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Biodegradation of 1,1,2,2-tetrachloroethane in Upflow Anaerobic Sludge Blanket (UASB) reactor

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Title Biodegradation of 1,1,2,2-tetrachloroethane in Upflow Anaerobic Sludge Blanket (UASB) reactor
 
Creator BASU, D
GUPTA, SK
 
Subject methanogenic conditions
biotransformation
degradation
biodegradation
hydraulic retention time (hrt)
upflow anaerobic sludge blanket (uasb)
1,1,2,2-tetrachloroethane (1,1,2,2-teca)
 
Description This study examines the performance of bench-scale Upflow Anaerobic Sludge Blanket (UASB) reactor in treating simulated wastewaters containing 1,1,2,2-tetrachloroethane (TeCA). Reactors R1 (control) and R2 (containing TeCA) were operated at Hydraulic Retention Times (HRTs) of 36, 30, 24, 18 and 12 In. The removal of TeCA decreased from 99.85% to 98.40% as the HRT was lowered down from 36 to 12 h. The maximum TeCA dechlorination rate and the half velocity coefficient were 0.2 d(-1) and 18.58 mg TeCA/l, respectively. The Organic Loading Rate (OLR) was varied from 1.5 to 3.1 kg/m(3)/d to yield various substrate: co-substrate ratios and the overall removal of TeCA throughout this study was more than 99%. The average effluent TeCA concentration at optimum HIRT (24 h) and substrate: co-substrate ratio (100: 1) was less than 0.1 mg/l. The granules within the reactor were 0.1-3.2 mm in size with a heterogeneous bacterial population. (C) 2009
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-21T21:34:22Z
2011-12-26T12:52:11Z
2011-12-27T05:39:13Z
2011-07-21T21:34:22Z
2011-12-26T12:52:11Z
2011-12-27T05:39:13Z
2010
 
Type Article
 
Identifier BIORESOURCE TECHNOLOGY, 101(1), 21-25
0960-8524
http://dx.doi.org/10.1016/j.biortech.2009.06.074
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6001
http://hdl.handle.net/10054/6001
 
Language en