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Biodegradation of phthalic acid esters (PAEs) in soil bioaugmented with acclimated activated sludge

Paper ID Volume ID Publish Year Pages File Format Full-Text
36712 45146 2004 5 PDF Available
Title
Biodegradation of phthalic acid esters (PAEs) in soil bioaugmented with acclimated activated sludge
Abstract

The degradation characteristics of four phthalic acid esters (PAEs), i.e. di-methyl phthalate (DMP), di-ethyl phthalate (DEP), di-n-butyl phthalate (DBP) and di-n-octyl phthalate (DOP) in the soil augmented with acclimated sludge was investigated in order to assess the efficacy of bioaugmentation as a strategy for remediating PAEs-contaminated soil and correlate the degradation rate of PAEs with their alkyl chain length. The results demonstrated that PAEs with shorter alkyl chain, that is, DMP and DEP could be degraded more quickly than DBP and DOP. The degradation of four PAEs in the soil conformed to a first-order reaction kinetic equation. The half-lives of PAEs degradation decreased significantly with increasing carbon number of the alcohol moiety. Half-lives decreased from 2.29 days for DMP to 28.4 days for DOP when the carbon number of alkyl chain increased from one for DMP to eight for DOP. The degradation rate of PAEs and the corresponding half-lives could correlate with the alkyl chain length and their octanol–water partition coefficients (Kow) quite well for the four PAEs tested in this study.

Keywords
Phthalic acid esters; Biodegradation; Kinetics; Priority pollutant; Bioremediation; Bioaugmentation
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Biodegradation of phthalic acid esters (PAEs) in soil bioaugmented with acclimated activated sludge
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 39, Issue 12, 29 October 2004, Pages 1837–1841
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