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Heavy water recycling for producing deuterium compounds

Deuterium oxide (D(2)O) is a special variety of water that serves as a crucial resource in a range of applications, but it is a costly and unusual resource. We therefore developed a new D(2)O concentration system that combines a polymer electrolyte water electrolyzer and a catalytic combustor for re...

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Autores principales: Akutsu-Suyama, Kazuhiro, Sajiki, Hironao, Ueda, Misaki, Asamoto, Makiko, Tsutsumi, Yasuyuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9430630/
https://www.ncbi.nlm.nih.gov/pubmed/36128371
http://dx.doi.org/10.1039/d2ra04369f
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author Akutsu-Suyama, Kazuhiro
Sajiki, Hironao
Ueda, Misaki
Asamoto, Makiko
Tsutsumi, Yasuyuki
author_facet Akutsu-Suyama, Kazuhiro
Sajiki, Hironao
Ueda, Misaki
Asamoto, Makiko
Tsutsumi, Yasuyuki
author_sort Akutsu-Suyama, Kazuhiro
collection PubMed
description Deuterium oxide (D(2)O) is a special variety of water that serves as a crucial resource in a range of applications, but it is a costly and unusual resource. We therefore developed a new D(2)O concentration system that combines a polymer electrolyte water electrolyzer and a catalytic combustor for recycling used D(2)O. In this study, 1.6 L of used D(2)O, with a concentration of 93.1%, was electrolyzed for 13.6 h to obtain 0.62 L of D(2)O, with a concentration of 99.3%. In addition, the recombined water obtained by burning electrolytic gas using the catalytic combustor was also electrolyzed for 8.8 h to obtain 0.22 L of D(2)O, with a concentration of 99.0%. The estimated separation factor of this electrolyzer at 25 °C was 3.6, which is very close to the equilibrium constant of the water/hydrogen isotope exchange reaction. Recycled D(2)O was used as a deuterium source for the deuteration reaction of sodium octanoate, and 93.6% deuterated sodium octanoate was obtained. It is concluded that there were no impurities in the recycled D(2)O that interfered with the deuteration reaction. These results can lead to the development of a cost-effective deuteration method for these materials.
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spelling pubmed-94306302022-09-19 Heavy water recycling for producing deuterium compounds Akutsu-Suyama, Kazuhiro Sajiki, Hironao Ueda, Misaki Asamoto, Makiko Tsutsumi, Yasuyuki RSC Adv Chemistry Deuterium oxide (D(2)O) is a special variety of water that serves as a crucial resource in a range of applications, but it is a costly and unusual resource. We therefore developed a new D(2)O concentration system that combines a polymer electrolyte water electrolyzer and a catalytic combustor for recycling used D(2)O. In this study, 1.6 L of used D(2)O, with a concentration of 93.1%, was electrolyzed for 13.6 h to obtain 0.62 L of D(2)O, with a concentration of 99.3%. In addition, the recombined water obtained by burning electrolytic gas using the catalytic combustor was also electrolyzed for 8.8 h to obtain 0.22 L of D(2)O, with a concentration of 99.0%. The estimated separation factor of this electrolyzer at 25 °C was 3.6, which is very close to the equilibrium constant of the water/hydrogen isotope exchange reaction. Recycled D(2)O was used as a deuterium source for the deuteration reaction of sodium octanoate, and 93.6% deuterated sodium octanoate was obtained. It is concluded that there were no impurities in the recycled D(2)O that interfered with the deuteration reaction. These results can lead to the development of a cost-effective deuteration method for these materials. The Royal Society of Chemistry 2022-08-31 /pmc/articles/PMC9430630/ /pubmed/36128371 http://dx.doi.org/10.1039/d2ra04369f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Akutsu-Suyama, Kazuhiro
Sajiki, Hironao
Ueda, Misaki
Asamoto, Makiko
Tsutsumi, Yasuyuki
Heavy water recycling for producing deuterium compounds
title Heavy water recycling for producing deuterium compounds
title_full Heavy water recycling for producing deuterium compounds
title_fullStr Heavy water recycling for producing deuterium compounds
title_full_unstemmed Heavy water recycling for producing deuterium compounds
title_short Heavy water recycling for producing deuterium compounds
title_sort heavy water recycling for producing deuterium compounds
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9430630/
https://www.ncbi.nlm.nih.gov/pubmed/36128371
http://dx.doi.org/10.1039/d2ra04369f
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