从高放废液中系统分离79Se、93Zr、107Pd的方法

从高放废液中系统分离⁷⁹Se、⁹³Zr、¹⁰⁷Pd的方法

摘要: 本工作以⁷⁵Se、⁹⁵Zr、¹⁰⁹Pd为指示剂，试验并建立了以1mol/L HNO₃为上柱液介质和洗涤液，在DMG色层柱、硅胶柱、Bis-Ⅱ色层柱上分别选择性吸附Pd、Zr、Se，然后分别解吸的系统分离流程。该流程对Se的回收率接近90%，对Zr、Pd的回收率均大于90%，对⁹⁰Sr、¹³⁷Cs、¹⁵²Eu等核素的去污因子均高于10³。

Abstract: A procedure including DMG resin column, silica gel column and Bis-Ⅱresin column was established to sequentially separate ⁷⁹Se, ⁹³Zr and ¹⁰⁷Pd from high level liquid waste(HLLW). A simulated solution was prepared to test the procedure and ⁷⁵Se, ⁹⁵Zr and ¹⁰⁹Pd were used as tracers. The recovery of Se is near to 90%, and that of Pd and Zr are more than 90%, and the decontamination factors of ⁹⁰Sr, ¹³⁷Cs and ¹⁵²Eu are better than 10³.