Preparation and Application of Layered Na0.7MnO2.05 Ionic Adsorbent
The threat of radioactive toxic waste storage is becoming more and more serious.Among them,137Cs and 90Sr are thermal fission products with long half-life in radioactive waste liquid,which have strong biological toxicity,especially the treatment of radioactive nuclear waste water is the most difficult.Therefore,the development of new materials that can effectively remove ions such as Cs+and Sr2+is of great significance for the treatment of nuclear waste liquid.Using Na2CO3 and MnCO3 as raw materials,the manganate ion sieves of Na4Mn9O18 and Na0.7MnO2.05 were prepared by solid-state sintering.The crystal structure and pore size of the manganate ion sieves were adjusted by adjusting the preparation conditions.At the same time,the ability of the prepared materials to adsorb strontium ions in simulated seawater environment was verified.The results showed that the layered strontium ion adsorbent,namely Na-Mn-O manganate adsorbent,had good selective adsorption and excellent adsorption performance.
Strontium ionsManganate ion sieveLayered structureAdsorbent
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