Solid adsorbents for collection and storage of iodine-129 from reprocessing plants

Because of the long half-life and relatively large quantities produced during fission of nuclear fuels, 129I will have to be recovered and stored indefinitely to prevent undue radiation exposure to the local population around nuclear fuel reprocessing facilities. Although release limits have not been specified for reprocessing plants, an interim design objective of at least a 106 reduction is suggested. Methods proposed for collection of 129I from reprocessing plant effluents include wet scrubbing and the use of solid adsorbents. The relative merits for the use of solid adsorbents for collection and long-term storage of iodine are discussed. (U.S.)