Study on Selective Removal of Impurity Iron from Leached Copper-Bearing Solution Using a Chelating Resin

被引：10

作者：

Li, Yubiao ^{[1
,2
,3
]}

Wang, Xinyu ^{[1
]}

Xiao, Qing ^{[3
]}

Zhang, Xu ^{[4
]}

机构：

[1] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China

[2] Hubei Key Lab Mineral Resources Proc & Environm, Wuhan 430070, Peoples R China

[3] Univ South Australia, Sch Nat & Built Environm, Mawson Lakes, SA 5095, Australia

[4] Hubei Environm Monitoring Ctr, Wuhan 430072, Peoples R China

来源：

MINERALS | 2016年 / 6卷 / 04期

基金：

中国国家自然科学基金;

关键词：

separation; chelating resin; adsorption isotherms; regeneration; CHALCOPYRITE DISSOLUTION; ACTIVATED CARBON; AQUEOUS-SOLUTION; KINETIC-MODELS; ADSORPTION; MECHANISMS; RECOVERY; SORPTION; SURFACE; OXIDE;

D O I：

10.3390/min6040106

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In order to selectively remove iron from copper laden solution after leaching but prior to electrowinning, equilibrium, kinetic, and thermodynamic studies have been conducted on an a chelating resin of Rexp-501 at pH 1.0 and at various temperatures. Both Langmuir and Freundlich models were investigated, with the Langmuir model proving to be more suitable for fitting iron removal performance, with little influence from copper concentration. Compared with the pseudo first order kinetic model, the pseudo second order kinetic model fitted the dynamic adsorption process better, indicating a chemisorption mechanism. Fourier transform infrared spectroscopy (FT-IR) results indicated that C=O from carbonyl group played a key role in combining with iron and can be regenerated and reused. However, the C=O of the acylamino group combining with iron was not able to be released after oxalic acid was applied.

引用

页数：12

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