NA-CA2(+) EXCHANGE EFFECTS IN THE DETACHMENT OF LATEX COLLOIDS DEPOSITED IN GLASS BEAD POROUS-MEDIA()

Authors
ROY SB DZOMBAK DA
Citation
Sb. Roy et Da. Dzombak, NA-CA2(+) EXCHANGE EFFECTS IN THE DETACHMENT OF LATEX COLLOIDS DEPOSITED IN GLASS BEAD POROUS-MEDIA(), Colloids and surfaces. A, Physicochemical and engineering aspects, 119(2-3), 1996, pp. 133-139
Citations number
13
Categorie Soggetti
Chemistry Physical
Journal title
Colloids and surfaces. A, Physicochemical and engineering aspects → ACNP
ISSN journal
09277757
Volume
119
Issue
2-3
Year of publication
1996
Pages
133 - 139
Database
ISI
SICI code
0927-7757(1996)119:2-3<133:NEEITD>2.0.ZU;2-D
Abstract
The detachment of latex colloids deposited in packed glass-bead column s was observed under conditions where the ionic strength was reduced a nd ion exchange between Na+ and Ca2+ occurred. For identical influent solutions producing colloid release, it was found that deposited collo ids in equilibrium with Ca2+ were released less readily than those in equilibrium with Na+. For influent solutions at the same reduced ionic strength with Ca2+ or Na+, colloid release was lower when Ca2+ ions w ere present. These phenomena cbn be explained by the selectivity of la tex surfaces for Ca2+ over Na+ ions as observed in Na+-Ca2+ exchange e xperiments.