Method for disposing of a solution containing an organic acid

Details Method for disposing of a solution containing an organic acid Method for disposing of a solution containing an organic acid

1996-09-30

1999-09-28

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210669, 210682, 210688, C02F 900

Patent

active

059582472

ABSTRACT:
A method and a device are provided for disposing of an aqueous solution that contains an organic acid and an iron complex and occurs particularly in the decontamination of radioactively contaminated surfaces of components. It is contemplated that the iron complex in the solution is reduced by irradiation with UV light. A dissolved iron salt and carbon dioxide, which is given off, are formed in the process. An oxidant is then added to the solution that contains the dissolved iron salt and the organic acid. This produces water, and the iron complex forms once again. Some of the dissolved iron salt is removed from the solution by means of a cation exchanger. The solution containing the iron complex is irradiated again with UV light. A cycle process ensues, which continues until all the organic acid is consumed.

REFERENCES:
patent: 3276458 (1966-10-01), Iverson et al.
patent: 3664870 (1972-05-01), Oberhofer et al.
patent: 3870033 (1975-03-01), Faylor et al.
patent: 4548716 (1985-10-01), Boeve
patent: 5073268 (1991-12-01), Saito et al.
patent: 5126111 (1992-06-01), Al-Ekabi et al.
patent: 5205999 (1993-04-01), Willis et al.
Japanese Patent Abstract No. 050 9997 A, Jan. 31, 1992.

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