2009•Environmental ChemistryRequires access

ADSORPTION OF ANTIMONY(III)ON MONTMORILLONITE,KAOLINITE AND GOETHITE: EFFECT OF PH AND IONIC STRENGTH

Jianhong Xi, Mengchang He

Abstract

The adsorption and desorption of Sb(Ⅲ)on montmorillonite,kaolinite and goethite were investigated at different pH and ionic strength.Results indicated that Sb(Ⅲ)adsorption decreased with the increase of pH. On the other hand,the effect of ionic strength on Sb(Ⅲ)adsorption was slight.The desorption of Sb(Ⅲ)was low.The adsorption capacity of three minerals for Sb(Ⅲ)had significantly differences.The montmorillonite had much greater Sb(Ⅲ)adsorption capacity than the other two minerals.The goethite had slight greater adsorption capacity than kaolinite.

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Key concepts: Kaolinite, Goethite, Adsorption, Ionic strength, Montmorillonite, Desorption, Chemistry, Inorganic chemistry