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RECORD NUMBER: 12 OF 39

OLS Field Name OLS Field Data
Main Title Degration of Selected Halogenated Ethanes in Anoxic Sediment-Water Systems.
Author Jafvert, C. T. ; Wolfe, N. L. ;
CORP Author Environmental Research Lab., Athens, GA.
Year Published 1987
Report Number EPA/600/J-87/273;
Stock Number PB88-180344
Additional Subjects Reprints ; Ethanes ; Degradation ; Halogenated ethanes ; Anoxic sediment water
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB88-180344 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/04/1988
Collation 13p
Abstract
The degradation of selected halogenated ethanes was studied in anoxic sediment-water suspensions at 1 to 20% sediment concentrations. Batch kinetic experiments were used to quantify decay. Eh measurements of all suspensions were below -100mV (vs SHE), indicating reduced environmental conditions. Hexachloroethane (HCA), 1,1,2,2-tetrachloroethane (TTCA), 1,2-diiodoethane (DIA) and 1,2-dibromoethane (DBA) were degraded within minutes to days, but 1,2-dichloroethane (DCA) remained in the system through 35 d, at which point the study was ended. The major route of transformation of these compounds in the system was vicinal dehalogenation. Rates of disappearance followed pseudo-first-order kinetics at low reactant concentrations and high sediment concentration.