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Advanced liquid–liquid extraction combined with the conversion of the metal species with chemical reactions has been investigated. The complex formation reaction with water-soluble complexing reagent and the photochemical redox reaction for metal ions are focused. In the case of complex formation reaction, ethylenediaminetetraacetic acid (EDTA) was added to the aqueous phase of the extraction system...
The separation of rare earth metals using microcapsules (MC) consisting styrene (St)-divinylbenzene (DVB) copolymer and containing bis(2-ethylhexyl)phosphinic acid (PIA-226) has been investigated. Microcapsules containing PIA-226 can be prepared by adding PIA-226 to the dispersed phase during the preparation process. The extraction of rare earth metals with the microcapsules progresses via the same...
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