Effect of mixed solvent on selective removal of lead (II) ions by dicyclohexano-18-crown-6 from aqueous solutions containing heavy metals

Authors

  • Stella Dernini,

    Corresponding author
    1. Dipartimento di Iingegneria Chimica e Materiali, Universita' degli Studi di Cagliari, Piazza d'Armi, 09123 Cagliari, Italy
    • Dipartimento di Iingegneria Chimica e Materiali, Universita' degli Studi di Cagliari, Piazza d'Armi, 09123 Cagliari, Italy
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  • Annalisa Loi,

    1. Dipartimento di Iingegneria Chimica e Materiali, Universita' degli Studi di Cagliari, Piazza d'Armi, 09123 Cagliari, Italy
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  • Simona Palmas,

    1. Dipartimento di Iingegneria Chimica e Materiali, Universita' degli Studi di Cagliari, Piazza d'Armi, 09123 Cagliari, Italy
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  • Anna M. Polcaro

    1. Dipartimento di Iingegneria Chimica e Materiali, Universita' degli Studi di Cagliari, Piazza d'Armi, 09123 Cagliari, Italy
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Abstract

The effect of the organic solvent on the transport of lead ions through a bulk liquid membrane containing dicyclohexano-18-crown-6 (DC18C6) as carrier was studied. Chloroform, 1,2-dichloroethane, chlorobenzene, nitrobenzene and their binary solutions were employed as solvents. SCN-, NO3-, CI- and CH3COO- were used as anions. The selectivity and the efficiency of lead transport from aqueous solutions containing other cations such as Ni2+, Cu2+, Co2+, and Zn2+ were also investigated.

Abstract

On a étudié l'effet du solvant organique sur le transport d'ions de plomb dans une membrane liquide contenant du dicyclohexano-18-crown-6 (DC18C6) comme agent de transport. Le chloroforme, le 1,2-dichloroéthane, le chlorobenzène, le nitrobenzène et leurs solutions binaires ont servi de solvants. Le SCN-, le NO3-, le CI- et le CH3COO- ont servi d'anions. On a également étudié la sélectivité et l'efficacité du transport de plomb à partir de solutions aqueuses contenant d'autres cations tels que Ni2+, Cu2−, Co2+ et Zn2+.

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