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Degradation of bisphenol A and nonylphenol by nitrifying activated sludge

Paper ID Volume ID Publish Year Pages File Format Full-Text
35811 45107 2007 5 PDF Available
Title
Degradation of bisphenol A and nonylphenol by nitrifying activated sludge
Abstract

Nitrifier-enriched activated sludge was used in batch degradation of bisphenol A (BPA) and nonylphenol (NP) to verify if ammonium-oxidizing activity within nitrifiers is responsible for the biodegradation of those compounds. Decreases in both BPA and NP concentrations occurred simultaneously with ammonium (NH4+) oxidation into nitrate (NO3−) by nitrifying sludge. However, when ammonium was replaced by nitrite (NO2−) in the medium, an acclimation period was required prior onset of significant degradation of BPA and NP. In the presence of inhibitors such as allylthiourea or Hg2SO4, BPA and/or NP reduction decreased significantly, implying that removal of BPA and NP was mostly mediated by biological activity rather than by physicochemical adsorption onto sludge flocs.

Keywords
Bisphenol A; Nonylphenol; Nitrifying activated sludge; Cometabolism
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Degradation of bisphenol A and nonylphenol by nitrifying activated sludge
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 10, October 2007, Pages 1470–1474
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
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