Selective transport of yttrium(III) in the presence of iron(III) through liquid-membrane impregnating acidic organophosphonate mobile carrier |
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| Affiliation: | 1. Inner Mongolia Business &Trade Vocational College, Hohhot,010070,China;2. Inner Mongolia People''s Hospital, Hohhot,010010,China;3. Electrical Engineering Department, University of Technology & Applied Science Oman;4. Electrical section/ department of engineering, University of technology and applied science -ibra . Al sharqiya north region / sultanate of Oman;1. School of Industrial Engineering, Purdue University, West Lafayette, IN 47906, USA;2. School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN 47906, USA;3. School of Mechanical Engineering, Purdue University, West Lafayette, IN 47906, USA;4. School of Materials Engineering, Purdue University, West Lafayette, IN 47906, USA |
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| Abstract: | The extraction and stripping behavior of yttrium(III) and iron(III) with 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPA) was investigated and applied to liquid-membrane transport for their mutual separation. The extractability of yttrium(III) with EHPA was less than that of iron(III) at equilibrium, but the rates of extraction and stripping of iron(III) were slow. The carrier-mediated transport of yttrium(III) in the presence of iron(III) was investigated through a supported liquid membrane (SLM), impregnated with EHPA as a mobile carrier. Yttrium(III) with fast kinetics was selectively transported across an SLM from a dilute-acid solution into a sulfuric-acid stripping solution, while iron(III) with slow kinetics was hardly transported and was retained in the feed solution. Yttrium(III) was separated from iron(III) through the SLM and quantitative recovery was realized. |
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