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

✍ Scribed by P.J.M. Carrott; M.M.L.Ribeiro Carrott; J.M.V. Nabais

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
695 KB
Volume
36
Category
Article
ISSN
0008-6223

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✦ Synopsis

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 HgCl, or positive Hg'+ was very low, significant quantities of the tetrachloromercury(I1) complex, HgCI$-, 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.

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