Separation of 152+154Eu,90Sr from radioactive waste effluent using liquid-liquid extraction by polyglycerol phthalate

摘要

A new polyglycerol phthalate extractant was prepared and characterized using Fourier transform infra-red spectroscopy, proton nuclear magnetic resonance (1H NMR) spectroscopy, and thermogravimetric analysis. A preliminary study of the extraction of long-lived(90Sr and 152+154Eu) and short-lived (90Y) radionuclides by polyg-lycerol phthalate was performed.The influence of different diluents,concentration of the acid, type of acid,and vari-ous interfering ions was explored. The stripping of 152+154Eu radionuclide was studied by using different acid solutions,and it was found that sulfuric acid was the ideal acid for this purpose.Furthermore, 152+154Eu was extracted from the fission products(90Sr)and the extraction% of 90Sr was found to improve in the presence of interfering ions.