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Arsenic and iron removal from water using constructed soil filter - a novel approach

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Title Arsenic and iron removal from water using constructed soil filter - a novel approach
 
Creator NEMADE, P
KADAM, AM
SHANKAR, HS
 
Subject municipal waste-water
ground-water
aqueous-solution
drinking-water
coated sand
adsorption
manganese
oxide
equilibrium
kinetics
arsenite
oxidation
constructed soil filter
adsorption
hydrous ferric oxide
 
Description Arsenic poisoning is a global problem. It is known that groundwater in Bangladesh and West Bengal predominantly contains As(III) and concentrations of Fe(II) which are often too low for removal of arsenic in optimum quantities. To eliminate arsenic from drinking water, several basic methods Such as coagulation, adsorption. ion exchange. filtration. membrane processes, are reported. To deal with this issue on a small to large scale. we present a novel approach to remove arsenic and iron from water by constructed soil filter (CSF). In CSF. As (III) is oxidized to As(V) by media via natural oxidation and subsequently, arsenic is co-precipitated with iron. Here water containing arsenic, iron, and phosphate is passed through the CSF media at the rate of 100 ml/min. Results show a mean residence time of 8.6 min and a holdup of 1.851. Results of six runs show that with initial As(III) of 300 mu g/l and iron concentration of 5-10 mg/l. residual arsenic levels below 10 ppb and residual iron
 
Publisher JOHN WILEY & SONS INC
 
Date 2011-08-04T10:44:31Z
2011-12-26T12:54:41Z
2011-12-27T05:42:51Z
2011-08-04T10:44:31Z
2011-12-26T12:54:41Z
2011-12-27T05:42:51Z
2008
 
Type Article
 
Identifier ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, 3(5), 497-502
1932-2143
http://dx.doi.org/10.1002/apj.173
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9334
http://hdl.handle.net/10054/9334
 
Language en