Abstract
The important subjects of technology in the 21th century are predicted to be the balance of environmental and resource and/or energy problems. These problems will only come to satisfactory solution by exploitation of resourse in wastes.
Nowadays, the hydrothermal reaction has been applied in inorganic fields such as crystal growth, powder synthesis, wet metallurgy, and so on. Some following new processes and technologies which relate the organic waste problems to resource, are presented;
1) Geo-chemical process; a) Application to liquefaction and gasification of organic wastes in geochemical reactor for advanced geothermal energy utilization. b) Hydrothermal degradation of toxic and hazardous materials such as chlorinated organic materials (PCBs, Dioxines, BHC, etc. ).
2) Wet combustion process; Combination of organic waste treatment with wet combustion (application to make a liquid fertilizer for sterile land and ocean and to make a new power plant process).
