Electrical Aspects of Adsorbing Colloid Flotation. VIII. Specific Adsorption of Ions by Flocs

Abstract

A Gouy-Chapman model of the solid-water interface with specific adsorption of ions is used to calculate surface and zeta potentials. The effects of sign and magnitude of ionic charge and surface charge density, ionic strength, specific binding energy, and temperature are examined. Experimental data on foam flotation of ferric hydroxide with sodium lauryl sulfate in the presence of a variety of anions support the model.