Kinetics of ethanol fermentations in membrane cell recycle fermentors

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260290910· OSTI ID:6433659

Lee, C W; Chang, H N

Ethanol fermentation by yeast was carried out in a cell filtration recycle system with a hollow-fiber membrane filter. Maximum biomass concentrations up to 210 g dry wt/L were obtained, but in normal operation concentrations they were between 100 and 150 g/L. The ethanol productivity using 14% glucose feed was 85 g/L h, with an ethanol concentration of 65 g/L and an ethanol yield of over 90%. The ethanol productivity and yeast growth rate decreased as the cell concentration increased beyond a certain level. The cell mass in the reactor was maintained by a proper manipulation of dilution rate and bleed ratio depending on the growth rate.

• Research Organization: Korea Advanced Institute of Science and Technology, Seoul
• OSTI ID: 6433659
• Journal Information: Biotechnol. Bioeng.; (United States), Journal Name: Biotechnol. Bioeng.; (United States) Vol. 29:9; ISSN BIBIA
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090222* -- Alcohol Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
ALCOHOLS
ALDEHYDES
BIOCONVERSION
BIOREACTORS
CARBOHYDRATES
ETHANOL
FERMENTATION
FILTERS
FUNGI
GLUCOSE
GROWTH
HEXOSES
HYDROXY COMPOUNDS
MICROORGANISMS
MONOSACCHARIDES
ORGANIC COMPOUNDS
PLANTS
SACCHARIDES
YEASTS
YIELDS