Removal of Hexavaleiit Chromium from aqueous solution using an eco-friendly activated carbon adsorbent
No Thumbnail Available
Date
2010
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The present study is focused on removal o f hexavalent chromium from aqueous solution using an
eco-friendly adsorbent, activated carbon prepared from the pods o f Delonix regia. The effect of
optimum dosage, pH and initial concentration o f adsorbate on the effective removal of
hexavalent chromium has been studied. The results o f the study show the adsorption o f Cr(VI) to
be concentration and pH dependent. The maximum removal o f Cr(VI) was observed at pH 2.
Removal o f Cr(VI) increased from 70.58% to -100% with increasing adsorbent dosage from 50
to 200 mg. The adsorption process was found to obey Langmuir adsorption isotherm and
Freundlich adsorption isotherm. Hence the use of the low cost carbon prepared is o f practical
importance and is expected to be economical.