4.7 Article

New reactive ionic liquids as carriers in polymer inclusion membranes for transport and separation of Cd(II), Cu(II), Pb(II), and Zn(II) ions from chloride aqueous solutions

Journal

JOURNAL OF MEMBRANE SCIENCE
Volume 638, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.memsci.2021.119674

Keywords

Polymer inclusion membranes (PIMs); Reactive ionic liquids (RILs) based on imidazolium derivatives; Membrane transport; Cd(II), Cu(II), Pb(II) and Zn(II) chlorides; Kinetic models

Funding

  1. Polish National Science Centre [2015/18/M/ST5/00635]
  2. Hubert Curien Partnership Program Polonium [35501/2016]

Ask authors/readers for more resources

Three new reactive ionic liquids were synthesized and used as carriers in polymer inclusion membranes, with one of them successfully applied for the selective transport of Cd(II) ions in the removal process from multicomponent aqueous chloride solution. The study demonstrated the effectiveness of the RILC8_Br ionic liquid in selectively transporting Cd(II) ions.
Three new reactive ionic liquids (RILs) based on the imidazole derivatives were synthesized and used as carriers in polymer inclusion membranes (PIMs) composed of cellulose triacetate (CTA) as a polymer matrix and o-nitrophenyl octyl ether (NPOE) as a plasticizer. The effect of alkyl chain length (Cl, C4, and C8) in the imidazolium cation of RILs on the transport and separation properties was evaluated. From among three synthesized RILs only the RIL with the longest alkyl chain (RILC8_Br) can be successfully applied as the carrier for Cd(II) removal from multicomponent aqueous chloride solution containing also Cu(II), Pb(II), and Zn(II) ions. The effects of the stripping phase composition, HC1 concentration in the feed solution, and the carrier content in the membrane on the separation performance and transport effectiveness were studied. The results indicate that the RILC8_Br ionic liquid enables selective transport of Cd(II) ions and their active concentration in the stripping solution with the fluxes reaching a value of 2.7 x 10(-10) 10 mol/cm(2)s. In the investigated feed solution concentration range, the selectivity order was found to be Cd(II) > Zn(II) > Pb(II) >> Cu(II) and it was independent of the experimental conditions. For a description of the transport kinetics a model similar to the first-order reversible reaction equations was applied and its applicability was proved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available