Synthesis of hydrogel beads based on tragacanth gum and graphene oxide through radical polymerization: study of Ca+2 and Mg+2 removal from drinking water

Water is an essential resource for the survival of all living organisms.in this research ,we try to remove heavy metal ion from drinking water.In this study , the structure of the tragacanth gum (GT) as a natural polymer has been modified through polymerization of 2-acrylamide-2-methylpropane sulfonic acid (AMPS) and then its nanocomposite has been prepared with graphene oxide nano sheet (GO). In the preparation of hydrogel, glutar aldehyde (GA) has been used as crosslinker in different weight ratio with the monomer. The prepared of hydrogel beads were used for adsorption of metal ion such as calcium and magnesium ions in drinking water. The effect of experimental condition such as pH, time ,amount of adsorbent, and concentration of metal ion on the adsorption capacity were investigated and the best bead determined.