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Highly efficient facilitated membrane transport of palladium(ii) ions from hydrochloric acid solutions through plasticizer membranes with cyanex 471X

Pospiech B.

Physicochemical Problems of Mineral Processing

2015

Vol. 51, iss. 1

281--291

In this work the efficient recovery of palladium(II) ions from hydrochloric acid solutions by transport through polymer inclusion membranes (PIMs) was studied. The membrane consisted of cellulose triacetate (CTA) as the polymeric support, o-nitrophenyl octyl ether (ONPOE) as the plasticizer and Cyanex 471X (triisobutylphosphine sulphide) as the ion carrier. The effect of various parameters on the transport kinetics and the recovery factor of palladium(II) was studied, including concentration of Cyanex 471X in the membrane, hydrochloric acid concentration in the source phase and potassium thiocyanate (KSCN) concentration in the receiving phase.

Selective against zinc(II) extraction of cadmium(II) with binary extractants

Gotfryd L., Szymanowski J.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 2

19-23

A series of investigations was performed to recognise the possibilities to develop technology, based on solvent extraction, for cadmium(II)/zinc(II) separation, purification and enrichment from industrial solutions. To solve the problem a classical sequence of the research work was performed: i) independent measurements of Cd(II) and Zn(II) extraction versus pH with use of all available extractants, ii) determination of cadmium(II) extraction and stripping isotherms for chosen extractants preparations. The extractive system for the chosen extractant - DIPSA/Cyanex 471X - was designed and tested on technological solution.