INFLUENCE OF SURFACE-IONIZATION ON THE ADSORPTION OF AQUEOUS MERCURY CHLOROCOMPLEXES BY ACTIVATED CARBONS

Authors
CARROTT PJM CARROTT MMLR NABAIS JMV
Citation
Pjm. Carrott et al., INFLUENCE OF SURFACE-IONIZATION ON THE ADSORPTION OF AQUEOUS MERCURY CHLOROCOMPLEXES BY ACTIVATED CARBONS, Carbon, 36(1-2), 1998, pp. 11-17
Citations number
19
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Carbon → ACNP
ISSN journal
00086223
Volume
36
Issue
1-2
Year of publication
1998
Pages
11 - 17
Database
ISI
SICI code
0008-6223(1998)36:1-2<11:IOSOTA>2.0.ZU;2-#
Abstract
The adsorption of aqueous mercury species from chloride solutions on a number of activated carbons has been studied. It was found that where as the adsorption of neutral HgCl2 or positive Hg2+ was very low, sign ificant quantities of the tetrachloromercury(II) complex, HgCl42- were adsorbed. Adsorption isotherms of this complex were measured at diffe rent 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.