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Biodegradation and biosorption of tetracycline and tylosin antibiotics in activated sludge system

Paper ID Volume ID Publish Year Pages File Format Full-Text
35104 45074 2009 5 PDF Available
Title
Biodegradation and biosorption of tetracycline and tylosin antibiotics in activated sludge system
Abstract

The aim of this study was to determine the fate of veterinary antibiotics entering biological treatment process. Due to the prevalence of their respective antibiotic family usage in livestock, tetracycline and tylosin were selected. Using modified Sturm test (OECD 301-B), their biodegradation were compared to that of a referent pollutant, sodium benzoate, well-known for its high biodegradability. Biodegradation rates were −28 and −35% for tetracycline and 4 and −5% for tylosin showing an absence of biodegradability. OECD 301-B inhibition tests showed a potential toxicity of both molecules on activated sludge inoculum derived from membrane bioreactor. Tetracycline presented good adsorbability while tylosin remained mostly present in the soluble phase. The Langmuir maximum adsorption capacity (Cs,max) was found to be 72 and 7.7 mg g−1 for tetracycline and tylosin, respectively. Adsorption was therefore the most favourable fate for tetracycline entering a biological process. Conclusions on tylosin case were more controversial.

Keywords
Biodegradation; Biosorption; Tetracycline; Tylosin; Activated sludge
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Biodegradation and biosorption of tetracycline and tylosin antibiotics in activated sludge system
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 44, Issue 11, November 2009, Pages 1302–1306
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