Method for removing nitrate ions from a solution
AssigneeSiemens Aktiengesellschaft
InventorsHorst-Otto Bertholdt, Rainer Gassen
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Abstract
Nitrate ions are removed from a solution. Such a solution is, in particular, a spent decontamination solution or another spent solution intended for reducing the radioactivity of a metal part. It is provided that the solution, if it comprises a short-chain organic compound, is irradiated with UV light. Otherwise, such a compound is introduced into the solution prior to irradiation. Using the method, the nitrate ions are chemically reduced, forming, for example, N2, N2O, CO2 and H2O.
Claims19
A method for removing nitrate ions from a spent decontamination solution to which nitric acid has been added, which comprises the steps of establishing whether the solution comprises a short-chain organic compound and, if such a compound is present, irradiating the solution with UV light;
- and if such a compound is not present, introducing a short-chain organic compound into the solution, and then irradiating the solution with UV light.
A method for removing nitrate ions from a spent decontamination solution comprising the steps of establishing in the solution an effective amount of a short-chain organic compound, and irradiating the solution with UV light.
Dependencies are inferred from the claim text.