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Biodegradation of estrogens by facultative anaerobic iron-reducing bacteria

Paper ID Volume ID Publish Year Pages File Format Full-Text
35036 45069 2010 4 PDF Available
Title
Biodegradation of estrogens by facultative anaerobic iron-reducing bacteria
Abstract

Natural estrogens such as estrone, 17β-estradiol, estriol, and the synthetic component of contraceptive pills, 17α-ethinylestradiol, enter the municipal wastewater treatment plant via human excretions. A significant portion of these substances is found to remain in reject water produced after anaerobic digestion of activated sludge. In this study, the effect of the oxidant, Fe(III), and facultative anaerobic strain of iron-reducing bacteria on the anaerobic degradation of estrogens in reject water was investigated. Synthetic 17α-ethinylestradiol remained resistant to anaerobic biodegradation by iron-reducing bacteria, while natural estrogens such as 17β-estradiol, estriol, and estrone were removed by 92%, 60% and 27%, respectively, after 15 days of batch cultivation of iron-reducing bacteria in reject water with the addition of all estrogens to concentrations 100 μg l−1 each. The ability of facultative anaerobic iron-reducing bacteria to degrade estrogens can be used for the anaerobic removal of trace organics from reject water in municipal wastewater treatment plant.

Keywords
Estrone; 17β-Estradiol; Estriol; 17α-Ethinylestradiol; Biodegradation; Iron-reducing bacteria
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Biodegradation of estrogens by facultative anaerobic iron-reducing bacteria
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 2, February 2010, Pages 284–287
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us