EXTRACTION AND SEPARATION OF THORIUM AND YTTERBIUM WITH BIS (2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID USING A HOLLOW FIBER MEMBRANE EXTRACTOR

EXTRACTION AND SEPARATION OF THORIUM AND YTTERBIUM WITH BIS (2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID USING A HOLLOW FIBER MEMBRANE EXTRACTOR

Zhang F.J.; Luo F.; Li D.Q.; Wu Y.L.
xmlui.dri2xhtml.METS-1.0.item-citation: Journal of Rare Earths, 2000, 18, 4, 263-264
Date: 2000

Abstract:

The based membrane extraction of Th4+ and Yb3+ was studied in HBTMPP-heptane using a hollow fibber membrane. The separation method of Th4+ and Yb3+ was proposed by kinetics competition. The separation operation of Th4+ and Yb3+ mixture was carried out by two successive extraction and stripping simultaneously. The concentration ratio of Th4+ to Yb3+ is 16.74 in the stripping solution. The recovery and purity of Th4+ are 71.6% and 95.74% respectively.

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