IONIC POTENTIAL EFFECT ON SPECIFIC ABSORPTION CATION SUSPENSIONS AND SILT LATERITE CARBONATED
Abstract
Specific adsorption of cations on lateric mineral and CaCO3surfaces has been investigated with adsorption experiments by the electrolyte adition method and potentiometric titration technique. Reactive CaCO3 and three samples from the pressured acid leaching process (PAL): two laterite samples and an industrial carbonated suspension were chosen, and its suspensions were prepared using distilled water and two types of industrial medium: crude water, and thickener water overflow. The starting point of the analysis was the experiment adsorption data and a set of stability curves and its corresponding points of zero charge values (p.z.c). With the industrial medium all cations studied produce a shift in the p.z.c. It could be verified that the preferential specific adsorption of cations and it influence on the shift in the p.z.c show a dependence relation with the Ionic Potential of adsorbed cations.
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