Ion-specific repulsive interactions in colloidal silica dispersions evidenced through osmotic compression measurements and implication in frontal ultrafiltration experiments

Jean-Luc Trompette (1) , Michael J. Clifton (1) , Patrice Bacchin (1)

1 LGC - Laboratoire de Génie Chimique

Comparative osmotic compression experiments were performed on colloidal silica dispersions in the presence of various chloride salts at the same 0.01Mconcentration with different counterions and highlighted the influence of ionic specificity on the resistance to water removal. These results were complemented with frontal ultrafiltration measurements that demonstrate modulation of the permeate flux according to the salt used.

Mots clés: Ionic specificity; Colloidal silica dispersions; Osmotic compression; Frontal ultrafiltration

Mots clés: Ionic specificity; Colloidal silica dispersions; Osmotic compression; Frontal ultrafiltration

Domaines: Génie chimique

Jean-Luc Trompette, Michael J. Clifton, Patrice Bacchin. Ion-specific repulsive interactions in colloidal silica dispersions evidenced through osmotic compression measurements and implication in frontal ultrafiltration experiments. Journal of Colloid and Interface Science, 2005, 2 (2), pp.455-461. ⟨10.1016/j.jcis.2005.04.081⟩. ⟨hal-00201139⟩