A Methodology of the Cryogenic Adsorbent Selection for He-3 Separation in Low Tritium Level by Modified Langmuir Equation

In this study, the cryogenic adsorption is performed for its applicability to the helium-3 collection loop in the ITER SDS (Storage and Delivery System). In the ITER SDS the residual tritium shall be also separated from helium-3 produced by tritium decay. MS5A, Zeolite, charcoal and Basolite Z1200 are used as adsorbents for the cryogenic adsorption experiments. Langmuir parameters of each adsorbent are obtained from the experiments. A modified Langmuir equation is newly proposed as a selection method of the best adsorbent among them in the range of very low tritium. The cryogenic adsorption is performed for its applicability to the helium-3 collection loop in the ITER SDS. MS5A, Zeolite, charcoal and Basolite Z1200 are used as adsorbents for the cryogenic adsorption experiments. Langmuir parameters of each adsorbent are obtained from the experiments. A modified Langmuir equation is newly proposed as a selection method of the best adsorbent among them in the range of very low tritium. According to this analytical method, Zeolite is selected as the best adsorbent for the helium-3 collection loop of the ITER SDS