Assessment of Concept Feasibility of Combined Electrolysis and Catalytic Exchange in Decontamination of Low Deuterium – Tritiated Heavy Water

Shenoy, Niranjan S.; Mistry, Krunal; Bhanja, Kalyan; Mohan, Sadhana

doi:10.1016/j.nucengdes.2021.111068

Cited by 3 publications

(1 citation statement)

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“…Electrolysis was the first widely used method for deuterium enrichment and is currently used in combination with the catalytic isotope exchange technique, in which >99% of separation is reached in the isotope exchange step [7]. This combination is used for tritium extraction from CANDU reactors [13,14] and foreseen in the nuclear fusion demonstration reactor DEMO [15]. However, this technique involves high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Graphene-based electrochemical system for tritium enrichment

Zabolockis,

Sondars,

Vaivars

et al. 2024

Nucl. Fusion

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In this study, tritium enrichment system in a water phase has been developed based on the combination of a proton exchange membrane (PEM) electrolysis cell and fuel cell. As a PEM NafionTM and laboratory synthesized sulfonated poly ether ether ketone membranes modified with additional graphene layer in order to enhance tritium separation factor was used. Both differences in the kinetics of the hydrogen evolution reaction and transport through the graphene layer of different isotopes are the driving factors expecting to affect the separation of hydrogen isotopes. The separation factor was measured both during the electrolysis and fuel cell stage by using different membranes. The facilitating effect of the graphene on the separation efficiency was determined during the study. Separation factor obtained by the proposed method was evidently higher than by other conventional methods.

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Section: Introductionmentioning

confidence: 99%