Precipitation and Solubility of Calcium Soaps in Basic Aqueous Media

Journal of Colloid and Interface Science
Davide BeneventiAlessandro Gandini

Abstract

Measurements of the surface tension of aqueous media containing calcium salts of different fatty acids, whose structure only varied by the number of C=C unsaturations along their aliphatic chains, showed that their solubility increased as a function of this parameter going from near zero for calcium stearate to 4x10(-4) mol l(-1) for the linolenate homologue. The solubility product of the calcium soap corresponding to each tested fatty acid was estimated by using the anionic fatty acids adsorption isotherms in order to obtain the amount of dissolved ionic fatty acid at increasing concentration of calcium ions. These findings are discussed in terms of their serious repercussions on the operations related to flotation deinking in waste paper recycling. Copyright 2001 Academic Press.

Citations

Jan 21, 2014·Advances in Colloid and Interface Science·Johan SjöblomZhenghe Xu
Aug 12, 2014·Dairy Science & Technology·Solène Le MauxThomas Croguennec
Apr 29, 2014·Journal of Environmental Management·Patrick HuberMichel Petit-Conil
Sep 16, 2015·Journal of Oleo Science·Yoshiaki YamamotoYoshimune Nonomura
Jul 28, 2004·Journal of Colloid and Interface Science·Elisa ZenoBruno Carré
Aug 29, 2012·Journal of Agricultural and Food Chemistry·Solène Le MauxAndré Brodkorb
Apr 17, 2018·Physical Chemistry Chemical Physics : PCCP·Bethany A Wellen RuddHeather C Allen
Apr 20, 2012·Physical Chemistry Chemical Physics : PCCP·Rui F P PereiraHugh D Burrows

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