Transformation of radionuclide occurrence state in uranium and strontium recycling by Saccharomyces cerevisiae

Radionuclide recycling by biosorption combined with the ashing process is a promising nuclide recovery method. To investigate the transformation process of radionuclide occurrence state in bio-recycling, uranium and strontium recycling by S.cerevisiae were studied. S. cerevisiae exhibits good performance in the enrichment of uranium and strontium with as high as almost 90% biosorption efficiency. The results demonstrate that adsorbed uranium and strontium precipitates can be transformed into authenite and strontium sulfate on cell surface. The final state of uranium is mainly in form of UP 2 O 7 , while the final state of Sr(II) is mainly in form of SrSO 4 after ashing. Graphic abstract