Adsorption Performance for Ag(І) of an Ethoxycarbonyl Thiourea Chelating Resin

Abstract:

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Effects of initial concentration of Ag(І), concentration of HNO3, contact time and adsorption temperature on adsorption capacities of a novel polystyrene modified ethoxycarbonyl thiourea resin were investigated, and the maximum adsorption capacity of Ag(І) reached 4.11 mmol·g-1. The adsorption kinetics was well fitted Boyd’s diffusion equation of liq·uid film, so the adsorption was controlled by liquid film diffusion. The experimental date fitted Langmuir equation, and the correlation coefficient was close to 1. The positive value of adsorption enthalpy ΔH is indicative of an endothermic process. FT-IR characteristic peaks of ethoxycarbonyl and thiourea groups changed obviously fore-and-aft adsorption, which means that the corresponding functional groups coordinate with Ag during the adsorption process.

Info:

Periodical:

Advanced Materials Research (Volumes 311-313)

Edited by:

Zhongning Guo

Pages:

1077-1080

DOI:

10.4028/www.scientific.net/AMR.311-313.1077

Citation:

S. Wang et al., "Adsorption Performance for Ag(І) of an Ethoxycarbonyl Thiourea Chelating Resin", Advanced Materials Research, Vols. 311-313, pp. 1077-1080, 2011

Online since:

August 2011

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$35.00

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