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Amberlyst 15 resin has been used to the study of fixation of copper, nickel and zinc ions. The fixation has been carried out either in water or in organic solvents or in the proportional mixture. Also, the addition of Trioctyl phosphine oxide as an extractant agent was examined. It has been observed that the use of organic solvents reduced that fixation of ions except the case of 25% of organic solvent and 75% of water. Further more, the fixation of metals at this proportions seems to be followed the sequence Ni2+ > Cu2+ > Zn2+.
Moreover, the impregnation of cation exchange resin with trioctylphosphine oxide at different experimental conditions was realized. Concentrations of extractant, solvent, and immersion period were examined. FTIR spectroscopy was employed to the surface characterization purposes. The isotherm of adsorption of trioctylphosphine oxide was followed using UV spectrum at 280 nm of maximum absorption and the determination of ions was made by atomic absorption spectroscopy and conductivity measurements.
The changing of ions exchange resin selectivity after impregnation in different mixtures of cited above compounds was evaluated by the calculation of separation factors and maximum ion exchange capacity.
Key words: Amberlyst 15, selectivity, TOPO, surface modification, impregnation
References
M. Amara et H. Kerdjoudj, Hydrometallurgy, 65 (2002) pp. 59-68
M. Amara et H. Kerdjoudj, Talanta, 60(5) (2003) 991-1001
M. Amara et H. Kerdjoudj, Analytica chimica acta, 508 (2004) 247-253
M. Amara et H. Kerdjoudj, Desalination, 168 (2004) 195-200
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