NOVEL D2EHPA-SILSESQUIOXANE-BASED SORBENT FOR METALLIC CATIONS SEPARATION

摘要

The development of materials for effective and economical waste treatment which incorporate selective extractants is nowadays an interesting alternative to overcome traditional separation methods drawbacks. In this work the extractant bis(2-ethylhexyl) hydrogenphosphate(D2EHPA) entrapped in a silsesquioxane has been prepared, characterized and used for Pb(II), Cd(II), Cu(n) and Zn(II) separation from several media. The sorption properties of the material were evaluated in batch experiments. The high loading capacities together with desorption and kinetic data suggest this sorbent to be a promising material for Pb(II), Cd(H), and Zn(H) removal depending on aqueous media composition.