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Effect of soil moisture on bioremediation of chlorophenol-contaminated soil

Effect of soil moisture on bioremediation of chlorophenol-contaminated soil A chlorophenol-contaminated soil was tested for the biodegradability in a semi-pilot scale microcosm using indigenous microorganisms. More than 90% of 4-chlorophenol and 2,4,6-trichlorophenol, initially at 30 mg kg−1, were removed within 60 days and 30 mg pentachlorophenol kg−1 was completely degraded within 140 days. The chlorophenols were degraded more effectively under aerobic condition than under anaerobic condition. Soil moisture had a significant effect with the slowest degradation rate of chlorophenols at 25% in the range of 10–40% moisture content. At 25–40%, the rate of chlorophenol degradation was directly related to the soil moisture content, whereas at 10–25%, it was inversely related. Limited oxygen availability through soil agglomeration at 25% moisture content might decrease the degradation rate of chlorophenols. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biotechnology Letters Springer Journals

Effect of soil moisture on bioremediation of chlorophenol-contaminated soil

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References (15)

Publisher
Springer Journals
Copyright
Copyright © 2000 by Kluwer Academic Publishers
Subject
Chemistry; Biotechnology; Organic Chemistry; Bioorganic Chemistry; Biochemistry, general; Microbiology; Animal Anatomy / Morphology / Histology
ISSN
0141-5492
eISSN
1573-6776
DOI
10.1023/A:1005612232079
Publisher site
See Article on Publisher Site

Abstract

A chlorophenol-contaminated soil was tested for the biodegradability in a semi-pilot scale microcosm using indigenous microorganisms. More than 90% of 4-chlorophenol and 2,4,6-trichlorophenol, initially at 30 mg kg−1, were removed within 60 days and 30 mg pentachlorophenol kg−1 was completely degraded within 140 days. The chlorophenols were degraded more effectively under aerobic condition than under anaerobic condition. Soil moisture had a significant effect with the slowest degradation rate of chlorophenols at 25% in the range of 10–40% moisture content. At 25–40%, the rate of chlorophenol degradation was directly related to the soil moisture content, whereas at 10–25%, it was inversely related. Limited oxygen availability through soil agglomeration at 25% moisture content might decrease the degradation rate of chlorophenols.

Journal

Biotechnology LettersSpringer Journals

Published: Oct 9, 2004

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