Two new insoluble polymer composites for the treatment of LLW: 1. polypyrrole doped by UO[sub 2][sup 2+] complexing polyanions 2. UO[sub 2][sup 2+] complexing sol-gel based composites. Stability constants. Leaching tests, alpha and gamma irradiation

Leroy, D.; Martinot, L.; Mignonsin, P.; Caprasse, F.; Je´ro⁁me, C.; Je´ro⁁me, R.
July 2000
AIP Conference Proceedings;2000, Vol. 532 Issue 1, p84
Academic Journal
In a previous work, we have demonstrated that polyanions like polyacrylamidoglycolic acid (PAAG) and polyacrylamidomethylpropanesulfonic acid (PAMPS) are capable to complex UO[sub 2][sup 2+] ions. Unless they are crosslinked, these polyanions/UO[sub 2][sup 2+] complexes are soluble when submitted to dynamic leaching tests in a Soxhlet extractor. Considering the feasibility of a new process for the storage or for the concentration of low level activity liquid wastes (LLW), we had to strongly enhance the insolubility of these complexes. We have developed two original insolubilization ways, as compared to the crosslinking of the polymer. © 2000 American Institute of Physics.


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