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Column study on the sorption of Cr(VI) using quaternized rice hulls


Citation

Low, Kun She and Lee, Chnoong Kheng and Ng, A. Y. (1999) Column study on the sorption of Cr(VI) using quaternized rice hulls. Bioresource Technology, 68 (2). pp. 205-208. ISSN 0960-8524

Abstract / Synopsis

The potential of quaternized rice hulls in removing Cr(VI) from synthetic solution, chrome electroplating waste and wood preservative waste was investigated in column experiments. Increase in column bed depth resulted in a longer service time at C(t)/C0 = 0.5 breakthrough. The presence of SO2−4, which is commonly present in the wastes, interfered with the sorption process and resulted in earlier breakthrough. The sorption process was flow-rate independent within the scope of this study. In the regeneration study, Cr(VI) could be recovered almost quantitatively by eluting with a 0.5 M NaOH solution and the column could be used repeatedly for at least five cycles.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
DOI Number: https://doi.org/10.1016/S0960-8524(98)00128-X
Publisher: Elsevier Science
Keywords: Sorption; Desorption; Cr(VI); Quaternized rice hulls; Column study
Depositing User: Nabilah Mustapa
Date Deposited: 23 Jan 2018 14:13
Last Modified: 23 Jan 2018 14:13
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/S0960-8524(98)00128-X
URI: http://psasir.upm.edu.my/id/eprint/58569
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