Electrolyte Anion Affinity and Its Effect on Oxyanion Adsorption on Goethite

¹Department of Environmental Sciences, Subdepartment of Soil Science and Plant Nutrition, Wageningen University, Wageningen, 6700 EC, The Netherlands

Journal of Colloid and Interface Science

|August 16, 2000

Abstract:

The influence of various types of background electrolytes (NaCl, NaNO(3), and NaClO(4)) on the proton adsorption and on the adsorption of sulfate and phosphate on goethite have been studied. Below the PZC the proton adsorption on goethite decreases in the order Cl>NO(3)>ClO(4). The decreasing proton adsorption affects the adsorption of oxyanions on goethite. Anion adsorption of strongly binding polyvalent anions is lower in the studied electrolytes in the order Cl

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Abstract:

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