Microwave assisted synthesis of polyacrylamide grafted gum ghatti and its application as flocculant

► Polyacrylamide grafted gum ghatti was synthesized by microwave assisted method. ► Higher the percentage grafting of the graft co polymer, higher is its intrinsic viscosity. ► The graft copolymer proved superior flocculant in kaolin suspension and in wastewater. ► The optimized flocculant dosage as found in kaolin suspension was 0.8 ppm.