F O Bryant, D D Hale, J E Rogers
Index: Appl. Environ. Microbiol. 57(8) , 2293-301, (1991)
Full Text: HTML
The reductive dechlorination of pentachlorophenol (PCP) was investigated in anaerobic sediments that contained nonadapted or 2,4- or 3,4-dichlorophenol (DCP)-adapted microbial communities. Adaptation of sediment communities increased the rate of conversion of 2,4- or 3,4-DCP to monochlorophenols (CPs) and eliminated the lag phase before dechlorination was observed. Both 2,4- and 3,4-DCP-adapted sediment communities dechlorinated the six DCP isomers to CPs. The specificity of chlorine removal from the DCP isomers indicated a preference for ortho-chlorine removal by 2,4-DCP-adapted sediment communities and for para-chlorine removal by 3,4-DCP-adapted sediment communities. Sediment slurries containing nonadapted microbial communities either did not dechlorinate PCP or did so following a lag phase of at least 40 days. Sediment communities adapted to dechlorinate 2,4- or 3,4-DCP dechlorinated PCP without an initial lag phase. The 2,4-DCP-adapted communities initially removed the ortho-chlorine from PCP, whereas the 3,4-DCP-adapted communities initially removed the para-chlorine from PCP. A 1:1 mixture of the adapted sediment communities also dechlorinated PCP without a lag phase. Dechlorination by the mixture was regiospecific, following a para greater than ortho greater than meta order of chlorine removal. Intermediate products of degradation, 2,3,5,6-tetrachlorophenol, 2,3,5-trichlorophenol, 3,5-DCP, 3-CP, and phenol, were identified by a combination of cochromatography (high-pressure liquid chromatography) with standards and gas chromatography-mass spectrometry.
Structure | Name/CAS No. | Molecular Formula | Articles |
---|---|---|---|
![]() |
3,4-Dichlorophenol
CAS:95-77-2 |
C6H4Cl2O |
Microbial degradation of xenobiotic, aromatic pollutants in ...
1988-07-01 [Appl. Environ. Microbiol. 54(7) , 1864-7, (1988)] |
Oxidation of 2,4-dichlorophenol and 3,4-dichlorophenol by me...
2011-02-01 [Water Res. 45(5) , 2038-48, (2011)] |
In Silico Improvement of beta3-peptide inhibitors of p53 x h...
2009-05-13 [J. Am. Chem. Soc. 131(18) , 6356-7, (2009)] |
Effect of ambient oxygen concentration upon the acute toxici...
1992-10-01 [Ecotoxicol. Environ. Saf. 24(2) , 131-43, (1992)] |
Degradation of chlorophenols by Phanerochaete chrysosporium:...
2002-07-01 [Appl. Microbiol. Biotechnol. 59(2-3) , 284-8, (2002)] |
Home | MSDS/SDS Database Search | Journals | Product Classification | Biologically Active Compounds | Selling Leads | About Us | Disclaimer
Copyright © 2024 ChemSrc All Rights Reserved