Examining the biodegradation of endocrine disrupting bisphenol A and nonylphenol in WWTPS

  • Press-Kristensen K
  • Lindblom E
  • Schmidt J
 et al. 
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Abstract

The aim of this work was to examine biodegrdn. of the endocrine disrupting chems. bisphenol A (BPA) and nonylphenol (NP) in activated sludge. Expts. were performed in a pilot wastewater treatment plant (WWTP) in Copenhagen, Denmark. During std. operation the BPA concn. was halved whereas the NP concn. was unchanged. Step-addn. expts. showed that biomass adaptation to increased BPA and NP concns. took 10 to more than 40 days depending on temp., hydraulic retention time, and pre-exposure of the biomass. Mass-balance expts. showed that above 99% of the dosed BPA and 90% of the dosed NP is removed by biodegrdn. at steady-state. Batch expts. showed that BPA biodegrdn. occur solely under aerobic conditions. The work is believed to add vital knowledge to our understanding of parameters and processes governing biodegrdn. of EDCs in WWTPs. [on SciFinder(R)]

Author-supplied keywords

  • Activated sludge
  • Biodegradation
  • Bisphenol A
  • Nonylphenol
  • Wastewater

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