Effect of kinetic synergist on transport of copper(II) through a liquid membrane containing P-507 in kerosene

Citation
Ds. He et al., Effect of kinetic synergist on transport of copper(II) through a liquid membrane containing P-507 in kerosene, CAN J CHEM, 79(8), 2001, pp. 1213-1219
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE
ISSN journal
0008-4042 → ACNP
Volume
79
Issue
8
Year of publication
2001
Pages
1213 - 1219
Database
ISI
SICI code
0008-4042(200108)79:8<1213:EOKSOT>2.0.ZU;2-Q
Abstract
A new kinetic synergism system for copper(II) transport through a bulk liqu id membrane containing mono(2-ethyhexyl)-2-ethyhexyl phosphate and Manoxol OT (OT) was examined. The influence of stripping agent, anion, pH in feed p hase, and carrier concentration were investigated. The kinetics of Cu(II) t ransport could be analyzed in the formalism of two consecutive irreversible first-order reactions, considering both extraction and stripping. The pseu do-first-order apparent rate constants of interfacial reactions in membrane transport are determined by altering the temperature. The activation energ y values are 38.1 kJ mol(-1) for extraction and 32.8 kJ mol(-1) for strippi ng. The experiments demonstrated that Manoxol OT is a good kinetic synergis t for Cu(II) transport through liquid membranes in this study. The kinetic synergism of OT for extraction of Cu2+ ions is analyzed.