Selective adsorption of Au3+ from aqueous solutions using persimmon powder‐formaldehyde resin. Issue 6 (3rd July 2013)

• Record Type: Journal Article
• Authors: Xie, Feng; Fan, Zaijun; Zhang, Qinglin; Luo, Zhengrong
• Is Part Of: Journal of applied polymer science. Volume 130:Issue 6(2013:Dec. 15)
• Page Start: 3937
• Page End: 3946
• Publication Date: 2013-07-03
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.39521
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>A new adsorption resin has been developed by immobilizing persimmon powder with formaldehyde, and its adsorption properties to Au³⁺ were investigated in detail. The resin exhibited outstanding selective adsorption capacity towards Au³⁺ from acidic aqueous solutions (pH 2.0), which the equilibrium adsorption capacity was high up to 3025.20 mg g⁻¹ at 323 K. The resin exhibited 100% adsorption of Au³⁺ within 8 h, and the experimental data were well fitted with the pseudo‐first/second‐order rate model. The adsorption isotherms could be well described by Freundlich equation. The column studies suggested that the resin was effective for the adsorption of Au³⁺ from aqueous solutions, and the loaded Au³⁺ could be easily desorbed by acidic thiourea solution. The adsorption of Au³⁺ was an endothermic reductive adsorption process. This suggested that the resin can be used as an active biosorbent for the recovery of Au³⁺ from aqueous environment. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3937–3946, 2013</p> </abstract>