Hydrolysis of dithionate supercritical water

Hachiro Ueda, Kosei Ihara, Tadafumi Adschiri, Kunio Arai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Dithionic acid, which is difficult to decompose, is a COD waste generated during desulfurization. Experiments were conducted to hydrolyze dithionic acid in supercritical water (SCW). It was found that decomposition rate of dithionic acid was the same regardless of whether hydrogen peroxide was added or not. Dithionic acid occurred at 100% conversion at 350°C. Activation energy for decomposition of dithionic acid in SCW under non-catalytic conditions was determined to be 39 kcal/mol and was slightly higher than activation energy of the catalytic reaction.

Original languageEnglish
Pages (from-to)281-284
Number of pages4
JournalNihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy
Issue number4
Publication statusPublished - 2004 Apr


  • Desulfurization
  • Difficulty resolution sulfur compound
  • Dithionic acid
  • Flow reactor
  • Hydrolysis
  • Supercritical Water

ASJC Scopus subject areas

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


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