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Heavy metals in the environment Part III. Anion exchange properties of poly‐4‐vinyl pyridine from acid chloride solutions
Author(s) -
Chaudhary Abdul J.,
Donaldson John D.,
Grimes Susan M.,
Boddington Stephen C.
Publication year - 1994
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280600404
Subject(s) - pyridine , metal , extraction (chemistry) , chemistry , chloride , vinyl chloride , metal ions in aqueous solution , inorganic chemistry , base (topology) , base metal , weak base , nuclear chemistry , materials science , organic chemistry , copolymer , metallurgy , polymer , mathematical analysis , mathematics , welding
Abstract The metal extractive properties of poly‐4‐vinyl pyridine, prepared in the free base form, were studied for Cu 2+ , Ni 2+ , Co 2+ , Zn 2+ and Cd 2+ in chloride solutions. The efficiency of metal extraction depended on the pH and composition of the solutions. For maximum metal extraction, the optimum initial pH of the solution was found to be within the range 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 chloride concentration of the solution was increased. A similar effect was found with all resin‐active metals when experiments were carried out in solutions containing high concentrations of KCl.