Effects of inorganic nutrient levels on the biodegradation of benzene, toluene, and xylene (BTX) by Pseudomonas spp. in a laboratory porous media sand aquifer model

Jiin Shuh Jean, Ming Kuo Lee, Shih Ming Wang, Pabitra Chattopadhyay, Jyoti Prakash Maity

研究成果: Article同行評審

42 引文 斯高帕斯(Scopus)

摘要

The effect of inorganic nutrients (sulfate, phosphate, and ammonium chloride) on the aerobic biodegradation of benzene, toluene, and xylene (BTX) by Pseudomonas spp. was studied in the laboratory using a glass sand tank. The increase of nutrient levels resulted in enhanced bacterial growth and BTX degradation. Sulfate and phosphate serve as key electron acceptors in the microbiological processes degrading BTX. The observed bacterial morphological changes during BTX degradation reveal that the filamentous bacteria were the dominant species at low temperatures about 20 °C. The spherical and rod-shaped cells became dominant at higher temperatures ranging from 25 °C to 28 °C. When the BTX mixture was allowed to be biodegraded for longer incubation periods of 21-42 h at high phosphate concentrations, large amounts of rod-shaped cells were clustered. The morphological adaptation appears to be controlled by the temperature and nutrient levels in the sandy medium where Pseudomonas spp. thrives.

原文English
頁(從 - 到)7807-7815
頁數9
期刊Bioresource technology
99
發行號16
DOIs
出版狀態Published - 2008 十一月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 環境工程
  • 可再生能源、永續發展與環境
  • 廢物管理和處置

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