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Effectiveness of coagulation and acid precipitation processes for the pre-treatment of diluted black liquor

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Title Effectiveness of coagulation and acid precipitation processes for the pre-treatment of diluted black liquor
 
Creator GARG, A
MISHRA, IM
CHAND, S
 
Subject catalytic wet oxidation
chemical oxygen-demand
paper-mill effluent
color removal
alcohol distillery
energy recovery
waste-water
pulp-mills
lignin
wastewaters
acid precipitation
coagulation
energy recovery
pulp and paper wastewater
settling characteristics
 
Description The effectiveness of coagulation (using aluminium-based chemicals and ferrous sulfate) and acid precipitation (using H(2)SO(4)) processes for the pre-treatment of diluted black liquor obtained from a pulp and paper mill is reported. Commercial alum was found to be the most economical among all the aluminium and ferrous salts used as a coagulant. A maximum removal of chemical oxygen demand (COD) (ca. 63%) and colour reduction (ca. 90%) from the wastewater (COD = 7000 mg l(-1)) at pH 5.0 was obtained with alum. During the acid precipitation process, at pH
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-24T21:46:44Z
2011-12-26T12:48:21Z
2011-12-27T05:48:19Z
2011-07-24T21:46:44Z
2011-12-26T12:48:21Z
2011-12-27T05:48:19Z
2010
 
Type Article
 
Identifier JOURNAL OF HAZARDOUS MATERIALS, 180(1-3), 158-164
0304-3894
http://dx.doi.org/10.1016/j.jhazmat.2010.04.008
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6548
http://hdl.handle.net/10054/6548
 
Language en