Supercrical fluid technology for generic technology

Tadafumi Adschiri, Kunio Arai

Research output: Contribution to journalArticle

Abstract

In recent years, Supercritical Fluids (SCF) have been shown to be effective solvents and reactants in applications of interest to industry. In extraction of natural products with Supercritical CO 2, product separation is achieved simply by reducing the system pressure since CO 2 is a gas at ambient conditions. In washing, supercritical CO 2 can replace many freons which will greatly lower the use of harmful chemicals that generate greenhouse gases. In reactions, supercritical water (SCW) is an excellent solvent for crystallization of inorganics for fine particle production. The crystallization atmosphere can be easily controlled with temperature and pressure. In many cases, SCW provides a homogeneous reaction environment and high reaction rates and mass transfer. SCW promotes hydrolysis reactions of biomass. cellulose and plastics such as PET for resource and energy recovery applications. SCW has also been applied to waste treatment (oxidation) and heavy oil upgreading. SCF technology can be widely applied throughout chemical industries.

Original languageEnglish
Pages (from-to)844-845
Number of pages2
JournalNihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy
Volume76
Issue number9
Publication statusPublished - 1997 Dec 1

Keywords

  • Crystallization
  • Decomposition
  • Hydrolysis reaction
  • Recycle
  • Separation technique
  • Supercritical fluid technology
  • Waste treatment

ASJC Scopus subject areas

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

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