✦ LIBER ✦

Thermodynamic investigation of the sorption of Fe3+ and Cu2+ ions by a fibrous polyampholyte

✍ Scribed by E. Terlemezian; S. Veleva; A. Arsov

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 366 KB
Volume: 41
Category: Article
ISSN: 0323-7648
DOI: 10.1002/actp.1990.010410110

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✦ Synopsis

Abstract

The sorption of Fe^3+^ and Cu^2+^ ions on a fibrous polyampholyte synthesized by modification of PAN fibres with EDA is studied by thermodynamic methods. The endothermic adsorption process and the positive change of the entropy of the system with the established effect of compensation between Δ__H__ and Δ__S__ are an indication for the complicated mechanism of the chemisorption with complex formation. The complexes formed with the both ions are different. The __p__H value of the metal salt solutions affect strongly on the adsorption process. At __p__H > 2 sorption of Cu^2+^ dominates, while at lower __p__H values sorption of Fe^3+^ prevails.

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