UPTAKE OF LEAD AND CADMIUM BY CLINOPTILOLITE

被引：78

作者：

MALLIOU, E ^{[1
]}

LOIZIDOU, M ^{[1
]}

SPYRELLIS, N ^{[1
]}

机构：

[1] NATL TECH UNIV ATHENS,DEPT CHEM ENGN,5 IROON POLYTECH ST,ZOGRAPHOU CAMPUS,GR-147 ATHENS,GREECE

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 1994年 / 149卷 / 03期

关键词：

METAL REMOVAL; METAL UPTAKE; ION EXCHANGE; ZEOLITES; LEAD; CADMIUM;

D O I：

10.1016/0048-9697(94)90174-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The ion exchange systems of lead and cadmium, using the zeolite cinlinoptilolite, were examined. The metal uptake is increased with increasing temperature. At low temperatures the exchange of lead is mainly with the sodium ions but at higher temperatures potassium present in the zeolite lattice can be replaced, increasing the metal uptake. In the case of cadmium, the exchange occurs only with sodium ions, irrespective of the temperature of the solution. The zeolite particle size influences significantly the metal uptake. An increase is observed with decreasing particLe size. From the experimental results the diffusion coefficients and activation energies of the ion exchange systems are calculated.

引用

页码：139 / 144

页数：6

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