Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 159, Issue 2-3, Pages 380-384Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2008.02.059
Keywords
Chromium; Arsenic; Activated carbon
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The simultaneous adsorption of hexavalent chromium (Cr(VI)) and trivalent arsenic (As(III)) in single component and binary systems has been studied by activated carbon (AC). The capacity of Cr(VI) in the single experiment is greater than that of As(III) onto AC. The effects of various parameters like initial concentration, pH and temperature have been considered in the experiment. Cr(VI) removal is pH dependent and found to be maximum at pH 2.0. While. As(III) is found to be maximum at pH 7.0 in the single adsorption experiment. In the binary adsorption of As(III), the uptake of As(III) is generally higher than the single uptake. In the single adsorption the maximum adsorption rate of As(III) is 34% and in the binary metal mixtures the maximum adsorption rate of As(III) is 40% while the initial concentration is 5 mg/L So in the binary system the Cr(VI) and As(III) are thought to be synergistic with respect to the single As(III) situation. (C) 2008 Elsevier B.V. All rights reserved.
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