Studies on the Removal of Arsenate by Electrochemical Coagulation Using Aluminum Alloy Anode
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Studies on the Removal of Arsenate by
Electrochemical Coagulation Using Aluminum
Alloy Anode
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| Creator |
Vasudevan, S.
Lakshmi, J. Sozhan, G. |
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| Subject |
Electroinorganic
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| Description |
The removal of arsenate from aqueous solution was carried out by electrochemical
coagulation using aluminum alloy as anode and stainless steel as cathode. Various
operating parameters on the removal efficiency of arsenate were investigated, such as
initial arsenate ion concentration, initial pH, current density, and temperature.
Effect of coexisting anions such as silicate, fluoride, phosphate, and carbonate were
studied on the removal efficiency of arsenate. The optimum removal efficiency of
98.4% was achieved at a current density of 0.2 A/dm2 at a pH of 7.0. The experimental
data were tested against different adsorption isotherm models for describing the
electrochemical coagulation process. The adsorption of arsenate preferably fitting
the Langmuir adsorption isotherm suggests monolayer coverage of adsorbed molecules.
First and second order rate equations were applied to study adsorption kinetics.
The adsorption process follows second order kinetics model with good correlation.
Temperature studies showed that adsorption was endothermic and spontaneous in
nature.
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| Publisher |
WILEY-VCH Verlag GmbH & Co.
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| Date |
2010
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/196/1/2010-023.pdf
Vasudevan, S. and Lakshmi, J. and Sozhan, G. (2010) Studies on the Removal of Arsenate by Electrochemical Coagulation Using Aluminum Alloy Anode. Clean – Soil, Air, Water, 38 (5-6). pp. 506-515. ISSN 1863-0650 |
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| Relation |
http://cecri.csircentral.net/196/
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