METHOD FOR PURIFICATION OF LIQUID RADIOACTIVE WASTES WITH REMOVAL OF TRANSURANIUM ELEMENT AND URANIUM

摘要

Method is proposed for purification of water and liquid radioactive wastes (LRW) with removal of transuranium elements and uranium through treatment of water or LRW with high-molecular complex former phosphor-including adduct (FA) with following structural formula:,where R is radical of aliphatic ester with linear structure -- -- - - (II) and FA of developed structure aliphatic aster of developed structure (III) with following structural formula:,X+Y+Z=10,With deposition of complex obtained with following ultra-filtration on solid polymer or inorganic membranes with average diameter of pores from 0,01 to 0,10 mkm. Phosphor-including adducts form stable complexes with uranium and transuranium elements in water medium and in LRW at uranium concentration up to 40 mg/dmand mass ratio of FA and uranium (1-6):1 and pH of solution 5,5-6. Coefficient of keeping R depends on mass ratio of FA and uranium (). Coefficient of keeping uranium at 4:1 is 98,7-99,7%. At that active purification of LRW with removal of transuranium elements takes place: keeping coefficient comes forPu to 98,2-99,2 %, forAm - 98,8-99,8 %, forCm - 99,1-99,7 %.