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Evaluation of natural coagulants for direct filtration

DSpace at IIT Bombay

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Title Evaluation of natural coagulants for direct filtration
 
Creator MANDLOI, M
CHAUDHARI, S
FOLKARD, GK
 
Subject particle-size
contact filtration
alzheimers-disease
aluminum
removal
water
natural coagulants
direct filtration
water quality
 
Description In the present study surjana (Moringa oleifera) seed, maize (Zea mays) and chitosan were used in direct filtration of Bilaoli lake water and evaluated for their efficiency in removing turbidity and microorganisms from water. The experiments with these natural coagulants gave filtered water turbidity less than or almost equal to 1NTU and thereby met the turbidity criteria for drinking water as per WHO guidelines. Bilaoli lake water had low ionic strength and low turbidity which represents one of the most difficult raw waters to treat, but natural coagulants in direct filtration achieved good filtrate quality. The head loss development across the filter bed with chitosan was more than that of alum, while with maize it was comparable to that of alum. With M. oleifera seeds the head loss was much less in comparison to alum. The average most probable number (MPN) reductions obtained with M. oleifera seeds, maize and chitosan were 97.35%, 95.4% and 87.1% respectively, whereas, with alum it was only 7.7%.
 
Publisher SELPER LTD, PUBLICATIONS DIV
 
Date 2011-08-29T03:46:36Z
2011-12-26T12:58:23Z
2011-12-27T05:48:07Z
2011-08-29T03:46:36Z
2011-12-26T12:58:23Z
2011-12-27T05:48:07Z
2004
 
Type Article
 
Identifier ENVIRONMENTAL TECHNOLOGY, 25(4), 481-489
0959-3330
http://dx.doi.org/10.1080/09593332508618457
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11945
http://hdl.handle.net/10054/11945
 
Language en