The mannered null neutral bidentate coordination activity which choice separates only trivalent actinoid making use of 1,10 phenanthroline or that alkyl derivative from trivalent actinoid and

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently recovering trivalent actinoids such as small amounts of americium and curium from a large quantity of lanthanoid contained in high-level liquid waste.;SOLUTION: The method for extracting and separating only trivalent actinoids selectively from a liquid solution containing trivalent actinoids and trivalent lanthanoid under liquid properties in a range of pH 3 to 5 is constituted by using the 1,10-phenanthroline or alkyl derivatives of it in Formula 1 which have a neutral bidentate coordination active functional group (a nitrogen atom: N) are used as an extractant.;COPYRIGHT: (C)2008,JPO&INPIT