Process for bituminizing radioactive waste constituted by cation

Details Process for bituminizing radioactive waste constituted by cation Process for bituminizing radioactive waste constituted by cation

1985-03-06

1987-05-05

Lechert, Jr., Stephen J.

Compositions

Radioactive compositions

210660, 252626, 252631, 423 7, 521 28, G21F 916, B01D 1500

Patent

active

046630864

ABSTRACT:
The invention relates to a process for bituminizing radioactive waste constituted by cation and/or anion exchange resins.
This process comprises a resin pretreatment stage performed so as to replace the H.sup.+ ions of the cation exchange resins by ions chosen from the group including Ca.sup.++, Sr.sup.++ and Ba.sup.++ and/or for replacing the OH.sup.- and/or Cl.sup.- ions of the anion exchange resins by an anion chosen from the group including NO.sub.3.sup.-, HCO.sub.2.sup.- and CH.sub.3 CO.sub.2.sup.-.
This pretreatment makes it possible to increase the capacity of the coating installation and limit the swelling in water of the bituminized coatings obtained.

REFERENCES:
patent: 3716490 (1973-02-01), Van de Voorde
patent: 4122048 (1978-10-01), Buchwalder et al.
patent: 4204974 (1980-05-01), Puthawala et al.
patent: 4401591 (1983-08-01), Korostenski
patent: 4530723 (1985-07-01), Smeltzer et al.

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