Removal of dissolved actinides from alkaline solutions by the method of appearing reagents

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:871008

Krot, Nikolai N ^[1]; Charushnikova, Iraida A ^[2]

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1. Chelomiya St., 2, Apartment 15, Moscow, RU
2. Svoboda St., Bldg. 7A, Apartment 15, Moscow, RU

A method of reducing the concentration of neptunium and plutonium from alkaline radwastes containing plutonium and neptunium values along with other transuranic values produced during the course of plutonium production. The OH.sup.- concentration of the alkaline radwaste is adjusted to between about 0.1M and about 4M. [UO.sub.2 (O.sub.2).sub.3 ].sup.4- ion is added to the radwastes in the presence of catalytic amounts of Cu.sup.+2, Co.sup.+2 or Fe.sup.+2 with heating to a temperature in excess of about 60.degree. C. or 85.degree. C., depending on the catalyst, to coprecipitate plutonium and neptunium from the radwaste. Thereafter, the coprecipitate is separated from the alkaline radwaste.

• Research Organization: Russian Federation of Atomic Energy
• Assignee: Krot, Nikolai N. (Chelomiya St., 2, Apartment 15, Moscow, RU);Charushnikova, Iraida A. (Svoboda St., Bldg. 7A, Apartment 15, Moscow, RU)
• Patent Number(s): US 5640668
• OSTI ID: 871008
• Country of Publication: United States
• Language: English

Related Subjects

removal
dissolved
actinides
alkaline
solutions
method
appearing
reagents
reducing
concentration
neptunium
plutonium
radwastes
containing
values
transuranic
produced
course
production
oh
radwaste
adjusted
1m
4m
uo
4-
added
presence
catalytic
amounts
cu
heating
temperature
excess
60
degree
85
depending
catalyst
coprecipitate
thereafter
separated
wastes containing
alkaline solutions
alkaline solution
catalytic amount
containing plutonium
transuranic values
/423/588/