Separation of Lead and Copper Ions in Acidic Media Using an Ion-Exchange Resin with a Thiourea Functional Group

被引：19

作者：

Elfeghe, Salem ^{[1
]}

Sheng, Qiuyue ^{[1
,2
]}

Zhang, Yahui ^{[1
]}

机构：

[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, St John, NL A1B 3X5, Canada

[2] Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Liaoning, Peoples R China

来源：

ACS OMEGA | 2022年 / 7卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

HEAVY-METAL IONS; AQUEOUS-SOLUTION; SELECTIVE REMOVAL; PB(II); ADSORPTION; CD(II); ZN(II); CU(II); PRECONCENTRATION; BIOSORBENT;

D O I：

10.1021/acsomega.2c00417

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This research studied the selective separation of lead and copper ions in acidic solutions using Puromet MTS 9140 resin with a thiourea functional group. The effects of operation metal concentration, and temperature, on metal ion exchange were investigated using batch-test protocols. Ion-exchange experimental data were analyzed with Langmuir, Freundlich, and Temkin models. The results demonstrate that the MTS 9140 resin has ionexchange selectivity for copper ions over lead ions. The ionexchange recovery of Cu exceeded 95%, while Pb coloading was under 19% with MTS 9140 resin dosage of 0.070 g/mL in the pH range of 2.5 to 4.5. The kinetic studies showed that the ion exchange process could be better described by the pseudo-second-order model for lead and copper ions. The temperature dependence indicates the endothermic nature of the ion-exchange process. The resin also showed potential application as an effective adsorbent for removing heavy metal ions in water or wastewater treatment.

引用

页码：13042 / 13049

页数：8