| 摘要 |
PURPOSE:To obtain a hydrogen gas efficiently, by fermenting organic waste water with an acid by a bioreactor to form lower fatty acids, hydrolyzing them with a photosynthetic bacterium under light irradiation. CONSTITUTION:First, organic waste water is fed to the acid-forming bioreactor 1 having the fixed bed 1a, it is fermented with an acid in the bioreactor 1, so that higher fatty acids such as saccharides, protein, etc. are hydrolyzed into lower fatty acids such as acetic acid, propionic acid, etc. Then, the hydrolyzed organic water water is fed to the gas preparation reactor 3. In the reactor 3, the organic waste water is agitated by the stirrer 4, it is irradiated with light rays from the light source 5 such as the sun, etc., and the organic waste water is decomposed with a photosynthetic bacterium, to give the desired hydrogen gas.
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