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Title: Adsorption of hexavalent chromium from aqueous solution by using activated red mud

Abstract

Adsorption by activated red mud (ARM) is investigated as a possible alternative to the conventional methods of Cr(VI) removal from aqueous synthetic solutions and industrial effluents. Adsorption characteristics suggest the heterogenous nature of the adsorbent surface sites with respect to the energy of adsorption. Various factors such as pH, contact time, Cr(VI) concentration, amount of adsorbent, and temperature are taken into account, and promising results are obtained. The applicability of the Langmuir as well as Freundlich adsorption isotherms for the present system is tested. The loading factor (i.e., milligrams Cr(VI) adsorbed per gram of ARM) increased with initial Cr(VI) concentration, whereas a negative trend was observed with increasing temperature. The influence of the addition of anions on the adsorption of Cr(VI) depends on the relative affinity of the anions for the surface and the relative concentrations of the anions.

Authors:
; ;
Publication Date:
Research Org.:
Regional Research Lab., Bhubaneswar (IN)
OSTI Identifier:
20013599
Resource Type:
Journal Article
Journal Name:
Journal of Colloid and Interface Science
Additional Journal Information:
Journal Volume: 217; Journal Issue: 1; Other Information: PBD: 1 Sep 1999; Journal ID: ISSN 0021-9797
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; CHROMIUM; ADSORPTION; AQUEOUS SOLUTIONS; ADSORBENTS; CHEMICAL EFFLUENTS; WASTE WATER; WATER TREATMENT

Citation Formats

Pradhan, J., Das, S.N., and Thakur, R.S. Adsorption of hexavalent chromium from aqueous solution by using activated red mud. United States: N. p., 1999. Web. doi:10.1006/jcis.1999.6288.
Pradhan, J., Das, S.N., & Thakur, R.S. Adsorption of hexavalent chromium from aqueous solution by using activated red mud. United States. doi:10.1006/jcis.1999.6288.
Pradhan, J., Das, S.N., and Thakur, R.S. Wed . "Adsorption of hexavalent chromium from aqueous solution by using activated red mud". United States. doi:10.1006/jcis.1999.6288.
@article{osti_20013599,
title = {Adsorption of hexavalent chromium from aqueous solution by using activated red mud},
author = {Pradhan, J. and Das, S.N. and Thakur, R.S.},
abstractNote = {Adsorption by activated red mud (ARM) is investigated as a possible alternative to the conventional methods of Cr(VI) removal from aqueous synthetic solutions and industrial effluents. Adsorption characteristics suggest the heterogenous nature of the adsorbent surface sites with respect to the energy of adsorption. Various factors such as pH, contact time, Cr(VI) concentration, amount of adsorbent, and temperature are taken into account, and promising results are obtained. The applicability of the Langmuir as well as Freundlich adsorption isotherms for the present system is tested. The loading factor (i.e., milligrams Cr(VI) adsorbed per gram of ARM) increased with initial Cr(VI) concentration, whereas a negative trend was observed with increasing temperature. The influence of the addition of anions on the adsorption of Cr(VI) depends on the relative affinity of the anions for the surface and the relative concentrations of the anions.},
doi = {10.1006/jcis.1999.6288},
journal = {Journal of Colloid and Interface Science},
issn = {0021-9797},
number = 1,
volume = 217,
place = {United States},
year = {1999},
month = {9}
}