Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Reexamination Certificate
2011-04-19
2011-04-19
Lorengo, Jerry (Department: 1731)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
C423S006000, C423S008000, C423S155000, C423S157000, C423S179000, C423S181000, C210S682000, C588S020000
Reexamination Certificate
active
07927566
ABSTRACT:
The present invention relates to a treatment of high-level waste of radiochemical production containing radionuclides and macro-admixtures including sodium. The method of extraction of radionuclides by processing acidic aqueous waste solutions by extractants containing macrocyclic compounds selected from the group of crown ethers having aromatic fragments containing alkyl and/or hydroxyalkyl substituents of a linear and/or branched structure, and/or cyclohexane fragments containing alkyl and/or hydroxyalkyl substituents of a linear and/or branched structure, and/or fragments of —O—CHR—CH2O—, where R is the normal or branched alkyl or hydroxyalkyl in organic solvents containing polyfluorinated telomeric alcohol 1,1,7-trihydrododecafluoroheptanol-1 having the formula H(CF2CF2)nCH2OH, where n=3, and a mixture of polyoxyethylene glycol ethers of synthetic primary higher aliphatic alcohols of a fraction C12-C14of a general formula CnH2n+1O(C2H4O)mH, where n=12-14, m=2 is proposed. A possibility of selection of quantitative and qualitative composition of the extractant depending on the waste composition and the object to be achieved of joint or individual extraction of radionuclides results in universal technology. A method of regeneration of extractants containing crown ethers allowing one to carry out the operation of extraction of radionuclides in a commercial scale under countercurrent dynamic conditions, with regeneration of the extractant for reuse is also proposed.
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Glagolenko Jury Vasilievich
Logunov Mikhail Vasilievich
Mamakin Igor Vitalievich
Polosin Vladimir Mikhailovich
Rovny Sergey Ivanovich
Darji Pritesh
Designing-Contructing and Industrial-Inculcating Enterprise 
Federal State Institute “Federal Agency for Legal Protect
Locke Lord Bissell & Liddell LLP
Lorengo Jerry
LandOfFree
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