Anaerobic biodegradation of trichloroethylene with the addition of sugar using activated carbon-fluidized beds
Anaerobic biodegradation of trichloroethylene (TCE) was carried out in a two-stage granular activated carbon fluidized bed bioreactor. The intermediate products were identified as: dichloroethylene (DCE), vinyl chloride (VC), 1,2-dichloroethane (DCA) and chloroethane (CA). Of the three geometric isomers of DCE, the trans-1,2 dichloroethylene (TDCE) was found to be the most predominant species. The production of DCA suggested a diverted reaction sequence from the conventional sequential reductive dechlorination pathway postulated in the past literature. CA was believed to be a product of VC and/or DCA. The co-substrate glucose was implicated for this reaction specificity. Based on our data and on other's work, a modified degradation pathway for TCE in anaerobic environment is postulated. The quantitative product of CA strongly implied a potential for complete mineralization of TCE under reductive conditions.
- Research Organization:
- New Jersey Inst. of Tech., Newark, NJ (USA)
- OSTI ID:
- 6789249
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHLORINATED ALIPHATIC HYDROCARBONS
BIODEGRADATION
GLUCOSE
METABOLISM
ACTIVATED CARBON
ANAEROBIC CONDITIONS
BIOREACTORS
PACKED BED
ADSORBENTS
ALDEHYDES
CARBOHYDRATES
CARBON
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HALOGENATED ALIPHATIC HYDROCARBONS
HEXOSES
MONOSACCHARIDES
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SACCHARIDES
560300* - Chemicals Metabolism & Toxicology