Abstract:
THEEXTRACTIONMECHANISMOFTRITIUMIN30%TBP┐KEROSENE┐HNO3SYSTEMLiuJiang(ResearchCenterforEco-EnvironmentalSciences,theChineseAcademyofSciences,Beijing100085)HuHuaizhong(ChianInstituteofAtomicEnergy,P.O.Box275(26),Beijing102413)ABSTRACTTheextractionmechanismoftritiumhasbeenstudiedbydeterminingthedistributioncoeficientoftritiumin30%TBP-kerosene-HNO3-H2Osystem.Ithasbeenfoundthattritiuminunirradiatedsolventiseasytobewashedoutwithwater.Themechanismoftritiumextrac-tionisbasedonthewel-distributeddilutionoftritiumbetweentwophases.Thereisanobvi-ousretentionoftritiuminthesolventafterwashingofirradiatedsolventbywater.Someoftritiumenterthestructureofsolventsduringtheiradiationperiodbyfreeradicalpolymer-izationreaction.Soweproposetousethehighlyeficientequipmentswhichcanisolatetheorganicphaseandaqueousphaserapidlyandcompletelyinordertocontrolthetrendoftri-tiuminreprocessingprocessofspentfuelfrompowerreactous.KeywordsTritiumExtractionDistributioncoeficientTBP