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Effect of biosurfactant on 2,4-dichlorophenol biodegradation in an activated sludge bioreactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
36464 45133 2005 5 PDF Available
Title
Effect of biosurfactant on 2,4-dichlorophenol biodegradation in an activated sludge bioreactor
Abstract

The effect of biosurfactant on biodegradability of 2,4-dichlorophenol (2,4-DCP) was investigated by activated sludge bioreactor. In 2,4-DCP treatability experiments, acclimated culture was used in the presence of readily degradable substrate (glucose). JBR 425 rhamnolipid was used as biosurfactant. A test reactor with added biosurfactant and control reactor (without biosurfactant) were used in parallel tests. 2,4-DCP removal efficiency for control and test reactor ranged between 97.4–97.7 and 99.7–99.8%, respectively, when the influent concentration of 2,4-DCP ranged between 30 and 100 mg/l. The removal efficiency of 2,4-DCP decreased up to 24.2% and 32.9% in the control and test reactor, respectively, when the concentration of 2,4-DCP was increased from 100 to 150 mg/l. As a result, application of biosurfactant caused some increase in biodegradation rate of 2,4-DCP. In the test reactor, the presence of biosurfactant stimulated bacterial growth and microorganisms were affected less from the toxicity of 2,4-DCP.

Keywords
Biosurfactant; 2,4-Dichlorophenol; Biodegradation; Activated sludge bioreactor; Acclimation; Toxicity
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Effect of biosurfactant on 2,4-dichlorophenol biodegradation in an activated sludge bioreactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 8, July 2005, Pages 2745–2749
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