UV photolysis for enhanced phenol biodegradation in the presence of 2,4,6-trichlorophenol (TCP)

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• 作者：Jiaxiu Song ; Wenbing Wang ; Rongjie Li ; Jun Zhu ; Yongming Zhang ; Rui Liu…
• 关键词：2 ; 4 ; 6 ; trichlorophenol ; Biodegradation ; Kinetics ; Phenol ; Photolysis
• 刊名：Biodegradation
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：27
• 期：1
• 页码：59-67
• 全文大小：1,100 KB
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• 作者单位：Jiaxiu Song (1)
  Wenbing Wang (1)
  Rongjie Li (1)
  Jun Zhu (1)
  Yongming Zhang (1)
  Rui Liu (2)
  Bruce E. Rittmann (3)
  
  1. Department of Environmental Science and Engineering, College of Life and Environmental Science, Shanghai Normal University, Shanghai, 200234, People’s Republic of China
  2. Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, 314006, Zhejiang, People’s Republic of China
  3. Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, Tempe, AZ, 85287-5701, USA
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Soil Science and Conservation
  Geochemistry
  Terrestrial Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Waste Management and Waste Technology
  
• 出版者：Springer Netherlands
• ISSN：1572-9729

文摘

A bacterial strain isolated from activated sludge and identified as Bacillus amyloliquefaciens could biodegrade phenol, but 2,4,6-trichlorophenol (TCP) inhibited phenol biodegradation and biomass growth. UV photolysis converted TCP into dichlorocatechol, monochlorophenol, and dichlorophenol, and this relieved inhibition by TCP. Phenol-removal and biomass-growth rates were significantly accelerated after UV photolysis: the monod maximum specific growth rate (μ _max) increased by 9 % after TCP photolysis, and the half-maximum-rate concentration (K _S) decreased by 36 %. Thus, the major benefit of UV photolysis in this case was to transform TCP into a set of much-less-inhibitory products. Keywords 2,4,6-trichlorophenol Biodegradation Kinetics Phenol Photolysis