Agar-immobilized Metal Sulfides and Their Sorption Power with Respect to Ag(I) Ions

摘要

Thin-film systems based on sulfides of various p and d elements (MS) efficiently sorb noble and toxic metals from wastewater and spent process solutions by the ion-exchange mechanism.Previously such systems were prepared in most cases by chemical deposition of metal sulfides in the form of microcrystalline films on various supports (cellulose [1],cellulose triacetate [2],glass [3]).All these sorbents are characterized by micrometric particle size,which limits their performance in sorption of noble and toxic metals,if for no other reason than long sorption time.