Complexion between Polyacrylamide and metal cations and its sorption of Phosphate

Polyacrylamide hydrogels were prepared with an exothermic free radical polymerization method With n,n’- methelene bisacrilamide as cross linker & AIBN as initiator. The hydrogels were participated in complex formation reaction with metal cations and Phosphate solutions with different concentrations were prepared. IR spectrum was used for investigation of complex formation and phosphate adsorption kinetics also was investigated with UV spectrophotometer. Comprising of hydrogel complexes with “copper and nickel, to ferrous” showed that: Complexes with copper and nickel had relatively higher adsorption than ferrous complex and maximum adsorption was observed after 6 hours from beginning. The adsorption was increased with increasing of phosphate concentration.