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Extraction of zinc by alkyl thiophosphoric acids with emulsion liquid membranes
Author(s) -
Vasconcelos Jorge M. T.,
Carvalho Jorge M. R.
Publication year - 1993
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270160311
Subject(s) - emulsion , chemistry , zinc , membrane , chromatography , extraction (chemistry) , cationic polymerization , aqueous solution , alkyl , organic chemistry , biochemistry
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.