| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently producing hydrogen with a microorganism. SOLUTION: In this method for producing hydrogen by using a microorganism, production of hydrogen by culture of microalga under a light aerobic condition and/or photosynthetic bacterium under a light anaerobic condition is carried out by using a transparent column type air lift culture tank 1. The culture tank has a double cylindrical structure and the production is more efficiently performed by installing a helical flow promoter 8.
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