Extraction of zinc by alkyl thiophosphoric acids with emulsion liquid membranes
1993; Wiley; Volume: 16; Issue: 3 Linguagem: Inglês
10.1002/ceat.270160311
ISSN1521-4125
AutoresJorge Vasconcelos, Jorge M.R. Carvalho,
Tópico(s)Radioactive element chemistry and processing
ResumoAbstract Treatment of a given multicomponent cationic mixture was studied applying the emulsion liquid membrane (ELM) separation technique for Zn recovery. Experimental apparatus and conditions are described. Comparative studies using two zinc‐selective ion exchangers (thio‐DEHPA and dithio‐DEHPA) were carried out whereby the composition of the liquid membrane and the operating conditions were investigated for both extractants. A useful method of representing the concentrations of the feed and the receiving aqueous phase is proposed, which allows the occurrence of break‐up and/or osmosis to be easily detected.
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