Record Details

Effect of carbon source on PCE dehalogenation

DSpace at IIT Bombay

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Field Value
 
Title Effect of carbon source on PCE dehalogenation
 
Creator PRAKASH
GUPTA, SK
 
Subject reductive dechlorination
methanogenic conditions
acetobacterium-woodii
tetrachloroethylene
tetrachloromethane
trichloroethylene
biotransformation
transformations
hydrocarbons
groundwater
 
Description A laboratory study using the upflow anaerobic sludge blanket reactor for treating high-strength wastewater containing tetrachloroethene (PCE) was carried out to study the effect of carbon source, recycle, and shock loading on dehalogenation of PCE and process performance. The PCE was dehalogenated to trichloroethylene, cis-1,2-dichloroethylene, vinyl chloride, and ethylene. During the study on the effect of carbon source, the PCE and COD removal up to 97% and biogas production of 0.518-0.47 m(3)/kg CODrem with methane content up to 66% were achieved under steady-state operating conditions. An increase in the influent COD from 2,000 to 4,000 mg/L did not show any improvement in the PCE removal. Recycling of effluent at 50% showed the decrease in COD removal and increase in the effluent concentration of dichloroethylene and vinyl chlorides. Around 1-3.5% of influent PCE stripping to biogas was observed. It was observed that methanol has the stimulatory effect on the dehalogenation of PCE. A shock loading study showed that the upflow anaerobic sludge blanket reactor could assimilate 1.5-2 times the original PCE concentration (50 mg/L) without much effect on the process performance.
 
Publisher ASCE-AMER SOC CIVIL ENGINEERS
 
Date 2011-07-18T11:39:39Z
2011-12-26T12:50:35Z
2011-12-27T05:36:12Z
2011-07-18T11:39:39Z
2011-12-26T12:50:35Z
2011-12-27T05:36:12Z
2000
 
Type Article
 
Identifier JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 126(7), 622-628
0733-9372
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4903
http://hdl.handle.net/10054/4903
 
Language en