Japan Atomic Energy Agency has been conducting research and development on a thermochemical water-splitting cycle featuring iodine- and sulfur-compounds (called an IS process) as one of promising heat utilization systems of High Temperature Gas-Cooled Reactors. We have prepared polymer electrolyte membranes by the radiation-induced graft polymerization and cross-linking methods and then have investigated their applicability to electro-electrodialysis (EED) for concentrating HI in an HI-I2-H2O mixture. For practical applications, EED membranes are required to be stable in the severe environment of high-temperature strongly acidic solutions. We thus examined thermal, chemical and electrochemical stabilities of the radiation-grafted membranes under the conditions of the actual EED operation over 100 hours, while measuring the time evolution of a cell voltage and a change in the ion exchange capacity between the EED experiment. The results showed that chemical cross-linking in the graft chains could largely improve the membrane stability.
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18th International Conference on Nuclear Engineering
May 17–21, 2010
Xi’an, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4931-6
PROCEEDINGS PAPER
Stability of Radiation Grafted Membranes in Electro-Electrodialysis of HIX Solution
Nobuyuki Tanaka,
Nobuyuki Tanaka
Japan Atomic Energy Agency, Ibaraki, Japan
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Tetsuya Yamaki,
Tetsuya Yamaki
Japan Atomic Energy Agency, Ibaraki, Japan
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Masaharu Asano,
Masaharu Asano
Japan Atomic Energy Agency, Ibaraki, Japan
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Yasunari Maekawas,
Yasunari Maekawas
Japan Atomic Energy Agency, Ibaraki, Japan
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Kaoru Onuki,
Kaoru Onuki
Japan Atomic Energy Agency, Ibaraki, Japan
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Ryutaro Hino
Ryutaro Hino
Japan Atomic Energy Agency, Ibaraki, Japan
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Nobuyuki Tanaka
Japan Atomic Energy Agency, Ibaraki, Japan
Tetsuya Yamaki
Japan Atomic Energy Agency, Ibaraki, Japan
Masaharu Asano
Japan Atomic Energy Agency, Ibaraki, Japan
Yasunari Maekawas
Japan Atomic Energy Agency, Ibaraki, Japan
Kaoru Onuki
Japan Atomic Energy Agency, Ibaraki, Japan
Ryutaro Hino
Japan Atomic Energy Agency, Ibaraki, Japan
Paper No:
ICONE18-29359, pp. 129-133; 5 pages
Published Online:
April 8, 2011
Citation
Tanaka, N, Yamaki, T, Asano, M, Maekawas, Y, Onuki, K, & Hino, R. "Stability of Radiation Grafted Membranes in Electro-Electrodialysis of HIX Solution." Proceedings of the 18th International Conference on Nuclear Engineering. 18th International Conference on Nuclear Engineering: Volume 3. Xi’an, China. May 17–21, 2010. pp. 129-133. ASME. https://doi.org/10.1115/ICONE18-29359
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