| 摘要 |
Seaweed grown at sea by hydroculture is harvested, dried and burnt to produce electricity. Combustion gases are returned to the sea water so that carbon dioxide can be used for photosynthesis. The ash is added to the seawater as nutrient salts for the seaweed. Seaweed is grown at sea in an open or closed hydroculture system with the aid of nutrient salts obtained from the sea itself or from the ash of burnt seaweed. A small amount of the seaweed (e.g. 0.1 %) harvested for burning is cut into pieces with a size of e.g. 1 cm and thrown back into the sea so that seaweed continues to grow. The rest of the seaweed is dried and burnt, the combustion gases generated when the seaweed is burnt are treated to remove carbon dioxide, by passing the gases through the seawater. The carbon dioxide is useful to the growing seaweed for photosynthesis. |
