海藻を利用した資源循環

抄録

Seaweed contains high high-density glucose, from which ethanol or materials such as biodegradable plastic, have been recently produced. A floatable block made from waste glass, that saves on labor and costs, has been developed to culture seaweed. Seaweeds collect nutrients such as nitrogen and phosphorus from eutrophic areas during cultivation. This floatable block would be able to supply nutrients, via a slow release method, in oligotrophic areas; this would constitute most of the exclusive economic zone (EEZ) in Japan. A shortfall in phosphorus supply is feared in the near feature, thereby making it necessary to obtain it from deep sea water through the cultivation of seaweed.
The material for the floatable b lock would be supplied from coal ash or incineration ash, and so on by separating rare earth metals and metals using a high high-temperature melting furnace. The separated rare earth metals and metals may be recycled. Large volumes of ethanol made from seaweed can be used as a motor fuel. As the exhaust gases from an ethanol ethanol-fueled car are more toxic than those from a conventionally fueled one, under low low-temperature operation, catalyst activity would need to be assisted by electric discharge with a switching dev ice, namely MOS MOS-assisted gate triggered thyristor (MAGT), which achieves both high speed and high capacity. MAGT was developed for excimer laser.