巯基树脂吸附银的行为及机理

被引：21

作者：

吴香梅

熊春华

舒增年

机构：

[1] 丽水师范专科学校化学系

[2] 杭州商学院食品生物与环境工程学院

[3] 丽水师范专科学校化学系浙江丽水

[4] 浙江杭州

[5] 浙江丽水

来源：

化工学报 | 2003年 / 10期

基金：

浙江省自然科学基金;

关键词：

巯基树脂; 银; 吸附; 机理;

D O I：

暂无

中图分类号：

O647.3 [吸附];

学科分类号：

070304 ; 081704 ;

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 spectrometry

引用

页码：1466 / 1469

页数：4

共 4 条

[1] 大孔膦酸树脂对镉(Ⅱ)的吸附性能及其机理 [J].