Extraction de l'argent par des gels d'acide polyacrylique-polyacrylate de sodium. Application à l'élimination des ions chlorures

Extraction of silver by gels of sodium polyacrylic-polyacrylate acid. Application: elimination of chloride anions. The extraction of silver from diluted aqueous solutions by gels of sodium polyacrylic-polyacrylate acid was studied. The study of pH variations shows that the extraction is done by cation-cation exchange process. The highest loading of the gel by silver is obtained at R(moles of Ag+ fixed by the gel/moles of -COO(H, Na)) = 0.75. The silver gel loaded allows the recovery of ions chlorides from the aqueous solutions. To cite this article: E.H. Rifi et al., C. R. Chimie 8 (2005).