Process for the continuous or quasi-continuous separation of cesium-ions from aqueous solutions by means of ion-exchange on ammonium phosphomolybdate

摘要

the invention concerns a method for continuous or quasi continuous separation of cesium ions from aqueous, high sodium and / or potassium ion concentrations by ion exchange with ammonium broken solutions molybdatophosphat (amp).;this is achieved by(a) the csu207a - ions and at least nau207a and / or ku207a salts entu00adhaltende ausgangslu00f6sung at ph 9.5 with a u2266 on a porous surface within a behu00e4ltu00adnisses loose floor or on the surface schwebenu00adden layer produced by precipitation, mikrokriu00adsta llinem amp is fed into the container.wu00e4hrendu00addessen the nhu2084u207a ions against the csu207a ions are exchanged and the less soluble cesium molybdatophosphat is formed, (b) a steady flow of ausgangslu00f6sung with the conditions laid down in the lmp mikrokristalle with dekontamiu00adnierten solution from the behu00e4ltni it will be held will be recruited(c) the selective of the cesium ions liberated solution above the microcrystalline layer or above the upper limit of the schwebevolumens of lmp mikrokristalle continuously is deducted (d) after the exhaustion of the supply of austauschers ausu00adgangslu00f6sung cut off,the exchanger washed with water and the water is deducted, and then the exchanger from the container or flushed with a strongly alkaline, aqueous solution and dissolved from the beu00adhu00e4ltnis is removed and a fresh lmp layer in the container is raised and the sch rides (a) to (d) as often as required with csu207a - u00adhaltigen initial solutions are repeated.