Zirconium tri-ethylene tetra-amine ligand-chelator complex based cross-linked membrane for selective recovery of Cu2+ by electrodialysis

被引：14

作者：

Chakrabarty, Tina ^{[1
]}

Shah, Brijesh ^{[2
]}

Srivastava, Niharika ^{[1
]}

Shahi, Vinod K. ^{[1
]}

Chudasama, Uma ^{[2
]}

机构：

[1] CSIR, Cent Salt & Marine Chem Res Inst, Electromembrane Proc Div, Bhavnagar 364002, Gujarat, India

[2] Maharaja Sayajirao Univ Baroda, Fac Engn & Technol, Dept Appl Chem, Vadodara 390001, Gujarat, India

来源：

JOURNAL OF MEMBRANE SCIENCE | 2013年 / 428卷

关键词：

Cu2+ selective membrane; Chelating membranes; Electrodialysis; Selective Cu2+ separation; Electrochemical process for Cu2+ removal; ANION-EXCHANGE MEMBRANES; AQUEOUS-MEDIA; COPPER IONS; SOL-GEL; REMOVAL; ADSORPTION; TRANSPORT; PERMSELECTIVITY; SEPARATION; EXTRACTANT;

D O I：

10.1016/j.memsci.2012.10.056

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Cross-linked zirconium tri-ethylene tetra-amine (ZrT) chelating membranes were prepared by sol-gel method in aqueous media for selective removal of Cu2+ in presence of other bi-valent metal ions. Adsorption studies confirmed very high Cu2+ uptake in compare to other bi-valent metal ions (Ni2+, M2+, and Mn2+). UV-DRS spectra confirmed d-d transition band of Cu2+, centered in a pseudooctahedral environment. Developed ZrT membrane exhibited good thermal, mechanical, and chemical stabilities. Furthermore, conductivity and counter-ion transport studies of these membranes suggested their potential application for separating Cu2+ by electrodialysis. Electro-dialytic studies revealed very high Cu2+ flux across ZrT membranes in comparison with other bi-valent metal cations (Ni2+, and Mn2+). Selective recovery of Cu2+ in the membrane phase was attributed to its structural morphologies. Furthermore, high separation factor for separating Cu2+/Ni2+, Cu2+/Zn2+, and Cu2+/Mn2+, suggested practical applications of ZrT chelating membranes for recovery Cu2+ from industrial waste water. (C)12 Elsevier B.VAll rights reserved.

引用

页码：462 / 469

页数：8