Regenerating of consuming ion-exchange resin by graft polymerization for steam boiler wastewater treatment

The cationic sulfonated polystyrene resin is consumed in the production process of water desalting to produce deionized water used to generate steam boilers in different industries. Our target is to reactivate the consumed cationic resin by the grafting process of o-aminobenzoic acid, p-aminobenzoic acid, and acrylamide monomer. The grafting process causes an increasing efficiency of the grafted consumed resin from 54.34% to 55.37%, 56.20%, and 63.22% respectively in removing the boiler's wastewater hardness. The result of grafted consumed resin with acrylamide is engorging to increase the chain length of acrylamide monomer grafted on the resin by free-radical polymerization using benzoyl peroxide initiator in a dry N-2 atmosphere. It increases the efficiency of the consumed resin grafted with polyacrylamide to 83.68%. The same sequence is correct for removing hydrazine used in steam boilers, for metal protection, with efficiency, reaches 100%. Fourier transform infrared spectroscopy confirms evidence of successful grafting processes.