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Authors
Affiliations
1 Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of
Technology, Beijing 100124, CN
Source
Nature Environment and Pollution Technology, Vol 13, No 2 (2014), Pagination: 437-440
Abstract
A 17β-estradiol (E2) degrading strain was isolated by using enrichment culture of activated sludge from wastewater treatment plants and identified as the genus Dyella. The estradiol degradation by this strain fitted in a first-order reaction. The degradation rate constant K was 0.025 h-1. Methanol and sodium acetate could be utilized by the bacteria. In contrast, ethanol and glucose were not completely utilized within 10 days. Estradiol was converted to estrone first and then used for further degradation. Estrone degradation by the bacteria also fitted in a first-order reaction (K=0.0133 h-1). The relationship between the specific degradation rate and substrate concentration fitted in the Monod equation.
Keywords
Activated Sludge, Estrogen, 17β-Estradiol Degradation, Dyella sp.
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