Process for the separation of radioactive iodine compounds by pr

Details Process for the separation of radioactive iodine compounds by pr Process for the separation of radioactive iodine compounds by pr

1992-11-03

1994-10-04

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210911, 423249, C02F 170, C02F 158

Patent

active

053523679

ABSTRACT:
A process for the separation of radioactive iodine compounds by precipitation is provided. This process comprises adding 0.1 to 3 parts by weight of a reducing agent and an effective amount of silver nitrate to 100 parts by weight of a liquid waste containing radioactive iodine compounds while keeping the liquid waste at a temperature ranging from 20.degree. to 80.degree.C., and stirring the obtained mixture for 0.5 to 72 hours to precipitate the radioactive iodine compounds. Silver nitrate is preferably used in a molar concentration which is 1 to 4 times that of radioactive iodine molecules contained in the liquid waste. By this process, iodates which could not be precipitated by conventional methods can be effectively precipitated and separated to thereby reduce the amount of radioactive iodine discharged to the environment.

REFERENCES:
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patent: 4275045 (1981-06-01), Anav et al.
patent: 4362660 (1982-12-01), Partridge et al.
patent: 4461711 (1984-07-01), Behrens
United States Statutory Invention Registration, Reg. No. H800, Beahm et al., Jul. 3, 1990.

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