Removal of Zinc and Cadmium Ions Using a Cross-linked Polyaminophosphonate

被引：8

作者：

Al Hamouz, Othman Charles S. ^{[1
]}

Ali, Shaikh A. ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY | 2013年 / 50卷 / 04期

关键词：

Adsorption; cross-linked polyaminophosphonate; heavy metal ions; HEAVY-METAL IONS; AQUEOUS-SOLUTION; ZWITTERIONIC HYBRIDS; TRANSITION-METALS; ADSORPTION; POLYMER; MONTMORILLONITE; COMPLEXES; MEMBRANES; SPECTROSCOPY;

D O I：

10.1080/10601325.2013.768110

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A cross-linked polyzwitterionic acid (CPZA) containing aminophosphonic acid motifs was synthesized via cyclocopolymerization of diallylaminomethylphosphonic acid and cross-linker 1,1,4,4-tetraallylpiperazinium dichloride (10mol%) using tert-butylhydroperoxide as the initiator. The CPZA upon treatment with NaOH was converted to a cross-linked anionic polyelectrolyte (CAPE 5). The adsorption of Zn2+ and Cd2+ on CAPE 5 showed that the experimental data fit the Lagergren second-order kinetic model and Langmuir, as well as Freundlich isotherm models. The adsorption capacity of Zn2+ was found to be higher than that of Cd2+, and the adsorption process was spontaneous and endothermic in nature. The low activation energy of 11.3 and 9.3 kJ/mol for Zn2+ and Cd2+, respectively indicated the adsorptions as a favorable process. The resin demonstrated excellent adsorption efficiency in removing the metal ions from aqueous solution.

引用

页码：375 / 384

页数：10

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