Enrichment and Volume Reduction of Tritiated Water Using Combined Electrolysis Catalytic Exchange

Spagnolo, D. A.; Everatt, A. E.; Seto, Paul W. K.; Chuang, Karl T.

doi:10.13182/fst88-a25182

Cited by 18 publications

(1 citation statement)

References 5 publications

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“…T is a radioactive isotope in the hydrogen group, and the almost all of the T in light water (H 2 O) exists as an isotopic water form: HTO. However, the extraction of trace amounts of T from large quantities of water is fundamentally difficult with respect to technology and economy when using any conventional method, such as distillation (1)(2)(3) and the catalytic exchange between H and T using hydrogen gas (H 2 ) with precious metals (3)(4)(5)(6)(7)(8), due to the similarities between in the physicochemical features of the isotopes in water or gas, except for small differences in weight and radioactivity. Manganese oxides crystallize to form various phases (9), and the spinel crystal structure in the Fd3m space group adopts the chemical form of LiMn 2 O 4 (10,11).…”

Section: Introductionmentioning

confidence: 99%

Extracting Tritium from Water Using a Protonic Manganese Oxide Spinel

Koyanaka¹,

Miyatake

2015

Separation Science and Technology

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Extracting tritium of parts-per-trillion-levels from water at room temperature was provided using a protonic manganese oxide with a spinel crystal structure under weakly acidic conditions. Indeed, using 0.48 g of the protonic manganese oxide powder led to the removal of 1.75 × 10 5 Bq of tritium in 20 min at room temperature from a test water (100 mL) that contained a tritium concentration of 5.6 × 10 6 Bq/L (i.e., 15.6 ng/L). The extraction capability of tritium Downloaded by [Stockholm University Library] at 20:32 11 August 2015A c c e p t e d M a n u s c r i p t 2 significantly depended on the crystal structure of manganese oxides and the proton content in the spinel crystal structure.

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