Abatement of radioiodine in aqueous reprocessing off-gas.

The reprocessing used nuclear fuel (UNF) releases volatile fission and activation products, including I, into the off-gas of a processing plant. Mitigation of the release of vapor phase radionuclides is necessary for meeting regulatory requirements in the United States and other countries. In an aqueous reprocessing plant, volatile radioiodine could be present in several forms, depending on the chemistry of the process used.