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2 168 779

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IPC

(21) (22)

Application

99119830/06, 1999-09-14

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Start date

1999-09-14

(22)

Actual filing date

1999-09-14

(45)

Published

2001-06-10

(72)

Inventor

Babain V.A.Kiseleva R.N.Murzin A.A.Romanovskij V.N.Starchenko V.A.Smirnov I.V.Shadrin A.Ju.

(73)

Holder

Gosudarstvennoe Unitarnoe Predprijatie Nauchno-Proizvodstvennoe Ob"Edinenie Institut Im. V.G. Khlopina"

METHOD FOR SUPERCRITICAL FLUIDIC EXTRACTION OF METALS Russian patent published in 2001 - IPC

Abstract RU 2168779 C2

FIELD: decontamination of radioactive wastes. SUBSTANCE: matrix contaminated with radionuclides is held in supercritical solvent of high-pressure chamber in the environment of water, organic acid, and chelator. After that chamber is pumped through with supercritical carbon dioxide to ensure complete extraction, and metal extracted is accumulated in solution. Polyethylene glycols or substituted polyethylene glycols with metal-to-chelator molar proportion of 1:3-500 may be used as chelator. EFFECT: improved extraction of cesium and transuranium elements using low-cost and nontoxic chemical agents. 5 cl, 1 tbl

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RU 2 168 779 C2

Authors

Babain V.A.

Kiseleva R.N.

Murzin A.A.

Romanovskij V.N.

Starchenko V.A.

Smirnov I.V.

Shadrin A.Ju.

Dates

2001-06-10—Published

1999-09-14—Filed