Development of Alamine-336-Impregnated Alginate Capsule for Selective Recovery of Gold from Multi-Metal Solution

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In this study, we developed Alamine-336-impregnated alginate capsule (Alamine-336-AC) by using a simple method. Alamine-336 was used as a model solvent extractant because it has good selectivity toward gold. Alamine-336-AC was prepared at different ratios of A (mixture of 1% CaCl2 and 2.5% carboxymethyl cellulose) and B (Alamine-336) solutions. A comparative study revealed that the ratio of 9:1 (A:B) was the best condition for fabricating Alamine-336-AC. Microscope images revealed that Alamine-336 was well dispersed in the Alamine-336-AC. The maximum of gold uptake by Alamine-336-AC was 284.1 mg/g, which was about 5 times higher than those of Pt and Pd. Kinetics of adsorption was also investigated.

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552-555

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October 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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