Electrochemical Coagulation for Chromium Removal: Process Optimization, Kinetics, Isotherms and Sludge Characterization
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Electrochemical Coagulation for Chromium
Removal: Process Optimization, Kinetics, Isotherms
and Sludge Characterization
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| Creator |
Vasudevan, S.
Lakshmi, J. Vanathi, R. |
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| Subject |
Electroinorganic
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| Description |
This study presents an electrochemical coagulation process for the removal of chromium
from water using magnesium as the anode and galvanized iron as the cathode.
The effects of pH, current density, concentration, temperature, adsorption kinetics
and adsorption isotherms on chromium removal were investigated. The results
showed that an optimum removal efficiency of 98.6% was achieved at a current density
of 0.2 A/dm2 and a pH of 7.0. The adsorption kinetics showed that the first order
rate expression fitted the adsorption kinetics. The equilibrium isotherm was measured
experimentally. Results were analyzed by Langmuir, Freundlich, Dubinin-
Redushkevich and Frumkin isotherms using linearized correlation coefficients. The
characteristic parameters for each isotherm were determined. The Langmuir adsorption
isotherm was found to fit the equilibrium data best for chromium adsorption.
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/186/1/2010-021.pdf
Vasudevan, S. and Lakshmi, J. and Vanathi, R. (2010) Electrochemical Coagulation for Chromium Removal: Process Optimization, Kinetics, Isotherms and Sludge Characterization. Clean, 38 (1). 9 -16. |
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| Relation |
http://cecri.csircentral.net/186/
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