Electrochemical Removal of Boron from Water: Adsorption and Thermodynamic Studies
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Electrochemical Removal of Boron from
Water: Adsorption and Thermodynamic Studies
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| Creator |
Vasudevan, S.
Lakshmi, J. |
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| Subject |
Electroinorganic
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| Description |
The present work provides an electrochemical removal of boron from water and its kinetics, thermodynamics, isotherm using mild steel and
stainless steel as anode and cathode respectively. The various operating parameters on the removal efficiency of boron were investigated, such
as initial boron ion concentration, initial pH, current density and temperature. The results showed that the optimum removal efficiency of 93.2%
was achieved at a current density of 0.2 A dm−2 at pH of 7.0. First-, second-order rate equations, Elovich and Intraparticle models were applied to
study adsorption kinetics. Adsorption isotherms of boron on Fe(OH)3 were determined and correlated with isotherm equations such as Langmuir,
Freundlich and D-R models. Thermodynamic parameters, such as standard Gibb’s free energy (G◦), standard enthalpy (H◦) and standard entropy
(S◦), were also evaluated by Van’t Hoff equation. The adsorption process follows second-order kinetics. The adsorption of boron preferably fits
with Langmuir adsorption isotherm suggesting monolayer coverage of adsorbed molecules. The adsorption of boron onto Fe(OH)3 was found to
be spontaneous and endothermic
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| Publisher |
Wiley
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| Date |
2012
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3110/1/060-2012.pdf
Vasudevan, S. and Lakshmi, J. (2012) Electrochemical Removal of Boron from Water: Adsorption and Thermodynamic Studies. The Canadian Journal of Chemical Engineering, 90. pp. 1017-1026. ISSN 0008-4034 |
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| Relation |
http://www.wileyonlinelibrary.com
http://cecri.csircentral.net/3110/ |
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