Agent for adsorption of ruthenium from aqueous solution and method for adsorption of ruthenium from aqueous solution
First Claim
1. A ruthenium adsorbent comprising manganese oxides as the primary component of the adsorbent, provided that manganese oxides consisting of ε
- -MnO2 and/or γ
-MnO2 are excluded from the manganese oxides,wherein the manganese oxides have an amorphous structure or a layered structure or a tunnel structure, andwherein, in the case that the manganese oxides have a tunnel structure, the adsorbent comprises an oxide of manganese having at least two linked MnO6 octahedrons forming each horizontal and vertical side of the tunnel structure.
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Abstract
An adsorbent is provided to adsorb ruthenium from aqueous solution for recovery and/or reuse or removal of said ruthenium, and a method for purifying, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions, polluted with a radioactive element, using said adsorbent.
The ruthenium adsorbent includes manganese in the form of oxides thereof. The adsorbent can further include at least one additional transition metal element other than manganese, such as copper. The adsorbent soaked in water removes radioactive ruthenium or the like through adsorption, and thereby can purify, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions.
4 Citations
21 Claims
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1. A ruthenium adsorbent comprising manganese oxides as the primary component of the adsorbent, provided that manganese oxides consisting of ε
- -MnO2 and/or γ
-MnO2 are excluded from the manganese oxides,wherein the manganese oxides have an amorphous structure or a layered structure or a tunnel structure, and wherein, in the case that the manganese oxides have a tunnel structure, the adsorbent comprises an oxide of manganese having at least two linked MnO6 octahedrons forming each horizontal and vertical side of the tunnel structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- -MnO2 and/or γ
Specification