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Design Requirements for Uranium Ion Exchange from Ammonium Bicarbonate Solutions in a Fluidized System.

Authors
Traut-DE; Nichols-IL; Seidel-DC
Source
NTIS: PB 279 696 :27 pages
Link
NIOSHTIC No.
10007836
Abstract
A fluidized countercurrent ion-exchange system was developed, operated, and evaluated by the U.S. Department of the Interior, Bureau of Mines. The system consisted of integrated multiple- compartment absorption and elution columns in which the solution flows were continuous except for short periods when resin increments were withdrawn. The exchange of uranyl carbonate between a simulated in situ uranium leach liquor and a strong-base ion- exchange resin together with the subsequent elution with an ammonium chloride solution was studied. The effects of the number of sections, section height, amount of resin withdrawal, solution flow rate, and column diameter were investigated. The kinetic and equilibrium relationships for the absorption and elution steps were also examined. The experimental data indicate a strong interdependence between variables. Solution retention time appears to be a major limiting variable in the absorption process, while resin residence time is the determining factor in the elution process. The column was efficient over a range of conditions, but close control was needed for optimum operation.
Publication Date
19780101
Document Type
IH; Report of Investigation;
Fiscal Year
1978
NTIS Accession No.
PB-279696
NTIS Price
A03
Identifying No.
RI 8280
NIOSH Division
SLRC;
Source Name
NTIS: PB 279 696
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