Study of the surface adsorption properties of feldspar

被引：5

作者：

Dobrowolski, R

Stefaniak, E

Bilinski, B

Staszczuk, P

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, Analyt Lab, PL-20031 Lublin, Poland

[2] Catholic Univ Lublin, Fac Math & Sci, Dept Chem, PL-20031 Lublin, Poland

[3] Marie Curie Sklodowska Univ, Fac Chem, Dept Interfacial Phenomena, PL-20031 Lublin, Poland

[4] Marie Curie Sklodowska Univ, Fac Chem, Dept Physicochem Solid Surfaces, PL-20031 Lublin, Poland

来源：

ADSORPTION SCIENCE & TECHNOLOGY | 1999年 / 17卷 / 02期

关键词：

D O I：

10.1177/026361749901700201

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The adsorption properties of Polish feldspar towards hydrocarbons from the gaseous phase have been studied and the adsorption energy distribution functions for n-octane, benzene and toluene are presented. It appears that there are three types of adsorption sites present on the feldspar surface examined. Treatment of feldspar with aqua regia led to the elimination of low-energy interaction centres. The adsorption properties of the raw and leached feldspar with respect to Cr-VI ions have also been studied. The kinetic curves for the sorption of Cr-VI ions exhibited two stages which suggest two different mechanisms of sorption. The adsorption capacity depended on the pH with a maximum for pH = 4.8. The excess adsorption isotherm of Cr-VI on the raw feldspar surface showed a maximum value at 20 mmol/dm(3) equilibrium concentration of Cr-VI ions.

引用

页码：73 / 83

页数：11

共 24 条

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