Romoval of Zinc Ion from Aqueous Solution by Adsorption onto Solidifying Landfilled Sludge

Abstract:

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In this paper, the removal behaviour of Zn2+ from aqueous solution by adsorption onto solidifying landfilled sludge and its mechanism were studied. The results showed that Zn2+ adsorption capacity reached optimum when initial pH was 3.0. When initial Zn2+ concentration was150mg/L, the removal efficiency could reach more than 90% with dosage of solidifying landfilled sludge being 6g/L. Moreover, the adsorption isotherm could conform to Freundlich equations best. The desorption ratio for adsorbed Zn2+ reached above 90% by HCl solution with pH value being 1.0, however, it was only about 10% despite of EDTA concentration. FTIR analysis showed that main site for Zn2+ adsorption onto solidifying landfilled sludge was Me-O group from metal oxide and hydroxyl group from fatty alcohol.

Info:

Periodical:

Advanced Materials Research (Volumes 343-344)

Edited by:

David Wang

Pages:

62-66

DOI:

10.4028/www.scientific.net/AMR.343-344.62

Citation:

W. Q. Zhu et al., "Romoval of Zinc Ion from Aqueous Solution by Adsorption onto Solidifying Landfilled Sludge", Advanced Materials Research, Vols. 343-344, pp. 62-66, 2012

Online since:

September 2011

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Price:

$35.00

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