Adsorption behavior of silver onto alumina modified with dithiooxamide: process optimization, kinetics and equilibrium

A number of supports have been widely used for the removal of trace metal ions from variousmatrices. The most prominent among the supports used are activated carbon, [1], sodiumdodecyl sulfate (SDS) coated on alumina [2], modified chromosorb [3]. Among theseadsorbents, alumina is an important place in the removal studies of heavy metal ions. When amodifier is immobilized at the surface of alumina, the removal mechanism has changed. Thetarget metal is not only removed by adsorption on the surface of the alumina but it could beremoved by a surface attraction/chemical-bonding phenomenon on the newly addedchemicals. The purpose of this work is to investigate the feasibility of absorption of Ag+ ionson SDS coated on alumina modified with dithiooxamide.