Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1988-04-25
1989-02-28
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210751, 252628, 252631, G21F 912, G21F 916
Patent
active
048083186
ABSTRACT:
Cesium can be selectively recovered from a nuclear waste solution containing cesium together with other metal ions by contact with a modified phlogopite which is a hydrated, sodium phlogopite mica. Once the cesium has entered the modified phlogopite it is fixed and can be safely stored for long periods of time.
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patent: 4537710 (1985-08-01), Komarneni et al.
patent: 4737316 (1988-04-01), Macedo et al.
Scott et al., "Susceptibility of Interlayer Potassium in Micas to Exchange with Sodium", Clays Clay Miner, 14, 69 (1966).
Komarneni et al., "Low Temperature Materials for Waste Disposal" abstract of paper presented at Amer. Ceramic Soc. Meeting, Apr. 26, 1987.
Komarneni et al., "A Cesium-Selective Ion Sieve made by Topotactic Leaching of Phlogopite Mica" Science, 239, pp. 1286-1288, (1988).
Mercer et al., "Zeolite Ion Exchange in Radioactive and Municipal Wastewater Treatment" Natural Zeolite Occurances, Properties, Use, pp. 451-462, Pergamon Press (1978).
Temura, "Sorption Phenomena Significant in Radioactive-Waste Disposal", Am. Assoc. Pet. Geol. Mcm., 18, pp. 318-330 (1972).
Thompson et al., "Hydration States of an Expanded Phlogopite in Relation to Interlayer Cations", Clay minerals, pp. 43-49 (1967).
Wilson, "A Visit to Chernobyl" Science, 236, pp. 1636-1640, (1987).
Wallace et al., "Development of an Improved Ion-Exchange Process for Removing Cesium and Strontium from High-Level Radioactive Liquid Wastes" Scientific Basis for Nuclear Waste Management, vol. 3, pp. 75-77.
Komarneni Sridhar
Roy Rustum
Anderson Thomas G.
Cintins Ivars
Hightower Judson R.
The United States of America as represented by the United States
Weinberger James W.
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