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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6061

Title: Effect of influent pH and alkalinity on the removal of chlorophenols in sequential anaerobic-aerobic reactors
Authors: MAJUMDER, PS
GUPTA, SK
Keywords: uasb reactor
reductive dechlorination
decolorization
performance
bicarbonate
bioreactor
digestion
dye
Issue Date: 2009
Publisher: ELSEVIER SCI LTD
Citation: BIORESOURCE TECHNOLOGY, 100(5), 1881-1883
Abstract: This study was carried out to determine the effect of influent pH and alkalinity on the performance of sequential UASB and RBC reactors for the removal of 2-CP and 2.4-DCP from two different simulated wastewaters. The performance of methanogens at low (<6.0) to high (>8.0) pH values and at sufficiently high alkalinity (1500-3500 mg/l as CaCO(3)) is described in this paper. Sequential reactors were capable of handling wastewaters with influent pH, 5.5-8.5. However, with influent pH 7.0 +/- 0.1 UASB reactor showed best performance for 2-CP (99%) and 2,4-DCP (88%) removals. Increase in alkalinity/COD ratio in the influent (>1.1) caused gradual decrease in the chlorophenol removal in UASB reactors. The UASB reactors could not tolerate wastewater with higher alkalinity/COD ratio (2.6) and showed significant deterioration of its performance in terms of chlorophenols removal achieving only 74.7% 2-CP and 60% 2,4-DCP removals, respectively. (C) 2008
URI: http://dx.doi.org/10.1016/j.biortech.2008.10.002
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6061
http://hdl.handle.net/10054/6061
ISSN: 0960-8524
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