SORPTION BEHAVIOR OF MICROAMOUNTS OF ZINC ON TITANIUM-OXIDE FROM AQUEOUS-SOLUTIONS

被引：11

作者：

HASANY, SM ^{[1
]}

CHUGHTAI, FA ^{[1
]}

GHAFFAR, A ^{[1
]}

机构：

[1] UNIV AGR FAISALABAD,DEPT CHEM,FAISALABAD,PAKISTAN

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1991年 / 26卷 / 08期

关键词：

D O I：

10.1080/01496399108050519

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of microamounts of zinc on titanium oxide, prepared and characterized in this laboratory, has been studied in detail. Zinc adsorption has been found to be dependent on the pH of the aqueous solution, amount of oxide, and zinc concentration. Maximum adsorption is from pH 10 buffer. EDTA and cyanide ions inhibit adsorption significantly. The adsorption of other elements under optimal conditions has also been measured on this oxide. Sc(III) and Cs(I) show almost negligible adsorption. Zinc adsorption follows the linear form of the Freundlich adsorption isotherm: log C(Ads) = log A + (1/n) log C(Bulk) with A = 0.48 mol/g and n = 1. Except at a very low bulk concentration (3 x 10(-5) mol/dm3), the Langmuir adsorption isotherm is also linear for the entire zinc concentration investigated. The limiting adsorbed concentration is estimated to be 0.18 mol/g.

引用

页码：1131 / 1146

页数：16

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