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OLS Field Name OLS Field Data
Main Title Reductive Dechlorination of Dichlorophenols in Anaerobic Pond Sediments (Chapter 13).
Author Hale, D. D. ; Rogers, J. E. ; Wiegel, J. ;
CORP Author Environmental Research Lab., Athens, GA. ;Technology Applications, Inc., Athens, GA. ;Georgia Univ., Athens.
Publisher c1991
Year Published 1991
Report Number EPA/600/D-91/230;
Stock Number PB92-101708
Additional Subjects Dechlorination ; Water pollution sampling ; Sediments ; Microbial degradation ; Anaerobic processes ; Chemical properties ; Physical properties ; Molecular structure ; pH ; Oxidation reduction reactions ; Environmental persistence ; Phenols ; Ecosystems ; Sediment-water interfaces ; Aquatic microorganisms ; Freshwater ; Aromatic compounds ; Biodeterioration ; Reprints ; Phenol/dichloro
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NTIS  PB92-101708 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/24/1992
Collation 14p
Abstract The time required for the microbially mediated dechlorination of chloroaromatics in anaerobic freshwater sediments may be dependent upon sediment microbial communities and physical characteristics, as well as chlorine position on the aromatic ring. To better understand such possible relationships, the authors studied the reductive dechlorination of three dichlorophenol isomers in anaerobic sediments collected every other month for a year from five sites in one pond. Numbers of specific dechlorinating microorganisms were estimated by a most proable number technique, and sediment temperature, pH, Eh, and organic carbon content were determined. Levels of dissolved organic carbon, sulfate, and nitrate also were quantified in water samples collected with the anaerobic sediments. The relative susceptibility of the 2,4-, 2,5-, and 3,4- isomers to dechlorination was determined in sediment slurries. Dechlorination to monochlorophenols required from 2 to more than 32 weeks for completion, with the relative rates being 2,4->2,5->3,4-. The number of specific dechlorinating microbes appears to be important in determining the time required for the transformation.
Supplementary Notes Pub. in Organic Substances and Sediments in Water. Volume 3. Biological, p211-222 1991. See also PB90-263922. Prepared in cooperation with Technology Applications, Inc., Athens, GA., and Georgia Univ., Athens.
NTIS Title Notes Book chapter.
Title Annotations Reprint: Reductive Dechlorination of Dichlorophenols in Anaerobic Pond Sediments (Chapter 13).
Category Codes 68D; 57K; 57H; 57B; 48G; 99F
NTIS Prices PC A03/MF A01
Primary Description 600/01
Document Type NT
Cataloging Source NTIS/MT
Control Number 133917680
Origin NTIS
Type CAT