PHOTOBIOREACTORS FOR MICROALGAL MASS CULTURES AND CULTIVATION METHODS USING THEM

摘要

PURPOSE: A photobioreactor of a floating type comprising a culture container and floating device is provided to maximize culture efficiency and to cheaply culture a large amount of microalgae. CONSTITUTION: A photobioreactor(100) of a floating type comprises: a culture container r formed of a transparent materail and a floating device fixed to the culture container. The culture container comprises a reaction chamber(3) for containing microalgae inner space; a first film(1) which forms a part of the outer wall; and a second film(2) which forms a part of the outer wall at a different position from the first film and has different characteristic from the first film. The first film has a semi-transparent film having selective penetration by oxygen or carbon dioxide. The second film has a semi-transparent film with selective penetration by water and nutritional salt.