G - Physics – 21 – F
Patent
G - Physics
21
F
362/1
G21F 9/18 (2006.01) B01J 20/22 (2006.01) C02F 1/28 (2006.01) G21F 9/12 (2006.01)
Patent
CA 1036719
ABSTRACT OF THE DISCLOSURE: The separation of fission and corrosion products as well as corresponding isotopes from liquid waste by means of biosorbents having chelate-forming and active exchange groups, is effected by contacting the liquid waste with the biosorbent to form a precipitate inside the pores and on the surface of the biosorbent. The biosorbent is then activated by an at least two-stage regeneration; in the first stage, the biosorbent is regenerated by being eluted with solutions of compounds selected from the group consisting of ferric chloride, aluminum nitrate, copper sulphate, calcium chloride and manganese sulphate having a concentration of from 0.1 M to saturation so that the cationic component thereof is recaptured onto the biosorbent. In the second stage, the bio- sorbent is regenerated by eluting with a solution of compounds selected from the group consisting of sodium hydroxide, potassium gerrocyanide, sodium carbonate and potassium permanganate having a concentration of from 0.1 M to saturation, the anionic component of which is capable of reacting with the recaptured cation thereby giving rise to a precipitate inside the pores and on the surface of the biosorbent.
170884
Hulak Pavel
Jilek Rudolf
Katzer Josef
Prochazka Hubert
Stamberg Karel
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