巯基树脂吸附银的行为及机理

作     者：吴香梅 熊春华 舒增年 

作者机构：丽水师范专科学校化学系浙江丽水323000 杭州商学院食品生物与环境工程学院浙江杭州310035 

出 版 物：《化工学报》 (CIESC Journal)

年 卷 期：2003年第54卷第10期

页      面：1466-1469页

核心收录：

学科分类：080603[工学-有色金属冶金] 07[理学] 0817[工学-化学工程与技术] 08[工学] 0806[工学-冶金工程] 0703[理学-化学] 

基　　金：浙江省高校中青年学科带头人基金 浙江省自然科学基金资助项目(No 2 0 0 0 72 )~~ 

主　　题：巯基树脂 银 吸附 机理 

摘      要：The adsorption behavior and mechanism of a novel thiol resin for Ag(Ⅰ) were investigated Experimental results showed that the statically saturated sorption capacity was 639 mg·g -1 resin at pH=4 5 in the HNO 3 NaAc medium Ag(Ⅰ) adsorbed on the thiol resin could be eluted with (5%～10%) (NH 2) 2CS-1 0mol·L -1 HCl and elution percentage was over 95% The resin could be regenerated and reused without apparent decrease of adsorption capacity The adsorption behavior obeyed the Freundlich isotherm The apparent adsorption rate constant was k 25℃ =1 56×10 -5 s -1 The enthalpy change Δ H of sorption was 40 2 kJ·mol -1 The functional group molar ratio to Ag(Ⅰ) was about 1∶1 and the mechanism of adsorption was examined by IR