Applications of Copolymer 8-Hydroxyquinoline 5-SulphonicAcid-Oxamide-Formaldehyde Resin-IV in Water Purification

Copolymer resin (8-hq5-saof-iv) synthesized by the condensation of8-hydroxyquinoline5-sulphonic acid and oxamide with formaldehyde in the presence of acidcatalyst, was proved to be selective chelating ion-exchange copolymer for certain metals. thechelating ion-exchange properties of this copolymer were studied for fe (iii), cu (ii), ni (ii),co (ii), zn (ii), cd (ii) and pb (ii) ions in the form of their metal nitrate solutions. a batchequilibrium method was employed in the study of the selectivity of metal ion uptake involvedin the measurements of the distribution of a given metal ion between the copolymer sampleand a solution containing the metal ion. the study was carried out over a wide ph range,shaking time and in media of various ionic strengths of different electrolytes. the copolymershowed a higher selectivity for fe (iii), cu (ii), and ni (ii) ions than for co (ii), zn (ii),cd (ii) and pb (ii) ions. distribution ratios (d) of metal ions were found to be increased byincreasing ph of the solutions; hence the resin can be used to recover certain metal ions fromwaste solutions and used for the purpose of purification of waste water and removal of ironfrom boiler water. the ion-exchange capacity of metal ions has also been determinedexperimentally and compare with other commercial resins. the morphology of the copolymerwas studied by scanning electron microscopy (sem); showing amorphou