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Chromium (VI) sorption on quaternized rice hulls


Low, Kun She and Lee, Chnoong Kheng and Ng, A. Y. (1997) Chromium (VI) sorption on quaternized rice hulls. Journal of Environmental Science and Health - Part A: Environmental Science and Engineering and Toxicology, 32 (6). pp. 1849-1860. ISSN 1093-4529; ESSN: 1532-4117


The sorption of Cr(VI) from synthetic solution and electroplating waste by quaternized rice hulls was investigated under laboratory conditions to assess its potential in removing Cr(VI). The results show that quaternized rice hulls provided higher sorption capacity and a more workable pH range as compared to the untreated rice hulls. From the Langmuir isotherm the maximum sorption capacity of Cr(VI) was 32.3 mg/g at pH 4.82 at 25°C. Column studies showed that Cr(VI) and Cu(ll) from electroplating waste could be successfully removed or reduced using a combination of untreated and quaternized rice hulls. The effect of different anions on the sorption capacity of quarternized rice hulls was discussed.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
DOI Number: https://doi.org/10.1080/10934529709376648
Publisher: Marcel Dekker
Keywords: Electroplating waste; Hexavalent chromium; Quaternized rice hulls; Sorption
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 17 May 2016 07:54
Last Modified: 17 May 2016 07:54
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/10934529709376648
URI: http://psasir.upm.edu.my/id/eprint/35784
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