Kinetics of the aerobic co-metabolism of 1,1-dichloroethylene by Achromobacter sp.: a novel benzene-grown culture

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• 作者：Shizong Wang (1)
  Qi Yang (1)
  Luning Zhang (1)
  Yeyao Wang (2)
  
• 关键词：Achromobacter ; Benzene ; 1 ; 1 ; Dichloroethylene ; Kinetic parameters ; Non ; competitive inhibition
• 刊名：Biotechnology Letters
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：36
• 期：6
• 页码：1271-1278
• 全文大小：
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• 作者单位：Shizong Wang (1)
  Qi Yang (1)
  Luning Zhang (1)
  Yeyao Wang (2)
  
  1. School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, People’s Republic of China
  2. China National Environmental Monitoring Centre, Beijing, 100012, People’s Republic of China
  
• ISSN：1573-6776

文摘

Batch experiments were performed for the aerobic co-metabolism of 1,1-dichloroethylene (1,1-DCE) by Achromobacter sp., identified by gene sequencing of 16S rRNA and grown on benzene. Kinetic models were employed to simulate the co-metabolic degradation of 1,1-DCE, and relevant parameters were obtained by non-linear least squares regression. Benzene at 90?mg?L? non-competitively inhibited degradation of 1,1-DCE (from 125 to 1,200?μg?L?). The maximum specific utilization (kc) rate and the half-saturation constant (Kc) for 1,1-DCE were 54?±?0.85?μg?h? and 220?±?6.8?μg?L?, respectively; the kb and Kb for benzene were 13?±?0.18?mg?h? and 28?±?0.42?mg?L?, respectively. This study provides a theoretical basis to predict the natural attenuation when benzene and 1,1-DCE occur as co-contaminants.