A chelating resin with bis[2-(2-benzothiazolylthioethyl)sulfoxide]: Synthesis, characterization and properties for the removal of trace heavy metal ion in water samples.

A new chelating resin containing bis[2-(2-benzothiazolylthioethyl)sulfoxide] was synthesized using chloromethylated polystyrene as material and characterized by elemental analysis and infrared spectra. The adsorption capacities of the newly formed resin for Hg(2+), Ag(+), Cu(2+), Zn(2+), Pb(2+), Mn(2+), Ni(2+), Cd(2+) and Fe(3+) were investigated over the pH range 1.0-6.0. The resin exhibited no affinity for alkali or alkaline earth metal ions. The maximum adsorption capacities of the resin for Hg(2+), Ag(+), Cu(2+), Zn(2+), Pb(2+), Mn(2+), Ni(2+), Cd(2+) and Fe(3+) were 1.49, 0.96, 0.58, 0.11, 0.37, 0, 0.24, 0.36 and 0.25mmolg(-1), respectively. In column operation it had been observed that Hg(2+) and Ag(+) in trace quantity could be separated from different binary mixtures and Hg(2+) could be effectively removed from industrial wastewater and the natural water spiked with Hg(2+) at usual pH.