Chelation ion-exchange properties of copolymer derived from 4-hydroxyacetophenone, oxamide and formaldehyde

✍ Scribed by W.B. Gurnule; P.K. Rahangdale; L.J. Paliwal; R.B. Kharat

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 365 KB
• Volume: 45
• Category: Article
• ISSN: 0960-8974
• DOI: 10.1016/s0960-8974(02)00037-2

✦ Synopsis

A copolymer (4-HAOF) prepared by condensation of 4hydroxyacetophenone and oxamide with formaldehyde in the presence of an acid catalyst proved to be a selective chelating ion-exchange copolymer for certain metals. Chelating ion-exchange properties of this copolymer were studied for Fe3+, Ct?, N?+, Co*+, Zn*+, Cd*+, Pb*+ and Hg*+ ions. A batch equilibrium method was employed in the study of the selectivity of metal ion uptake involving the measurements of the distribution of a given metal ion between the copolymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The copolymer showed higher selectivity for Fe3+ ions than for Co*+ , Zn*+, Cd*+, Pb*+, Cu*+, Ni*+ and Hg*+ ions.