| abstract |
The invention relates to a method for recovering plutonium from an organic phase containing plutonium, the method comprising: S1, contacting an organic phase containing tetravalent plutonium with a reducing agent or an organic phase containing a reducing agent, and performing a reduction reaction to reduce the tetravalent plutonium into Trivalent plutonium, obtains the second organic phase mixture, wherein, the acidity value of the organic phase containing tetravalent plutonium is 0-0.3mol/L, and the reducing agent is diethylhydroxylamine; S2, the second organic phase mixture and back extraction The water phases are mixed for back extraction, and the trivalent plutonium in the second organic phase mixture is back extracted into the back extraction water phase, and the back extraction water phase contains nitric acid. The method of the invention has fast reduction and stripping speed of plutonium and high stripping rate. |