Hexavalent Chromium Removal Using A Low-Cost Activated Carbon Adsorbent From Areca Catechu
No Thumbnail Available
Date
2011
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Removal of heavy metals from industrial wastewater is of primary importance because they
are not only causing contamination of water bodies and are also toxic to many life forms. In
recent years various heavy metals are removed from solution using natural low cost
adsorbents which are economically viable. The present study is aimed at removing hexavalent
chromium from aqueous solution using activated carbon from Areca catechu. The effect of
variation of initial concentration of Cr (VI) solution, variation of pH and dosage of adsorbent
on the adsorption potential of Cr(VI) have been studied. The results of the study have
been interpreted in terms of Langmuir adsorption isotherm and Freundlich adsorption isotherm.
The adsorption of Cr (VI) onto activated carbon from Areca catechu was found to
be concentration dependent. The maximum removal of Cr (VI) was observed at pH 2. The
adsorption Cr(VI) using activated carbon prepared from the Areca catechu shell followed
Langmuir and Freundlich adsorption isotherms.