SEPARATION OF ACTINIDES AND LANTHANIDES FROM ACIDIC NUCLEAR WASTES BY SUPPORTED LIQUID MEMBRANES
作者： P. R. Danesi , R. Chiarizia , P. Rickert , E. P. Horwitz
DOI: 10.1080/07366298508918505
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摘要: ABSTRACT Supported liquid membranes, SLM, consisting of a solution 0.25 M octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) and 0.75 μ tributylphosphate (TBP) in decalin absorbed on thin micropocous polypropylene supports, have been studied for their ability to perform selective separations concentrations actinide lanthanide ions from synthetic acidic nuclear wastes. The permeability coefficients selected actinides (Am, Pu, U, Np) some the other major components wastes measured using SLMs flat-sheet hollow- fiber configurations. results shown that with (25 μm) SLMs, Celgard® 2500 as support, membrane permeation process is mainly controlled by rate diffusion through aqueous boundary layers. With thicker (430 μmpar; hollow-fiber Accurel® hollow-fibers Is both SLM boundar...
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