Tritium extraction in aluminum metal by heating method without melting
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초록
Tritium was extracted from tritium-contaminated aluminum samples by heating it in a high-temperaturefurnace at 200, 300, or 400 C for 15 h. The extracted tritium was analyzed by using a liquid scintillationcounter (LSC); the sample thicknesses were 0.4 and 2 mm. The differences in tritium extraction over timewere also investigated by cutting aluminum stick samples into several pieces (1, 5, 10, and 15) with thesame thickness, and subsequently heating them. The results revealed that there are most of the hydratedmaterial based on tritium on the surface of aluminum. When the temperature was increased from 200 or300 Ce400 C, there are no large differences in the heating duration required for the radioactivityconcentration to be lower than the MDA value. Additionally, at the same thickness, because the surface ofaluminum is only contaminated to tritiated water, cutting the aluminum samples into several pieces (5,10, and 15) did not have a substantial effect on the tritium extraction fraction at any of the appliedheating temperatures (200, 300, or 400 C). The proportion of each tritium-release materials (aluminumhydrate based on tritium) were investigated via diverse analyses (LSC, XRD, and SEM-EDS).
Abstract
Tritium was extracted from tritium-contaminated aluminum samples by heating it in a high-temperaturefurnace at 200, 300, or 400 C for 15 h. The extracted tritium was analyzed by using a liquid scintillationcounter (LSC); the sample thicknesses were 0.4 and 2 mm. The differences in tritium extraction over timewere also investigated by cutting aluminum stick samples into several pieces (1, 5, 10, and 15) with thesame thickness, and subsequently heating them. The results revealed that there are most of the hydratedmaterial based on tritium on the surface of aluminum. When the temperature was increased from 200 or300 Ce400 C, there are no large differences in the heating duration required for the radioactivityconcentration to be lower than the MDA value. Additionally, at the same thickness, because the surface ofaluminum is only contaminated to tritiated water, cutting the aluminum samples into several pieces (5,10, and 15) did not have a substantial effect on the tritium extraction fraction at any of the appliedheating temperatures (200, 300, or 400 C). The proportion of each tritium-release materials (aluminumhydrate based on tritium) were investigated via diverse analyses (LSC, XRD, and SEM-EDS).
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