Method of recovering valuable resource
AssigneesKabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
InventorsShohei KANAMURA, Motoshige YAGYU, Takashi OOMORI
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Abstract
A method of recovering a valuable resource from an electrochemical device including a catalyst of an oxide of a noble metal, includes: reducing the oxide while heating an object that has the catalyst; and applying a voltage to the object that is in contact with a solution containing at least one selected from the group consisting of ion species and chemical species which can form a complex with the noble metal, continuously increasing an absolute value of the voltage and then holding the value while periodically reversing a polarity of the voltage to perform an electrolytic reaction and dissolve the reduced noble metal in the solution as ions.
Claims7
A method of recovering a valuable resource from an electrochemical device,
- the electrochemical device comprising a catalyst of an oxide of a noble metal,
- the method comprising:
- reducing the oxide while heating an object that has the catalyst;
- and
- applying a voltage to the object that is in contact with a solution containing at least one selected from the group consisting of ion species and chemical species which can form a complex with the noble metal, continuously increasing an absolute value of the voltage and then holding the value while periodically reversing a polarity of the voltage to perform an electrolytic reaction and dissolve the reduced noble metal in the solution as ions.
Dependencies are inferred from the claim text.