Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Ethanol production in a fluidized-bed bioreactor utilizing flocculating Zymomonas mobilis with biomass recycle

Conference ·
OSTI ID:5761421
Bench-scale, fluidized-bed bioreactor systems are being used to convert glucose to ethanol by particles of a flocculating strain of Zymomonas mobilis; ethanol production rates in excess of 600 g/L.h have been achieved. The systems have been operated successfully for extended periods (500 h) while using unsterilized feed with glucose concentrations in the range 100 to 160 g/L. The primary bioreactor was also operated in the absence of necessary nutrients but coupled to a small secondary reactor in which the biomass particles were recycled and exposed to small amounts of the nutrients.
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
5761421
Report Number(s):
CONF-830567-4; ON: DE83015523
Country of Publication:
United States
Language:
English