Breakthrough analysis for hexavalent chromium removal from drinking water in a fixed bed column

The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the ent...

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Bibliographic Details
Published in:Water science & technology. Water supply 2009-12, Vol.9 (6), p.661-670
Main Authors: DUBEY, S. P, GOPAL, K
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbents
Adsorption
Applied sciences
Aqueous solutions
Bark
Biological materials
Buildings. Public works
Carbon
Chromium
Drinking water
Endothermic reactions
Enthalpy
Entropy
Eucalyptus
Eucalyptus globulus
Exact sciences and technology
Fourier transforms
Free energy
Gibbs free energy
Hexavalent chromium
Removal
Water supply. Pipings. Water treatment
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Summary:The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were found to be 1.39 kJ mol−1 K−1, 1.08 kJ mol−1 and −3.85 kJ mol−1, respectively. Different chromium concentrations were used for the fixed bed adsorption studies. The pre- and post-treated adsorbents were characterized using a FTIR spectroscopic technique. It was concluded that Eucalyptus bark carbon column could be used effectively for removal of hexavalent chromium from aqueous solution at optimal column conditions. This study showed that this biological material is potential adsorbent of Cr(VI) from water.
ISSN:1606-9749
1607-0798
DOI:10.2166/ws.2009.714