Abstract
Due to the recent petroleum crisis, the recycling of industrial wastes, such as plastics, rubber tire and asphalt seem to be strictly necessary, Based on the fundamental researches carried out in the Osaka University, five tons per day plant for the recycling of waste plastics is now being operated in Kusatsu, sponsored by Sanyo Electric Co., Carbon dioxide and water, which are the biggest industrial wastes, are connected by me and Gaucher with the origin of petroleum.
Domestic refuses are closed up as the new energy resources and should be used for the generation of steam, which is avaiable, after superheated up to 500-600°C, for the decomposition of waste plastics and rubber tire.
Petroleum crisis suggested us that the petroleum resources are not unlimited and the uses of petroleum for car and electric power generation must be controlled to some extent and the combined use of petroleum with coal seems to be strictly necessary. With respect to the hydrogen fuel which is the most promising clean energy, the most important problem is how to produce hydrogen in the cheapest way. In the case where the hydrogen is produced by the electolysis of steam, the production cost is reported to be 200 kWh per one pound of hydrogen. It seems to be better to decompose water by the high temperature from solar energy. The decomposition of carbon dioxide to form CO and O is also should be done as the promising hydrogen resource.
