HEAVY-METALS IN THE ENVIRONMENT .3. ANION-EXCHANGE PROPERTIES OF POLY-4-VINYL PYRIDINE FROM ACID CHLORIDE SOLUTIONS

Citation
Aj. Chaudhary et al., HEAVY-METALS IN THE ENVIRONMENT .3. ANION-EXCHANGE PROPERTIES OF POLY-4-VINYL PYRIDINE FROM ACID CHLORIDE SOLUTIONS, Journal of chemical technology and biotechnology, 60(4), 1994, pp. 353-358
Citations number
13
Categorie Soggetti
Engineering, Chemical",Chemistry,"Biothechnology & Applied Migrobiology
ISSN journal
02682575
Volume
60
Issue
4
Year of publication
1994
Pages
353 - 358
Database
ISI
SICI code
0268-2575(1994)60:4<353:HITE.A>2.0.ZU;2-P
Abstract
The metal extractive properties of poly-4-vinyl pyridine, prepared in the free base form, were studied for Cu2+, Ni2+, Co2+, Zn2+ and Cd2+ i n chloride solutions. The efficiency of metal extraction depended on t he pH and composition of the solutions. For maximum metal extraction, the optimum initial pH of the solution was found to be within the rang e of 0.8 to 1.2 for W(R)/V ratios of 45 000-50 000 mg dm-3. The metal extractive power of the resin was found to increase as the metal chlor ide concentration of the solution was increased. A similar effect was found with all resin-active metals when experiments were carried out i n solutions containing high concentrations of KCl.