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ADSORPTION OF Mg(II) ION FROM AQUEOUS SOLUTION ON CHITOSAN BEADS AND CHITOSAN POWDER

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Author(s): Sari Edi Cahyaningrum1,*, Narsito2, Sri Juari Santoso2 and Rudiana Agustini1

Journal: Journal of Coastal Development
ISSN 1410-5217

Volume: 13;
Issue: 3;
Start page: 179;
Date: 2010;
Original page

Keywords: Chitosan beads | Mg(II) | Adsorption | chitosan powder

ABSTRACT
A basic investigation on the removal of Mg(II) ion from aqueous solution by chitosan beads wasconducted in a batch adsorption system. The influence of different experimental parameters; pH,agitation period and different concentration of Mg(II) ion was evaluated. A pH 7.0 was found to be anoptimum pH for Mg(II) adsorption onto chitosan powder and chitosan beads. The Langmuir andFreundlich adsorption isotherm models were applied to describe the isotherms and isotherm constantsfor the adsorption of Mg(II) onto chitosan powder and chitosan beads. Results indicated that Mg(II)uptake could be described by the Langmuir adsorption model. The maximum adsorption capacities ofMg(II) ion onto chitosan powder and chitosan beads were 7.20 and 17.39 mol g−1, respectively. Therate of adsorption Mg(II) on chitosan powder and chitosan beads were 16.0.10-4 min-1 and 48.00 . 10-4min-1, respectively.
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