Capture and isotopic exchange method for water and hydrogen isotopes on zeolite catalysts up to technical scale for pre-study of processing highly tritiated water

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · Fusion Science and Technology

DOI:https://doi.org/10.13182/FST14-T60· OSTI ID:22429747

Michling, R.; Braun, A.; Cristescu, I.; Dittrich, H.; Gramlich, N.; Lohr, N. ^[1]; Glugla, M.; Shu, W.; Willms, S. ^[2]

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1. Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen (Germany)
2. ITER Organization, Saint-Paul-lez-Durance (France)

Highly tritiated water (HTW) may be generated at ITER by various processes and, due to the excessive radio toxicity, the self-radiolysis and the exceedingly corrosive property of HTW, a potential hazard is associated with its storage and process. Therefore, the capture and exchange method for HTW utilizing Molecular Sieve Beds (MSB) was investigated in view of adsorption capacity, isotopic exchange performance and process parameters. For the MSB, different types of zeolite were selected. All zeolite materials were additionally coated with platinum. The following work comprised the selection of the most efficient zeolite candidate based on detailed parametric studies during the H{sub 2}/D{sub 2}O laboratory scale exchange experiments (about 25 g zeolite per bed) at the Tritium Laboratory Karlsruhe (TLK). For the zeolite, characterization analytical techniques such as Infrared Spectroscopy, Thermogravimetry and online mass spectrometry were implemented. Followed by further investigation of the selected zeolite catalyst under full technical operation, a MSB (about 22 kg zeolite) was processed with hydrogen flow rates up to 60 mol*h{sup -1} and deuterated water loads up to 1.6 kg in view of later ITER processing of arising HTW. (authors)

• OSTI ID: 22429747
• Journal Information: Fusion Science and Technology, Vol. 67, Issue 3; Conference: TRITIUM 2013: 10. International Conference on Tritium Science and Technology, Nice Acropolis (France), 21-25 Oct 2013; Other Information: Country of input: France; 6 refs.; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION SPECTROSCOPY
ADSORPTION
AUTORADIOLYSIS
DEUTERIUM
HEAVY WATER
HYDROGEN
INFRARED SPECTRA
ISOTOPIC EXCHANGE
ITER TOKAMAK
MASS SPECTROSCOPY
MOLECULAR SIEVES
PARAMETRIC ANALYSIS
PLATINUM
THERMAL GRAVIMETRIC ANALYSIS
TRITIUM
TRITIUM OXIDES
ZEOLITES