Evaluation of natural phillipsite and chabazite as cation exchangers for copper and zinc

被引：33

作者：

Colella, C

De' Gennaro, M

Langella, A

Pansini, M

机构：

[1] Univ Naples Federico II, Dipartimento Ingn Mat & Prod, I-80125 Naples, Italy

[2] Univ Sassari, Fac Sci, Ist Policattedra Sci Geol Mineral, I-07100 Sassari, Italy

[3] Univ Salerno, Fac Sci, Dipartimento Sci Fis, I-82020 Paduli, BN, Italy

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1998年 / 33卷 / 04期

关键词：

chabazite; phillipsite; ion exchange; copper; zinc;

D O I：

10.1080/01496399808544991

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chabazite and phillipsite, two zeolites widespread in many volcaniclastic deposits in central-southern Italy, were evaluated as cation exchangers for the removal of copper and zinc from aqueous solution. Equilibrium and kinetics of copper and zinc exchange reactions for sodium were investigated in order to verify the selectivity and the uptake rate of both zeolites for these heavy metals. Thermodynamic quantities, such as equilibrium constant, K-a, and Delta G degrees, as well as rate constant, K, were computed, and they showed that Na-chabazite displays a moderate selectivity and a favorable kinetics for copper, whereas in ail the other cases uses in wastewater treatment are not recommended.

引用

页码：467 / 481

页数：15