Biosorption and biodegradation of bisphenol A in an activated sludge system

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• 作者：Yong Gu ; Xianbo Sun ; Yongdi Liu
• 关键词：Activated sludge ; Bisphenol A ; FBR method ; Specific biodegradation rate ; Specific biosorption rate
• 刊名：Research on Chemical Intermediates
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：42
• 期：5
• 页码：4289-4301
• 全文大小：825 KB
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• 作者单位：Yong Gu (1)
  Xianbo Sun (1)
  Yongdi Liu (1)
  
  1. School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Physical Chemistry
  Inorganic Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1568-5675

文摘

Research on biosorption and biodegradation of bisphenol A (BPA) in the environment is crucial for pollutant remediation. In this study, the specific biosorption rate (q _bd) and specific biodegradation rate (q _bio) of BPA in an activated sludge system with different parameters such as initial BPA concentration, pH, heavy metal and other organic carbon sources were investigated. The experimental results showed that biodegradation of BPA in the concentration range of 10–100 mg/L fitted a zero-order reaction. Kinetic parameters q _bd and q _bio of at various pH values of 6.0, 7.0, 8.0 and 9.0 were 1.20, 1.10, 1.08 and 0.54, 0.57, 0.62, 0.16, 0.74 day−1, respectively. High pH greatly inhibited both biosorption and biodegradation of BPA. Kinetic parameters q _bd and q _bio at various concentrations of Cu2+of 0, 10 and 50 mg/L were 1.10, 1.06, 0.36 and 0.57, 0.36, 0.23 day−1, respectively. When Cu2+ = 10 mg/L, the inhibition of biodegradation was larger than biosorption. Otherwise, when Cu2+ = 50 mg/L, the inhibition of biosorption was larger than biodegradation. Meanwhile, the toxicity of Cu2+ was reduced by chelant EDTA because of less free Cu2+. Glucose significantly accelerated the degradation of BPA, while p-hydroxybenzaldehyde did not.