Document Type and Number:
Japanese Patent JPS5633680
Kind Code:
B2
Abstract:
1353121 Processing radioactive waste COMMISSARIAT A L'ENERGIE ATOMIQUE 15 March 1972 [16 March 1971] 11985/72 Heading G6R Radioactive waste in the form of a dry powder is mixed with a polymerizable material and a monomer and the mixture polymerized at room temperature to form a solid resin block. A suitable resin is obtained by condensation of maleic anhydride and phthalic anhydride with propylene glycol and copolymerization of the product with styrene in the presence of methyl ethyl ketone peroxide catalyst and cobalt naphthenate accelerator. The powdered radioactive waste may be prepared by drying liquid radioactive effluent under vacuum in a thin film evaporator. The amount of radioactive'material which can be leached from the resin blocks is reduced by prior treatment of the concentrated effluent with cobalt or nickel potassium ferrocyanide.
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Application Number:
JP2693372A
Publication Date:
August 05, 1981
Filing Date:
March 16, 1972
Export Citation:
International Classes:
C02F11/00; G21F9/00; G21F9/16; G21F9/30; C02F1/00; (IPC1-7): G21F9/16; C02F1/00; C02F11/00; G21F9/30