To provide a production process for lactic acid by fermentation of high production efficiency as the feedstock costs are reduced and an apparatus useful in the production process.
This apparatus for producing lactic acid is a bioreactor of bubble tower type having a specific structure comprising the body vessel having the cylindrical wall face, the reversed cone bottom and the cap equipped with an exhaustion pipe on its top, a draft tube 3 fixed almost in parallel with the body wall inside the body vessel, an air-sparger 2 set between the bottom face of the reversed cone and the lower end of the draft tube 3, an air pipe feeding a gas from the outside of the bioreactor vessel to the air-sparger, a jacket 5 covering the outer wall surface and controlling the temperature and at least one of liquid-feeding pipes connected to the body vessel. A microorganism belonging to the genus Rhizopus is cultured in an aqueous culture medium containing a carbon source such as starch, while air is sparged from the bottom of the reactor.
| JP6377927 | Organic substance manufacturing method and organic substance manufacturing equipment |
| JP2002355023 | BIOREACTOR |
| JP2002018423 | METHOD FOR TREATING POLLUTANT |
BOKU RIYUUSHIYU
NISHINA NAOKI
KOSAKAI HIROKO
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