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Removal of chromium(VI) from solution by coconut husk and palm pressed fibres

Removal of chromium(VI) from solution by coconut husk and palm pressed fibres

Environmental Technology 14(3): 277-282

ISSN/ISBN: 0959-3330

DOI: 10.1080/09593339309385290

Removal of chromium(VI) from aqueous solutions by coconut husk fibres (CHF) and palm pressed fibres (PPF) was investigated using batch and column techniques. Batch tests showed that pH range for effective Cr(VI) removal was between 1.5 and 5 for CHF and between 1.5 and 3 for PPF. The adsorption capacities of CHF and PPF were estimated to be 29 and 14 mg Cr g-1 substrate at pH 2.0. In column studies, breakthrough curves of various columns containing PPF were obtained for various flow rates and bed-depths and the results were compared with Hutchin's model for adsorption column (1). The results of breakthrough curves of various columns containing mixed media of CHF or PPF in soil system demonstrated that both substrate could also be used as barriers in the landfill to maximize immobilization of toxic metals such as Cr(VI) in leachates.

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Accession: 009335812

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