Use of Magnesium for Recovering Hydrogen Isotopes from Tritiated Water

Willms, R.S.; Konishi, Satoshi; Okuno, Kenji

doi:10.13182/fst94-a40232

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Water can react with metal like magnesium [5], zinc or iron in high temperature and produce hydrogen and metallic oxide. Iron is the primary choice for metal material, because it can effectively process tritiated water.…”

Section: Q 2 O Removalmentioning

confidence: 99%

Conceptual design on interface between ITER and tritium extraction system of Chinese helium-cooled solid breeder test blanket module

Zhang

Luo

Feng

2010

Fusion Engineering and Design

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Section: Q 2 O Removalmentioning

confidence: 99%

Conceptual design on interface between ITER and tritium extraction system of Chinese helium-cooled solid breeder test blanket module

Zhang

Luo

Feng

2010

Fusion Engineering and Design

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“…For relatively low levels of tritium, Combined Electrolysis and Catalytic Exchange process (CECE) is the preferred method for water detritiation [7]. For higher levels of tritium activity, a common process is to use hot metal beds, typically uranium or magnesium, to crack tritiated water, capturing the oxygen as a metal oxide and releasing hydrogen isotopes for further processing [8,9]. At SRS, tritiated water vapor is processed through a bed of hot magnesium metal mixed with stainless steel springs [10].…”

Section: Introductionmentioning

confidence: 99%

Water Processing for Isotope Recovery Using Porous Zero Valent Iron

Larsen

Murph

Coopersmith

et al. 2019

Fusion Science and Technology

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Reduction-oxidation cycles of metals can be harnessed to create a reusable tritiated water processing system. The concept is straightforward; a tritium-contaminated steam passes over a hot metal bed, converting the metal to a metal oxide and liberating hydrogen isotopes for further processing and isotope separation. The bed is regenerated by converting the metal oxide back to a bare metal using protium gas, creating a clean water stream. Free oxygen is not produced during the cyclical process, making it safe for use in a hydrogen processing facility, and the only by-product is detritiated water. Porous zero valent iron (p-ZVI) has been identified as an ideal candidate material for this process due to its low cost, unique morphology and favorable thermodynamics. Therefore, investigations of p-ZVI were conducted to better understand how a bed composed of such material would behave in a tritium processing facility. The thermal and physical properties were assessed, along with cycling and isotope effects. The results indicate that p-ZVI beds could serve as a low cost, reusable system for the treatment of water in tritium processing facilities.

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“…Tritiated water reduction on metal getters offers a simple and cost-effective solution to recovery tritium and reduce tritium emission. In this approach, tritiated water vapour is converted to tritium by redox reaction 6 . In order to reduce the tritium permeation at high temperature, the reducing bed should work at relative low temperature and the material should have small hydrogen inventory 7 .…”

Section: Introductionmentioning

confidence: 99%