Tritium adsorbent, method for separating tritium in water, and method for regenerating tritium adsorbent
A method of using hydrogen- or lithium-containing manganese oxide having a spinel crystal structure as a tritium adsorbent to trap tritium from tritium-containing water makes it possible to inexpensively separate tritium from water.
1. A method for separating tritium in water, the method comprising bringing tritium-containing water into contact with a tritium adsorbent to trap tritium from tritium-containing water, the tritium adsorbent comprising hydrogen- or lithium-containing manganese oxide having a spinel crystal structure.
2. The method for separating tritium in water according to claim 1 , wherein the tritium adsorbent having tritium trapped is treated with an acid to elute tritium.
3. A method for regenerating a tritium adsorbent, the method comprising supplementing the tritium adsorbent which has been used for separating tritium by the method according to claim 1 , with a hydrogen ion or a lithium ion to restore the adsorptivity to a tritium ion.
4. The method for regenerating a tritium adsorbent according to claim 3 , wherein a hydrogen ion is supplemented through an acid treatment.
5. A method for separating tritium in water, the method comprising bringing tritium-containing water into contact with a tritium adsorbent to trap tritium from tritium-containing water, the tritium adsorbent comprising hydrogen- or lithium-containing manganese oxide having a spinal crystal structure which is a powder, a membrane construct, or an electrode to trap and separate tritium in the tritium-containing water.
6. A method for regenerating a tritium adsorbent, the method comprising supplementing the tritium adsorbent which has been used for separating tritium by the method according to claim 5 , with a hydrogen ion or a lithium ion to restore the adsorptivity to a tritium ion.