Magnetic Separation Nanotechnology for Spent Nuclear Fuel Recycle

Abstract

The ability to reuse the dMNP-DPTA conjugates were investigated by performing up to 15 cycles of sorption/desorption tests. Three-step-washing stripping process using either 0.1 M HNO 3 or 1 M HCl as the stripping agent was developed. As shown in Figure 1, for both cases, over 98% of Cd was recovered by the first two acid stripping steps, and there was a negligible amount of Cd in the third time deionized water washing. No decrease in sorption efficiency was observed during 15 sorption/desorption cycles.