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A Brief Review on Membrane-Based Hydrogen Isotope Separation

막 기반 수소동위원소 분리 연구에 대한 총설

  • Soon Hyeong So (Department of Chemical and Biomolecular Engineering, YONSEI University) ;
  • Dae Woo Kim (Department of Chemical and Biomolecular Engineering, YONSEI University)
  • 소순형 (연세대학교 화공생명공학과) ;
  • 김대우 (연세대학교 화공생명공학과)
  • Received : 2024.03.20
  • Accepted : 2024.04.04
  • Published : 2024.04.30

Abstract

Hydrogen isotopes can be categorized into light hydrogen, heavy hydrogen, and tritium based on the number of neutrons, each of which is used in specific fields. Specifically, deuterium is of interest in the electronics industry, nuclear energy industry, analytical technology industry, pharmaceutical industry, and telecommunications industry. Conventional methods such as cold distillation, thermal cycling absorption processes, Girdler sulfide processes, and water electrolysis have their own advantages and disadvantages, leading to the need for alternative technologies with high separation and energy efficiency. In this context, membrane-based hydrogen isotope separation is one of the promising solutions to reduce energy consumption. In this review, we will present the state-of-the-art in hydrogen isotope separation using membranes and their operating principles. The technology for separating hydrogen isotopes using membranes is just beginning to be conceptualized, and many challenges remain to be overcome. However, if achieved, the economic benefits are expected to be significant. We will discuss future research directions for this purpose.

수소 동위 원소는 중성자 수에 따라 경수소, 중수소, 삼중수소로 분류될 수 있으며, 각 원소는 특정 분야에서 사용되고 있다. 구체적으로, 중수소는 전자 산업, 원자력에너지 산업, 분석기술 산업, 의약품 산업, 그리고 통신 산업에서 관심을 받고 있다. 냉각 증류, 열 주기 흡수 공정, Girdler sulfide 공정, 그리고 수전해와 같은 기존의 방법들은 각각의 장단점을 가지고 있지만, 공통적으로 막대한 에너지를 필요로 하는 공정에 기반한다는 문제점을 가지고 있다. 높은 에너지 효율을 보이는 기술을 기반으로 분리하는 공정의 개발이 요구되는 실정이다. 이런 맥락에서 막을 사용한 수소 동위 원소 분리 기술이 에너지 소비를 줄이는 유망한 해결책 중 하나라 볼 수 있다. 이 총설에서는 분리막을 활용한 수소 동위원소 분리에 관한 선행 연구와 그들의 작동 원리를 소개하고자 한다. 특히 최근 제시되고 있는, 그래핀 기반 전기적 펌핑을 통한 수소 동위원소 분리기술에 대하여 다루고자 한다. 분리막을 활용한 수소 동위원소 분리에 대한 기술은 이제 개념이 제안되기 시작한 단계이며, 많은 부분에서 해결해야 할 난제가 있다. 그러나 이를 달성할 경우 경제적인 효과가 상당할 것으로 판단된다. 이를 위한 향후 연구 방향에 대해서 논하고자 한다.

Keywords

Acknowledgement

This work was supported by the Industrial Strategic Technology Development Program ("Development of deuterium oxide localization and deuterium benzene synthesis technology to improve OLED lifetime by 25%", "20022479") funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

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