Biodegradation of 2-methylisoborneol by bacteria enriched from biological activated carbon

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• 作者：Rongfang Yuan (1)
  Beihai Zhou (1)
  Chunhong Shi (1)
  Liying Yu (1)
  Chunlei Zhang (2)
  Junnong Gu (2)
  
• 关键词：2 ; methylisoborneol (2 ; MIB) ; biodegradation ; 2 ; methylenebornane ; 2 ; methyl ; 2 ; bornane ; pseudo ; firstorder reaction
• 刊名：Frontiers of Environmental Science & Engineering
• 出版年：2012
• 出版时间：October 2012
• 年：2012
• 卷：6
• 期：5
• 页码：701-710
• 全文大小：361KB
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• 作者单位：Rongfang Yuan (1)
  Beihai Zhou (1)
  Chunhong Shi (1)
  Liying Yu (1)
  Chunlei Zhang (2)
  Junnong Gu (2)
  
  1. Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
  2. Water Quality Monitoring Center, Beijing Waterworks Group, Beijing, 100085, China
  
• ISSN：2095-221X

文摘

One of the most common taste and odour compounds (TOCs) in drinking water is 2-methylisoborneol (2-MIB) which cannot be readily removed by conventional water treatments. Four bacterial strains for degrading 2-MIB were isolated from the surface of a biological activated carbon filter, and were characterized as Micrococcus spp., Flavobacterium spp., Brevibacterium spp. and Pseudomonas spp. based on 16S rRNA analysis. The removal efficiencies of 2-MIB with initial concentrations of 515 ng·L? were 98.4%, 96.3%, 95.0%, and 92.8% for Micrococcus spp., Flavobacterium spp., Brevibacterium spp. and Pseudomonas spp., respectively. These removal efficiencies were slightly higher than those with initial concentration at 4.2 mg·L? (86.1%, 84.4%, 86.7% and 86.0%, respectively). The kinetic model showed that biodegradation of 2-MIB at an initial dose of 4.2 mg·L? was a pseudo-first-order reaction, with rate constants of 0.287, 0.277, 0.281, and 0.294 d?, respectively. These degraders decomposed 2-MIB to form 2-methylenebornane and 2-methyl-2-bornane as the products.