ; Alkalinity
- 刊名：Bioresource Technology
- 出版年：2012
- 期刊代码：11_09608524
- 类别：ce
- 出版时间：August, 2012
- 卷：117
- 期：Complete
- 页码：148-154
- 文件大小：415 K
摘要
Dietzia natronolimnaea JQ-AN was isolated from industrial wastewater containing aniline. Under aerobic conditions, the JQ-AN strain degraded 87%of the aniline in a 300 mg L鈭? aniline solution after 120 h of shake flask incubation in a medium containing sodium acetate. This strain had an unusually high salinity tolerance in minimal medium (0-6%NaCl, w/v). The optimal pH for microbial growth and aniline biodegradation was pH 8.0. Two liters of simulated aniline wastewater was created in a reactor at pH 8.0 and 3%NaCl (w/v), and biodegradation of aniline was tested over 7 days at 30 掳C. For the initial concentrations of 100, 300, and 500 mg L鈭?, 100%, 80.5%and 72%of the aniline was degraded, respectively. Strain JQ-AN may use an ortho-cleavage pathway for dissimilation of the catechol intermediate.