Ion-specific repulsive interactions in colloidal silica dispersions evidenced through osmotic compression measurements and implication in frontal ultrafiltration experiments.
Comparative osmotic compression experiments were performed on colloidal silica dispersions in the presence of various chloride salts at the same 0.01 M concentration 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.
Laboratoire de Génie Chimique UMR5503, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France. jeanluc.trompette@ensiacet.fr
J L
JL
Trompette
M J
MJ
Clifton
P
P
Bacchin