Influence of surface ionization on the adsorption of aqueous mercury chlorocomplexes by activated carbons

被引：28

作者：

Carrott, PJM ^{[1
]}

Carrott, MMLR ^{[1
]}

Nabais, JMV ^{[1
]}

机构：

[1] Univ Evora, Dept Quim, Colegio Luis Antonio Verney, P-7000 Evora, Portugal

来源：

CARBON | 1998年 / 36卷 / 1-2期

关键词：

activated carbon; adsorption; surface properties;

D O I：

10.1016/S0008-6223(97)00145-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption of aqueous mercury species from chloride solutions on a number of activated carbons has been studied. It was found that whereas the adsorption of neutral HgCl2 or positive Hg2+ was very low, significant quantities of the tetrachloromercury(II) complex, HgCl42- were adsorbed. Adsorption isotherms of this complex were measured at different pH values, and the results analysed by the Langmuir equation and by a simple surface ionization and specific adsorption model in order to obtain estimates of the adsorption stoichiometry and the mean free energy of adsorption. (C) 1997 Elsevier Science Ltd.

引用

页码：11 / 17

页数：7

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