Recovery of 131I from fission 99Mo production process by distillation method
Carregando...
Data
Data de publicação:
2017
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
Exportar
Resumo
The results of one of the recovery stages of 131I as a byproduct of the 99Mo fission production process are
presented in this work. A modified wet-distillation apparatus was used for iodide purification and some work
parameters were tested. The assays included iodide anion eluent, concentration of H2SO4, H2O2, the catalyst
effect of MoO3, temperature and time process. The results of eluting anions demonstrated lower recovery of 131I
using nitrate salt. The sulfate solution and its respective acid (H2SO4) at concentration 1.6 M, presented better
results. Hydrogen peroxide was used as a main oxidant of the ions iodide, the experiments realized with 6 mL of
H2O2 3% showed higher recovery than assays prepared with H2O2 higher and lower amount. Molybdenum oxide
was evaluated as catalyst of iodine in solution; however, the results did not demonstrate an advantage in relation
to its absence. In addition, the recovery of iodide was delayed at initial periods of the process in presence of the
catalyst, leading to an increase on time process. Temperature decrease of distillation solution from 80 to 50 °C
showed advantageous since the recovery yields were similar beside a lower wet drag to trap solution. Time
distillation was carried out at least four hours with sampling each hour; the best times were between 1 and 2
hours. Shorter periods of distillation avoid dilution of the capture solution on the further recovery process.
Several parameters were studied and it was possible to set up system that provided 131I recovery around 50%
yield.
Como referenciar
DAMASCENO, MARCOS O.; BALOGH, TATIANA S.; FORBICINI, CHRISTINA A.L.G. de O. Recovery of 131I from fission 99Mo production process by distillation method. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017. Disponível em: http://repositorio.ipen.br/handle/123456789/28307. Acesso em: 20 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.