The effect of desferrioxamine B on the desorption of U(VI) from Georgia kaolinite KGa-1b and its ligand-promoted dissolution at pH 6 and 25 °C

The results show that DFO-B is a very efficient U-desorbent and affects uranium mobility in clay containing soils. Moreover, the ligand-promoted desorption results principally in a stable neutral aqueous species (UO2DFOBH) not likely to re-adsorb on soil particles to a great extent. Hence, the siderophore effect on the bioavailability of U(VI) is not exclusively determined by its desorptive strength but also encompasses the aqueous speciation that follows desorption.