Georeactor: Advanced geothermal energy utilization for material processing and hydrogen generation

N. Tsuchiya, Y. Suto, K. Nakatsuka

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)


The chemical processes and design of a georeactor in the geothermal environment is proposed for direct utilization of geothermal energy resources. Material processing apparatus, comprising high aspect ratio, double and/or multiple tube reactors, were used for chemical reactions installed in a drill hole, with a steam generator supplying hot water and steam for a surface chemical reactor. Chemical processes in the georeactor require mild reaction conditions, accommodating a range of operating conditions, since the georeactor utilizes natural resources that are sometimes difficult to control. A hydrogen generating system, produced from hydrogen sulfide and a high performance photocatalysis, was examined as a case study for use of the georeactor. Hydrogen generation by solar energy from hydrogen sulfide, and recycling of waste sulfur and its compounds using geothermal energy is a potential, environmentally friendly energy supply system.

Original languageEnglish
Pages (from-to)111-114
Number of pages4
JournalTransactions - Geothermal Resources Council
Publication statusPublished - 2003 Dec 1
EventInternational Collaboration for Geothermal Energy in the Americas - Geothermal Resources Counsil: 2003 Annual Meeting - Morelia, Michoacan, Mexico
Duration: 2003 Oct 122003 Oct 15


  • Direct use
  • Georeactor
  • Hydrogen generator
  • Material processing
  • Steam generator

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics


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