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Method for separating at least one actinide element from a lanthanide element in an aqueous solution by sequestering and membrane filtration
Method for separating at least one actinide element from a lanthanide element in an aqueous solution by sequestering and membrane filtration
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机译:通过螯合和膜过滤从水溶液中的镧系元素中分离至少一种act系元素的方法
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摘要
The invention relates to a process for separating, in an aqueous medium, at least one actinide element from one or more lanthanide elements by using at least one molecule which sequesters the said actinide element to be separated and membrane filtration, the said process successively comprising: a) a step of bringing at least one molecule which sequesters the said actinide element in contact with the aqueous medium, the said molecule not being retained in the non-complexed state by the said membrane and being capable of forming a complex with the actinide element to be separated, comprising the said element and at least two of the said sequestering molecules, which complex is capable of being retained by the membrane; b) a step of passing the aqueous medium over the membrane in order to form a permeate on one side, comprising an aqueous effluent depleted of the said actinide element, and a retentate comprising the said complex.
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