A novel process has been developed for selective and efficient recovery of gold from solid compound containing various metals. Gold released to gas phase in a chlorine gas stream and solid carbon adsorbed the volatilized gold selectively. The optimum reaction condition for vaporization and capture of gold was determined.
Compact size generator, which has high power-generation and high efficiency at a low speed, is provided for a low speed generation such as a wind power and a hydroelectric power generation. A structure of magnetic modulation is applied in the new generator, so its power-generation performance at the low speed is improved.
It is necessary to remove the toxic heavy metals from the cellulosic plant biomass produced in Japan, in which there are many fields that the heavy metals concentration are high. By the application of our developed techniques, it will be possible the perfect removal of cadmium from the plant biomass, and produce Cd free liquid and solid waste in the biorefinery process.
The anode catalyst of the alkaline direct ethanol fuel, which can use biotech ethanol as fuel, was investigated.
The Pt oxide treated by electrochemical reduction showed an excellent activity for ethanol oxidation in an alkaline solution compared with the present catalyst.
We developed a new sensor using piezoelectric films or cables to detect bed-leaving behavior. The feature of this sensoris continuous measuring of pose changes without electric power supply. This sensor can detect sleeping and sitting poses installed under a bed sheet.