Removal of aerosols and iodine from the head-end off-gas of a fuel reprocessing plant

Within the framework of the reprocessing and waste treatment project (PWA) of the GfK, work on the separation of suspended matter and fission iodine from the resolver waste gas of reprocessing plants was carried out. In the first part of the report, the authors present a method concept to separate aerosols and they report on running studies. The decontamination factor for radionuclides occuring in aerosol form is estimated. In the second part, a report is given on required degrees of separation of iodine 129/131, on the desorption method of fission iodine for separation from the fuel solution, the separation of iodine by means of wet washing methods and on solid sorption materials, on materials harmful to iodine filters and on the design of the iodine filter for a reprocessing plant. (HR)