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4840902 Continuous process for ethanol production by bacterial fermentation using pH control
Fuels, Chemicals and Metals from Bioprocesses
4839053
between a pH of about 3.8 and a pH less than 4.5, it is possible to optimize kinetic parameters, such as cp (g substrate/g biomass-hr-1) and op (g ethanol/g biomass-hr-1) without adversely affecting ethanol concentration in the fermentation medium.
BIOMASS GROWTH PROCESS WITH SEPARATE AERATION AND MEDIA COMPARTMENTS Charles E Tharp assigned to Ashbrook-SimonHartley Carp; Simon-Hart1
-3
A process and an apparatus is provided for growing biomass from a supply of nutrient in a manner which permits precise control of the biomass growth environment. A reaction vessel includes a media-free compartment and a media compartment which retains biomass support bodies. A screen separates the two compartments Nutrient is circulated through the media compartment, passed through the screen and is oxygenated and/or re-circulated between said compartments. As shown in FIG. 3, additional pairs of media-free and media compartments can be connected in series to provide a single reaction vessel. Suspended or packed biomass support bodies can be used and can be continuously or intermittently removed for cleaning.
484o!m2 CONTINUOUS PROCESS FOR ETHANOL PRODUCTION BY BACTERIAL FERMENTATION USING PH CONTROL Hugh G Lawford, Mississauga, signed to George Weston Limited
Canada
as-
A continuous process for the production of ethanol by fermentation of an organism of the genus Zymomonas is provided. The method is carried out by cultivating the organism under substantially steady state, anaerobic conditions and under conditions in which ethanol production is substantially uncoupled from cell growth. By controlling pH in the fermentation medium
PROCESS FOR PRODUCING ETHANOL FROM PLANT BIOMASS USING THE FUNGUS PAECILOMYCES SP. Jung Fu Wu assigned to The United States of America as represented by the United States Department of Energy A process for producing ethanol from plant biomass is disclosed. The process in eludes forming a substrate from the biomass with the substrate including hydrolysates of cellulose and hemicellulose. A species of the fungus Paecilomyces, which has the ability to ferment both cellobiose and xylose to ethanol, is then selected and isolated. The substrate is inoculated with this fungus, and the inoculated substrate is then fermented under conditions favorable for cell viability and conversion of hydrolysates to ethanol. Finally, ethanol is recovered from the fermented substrate.
4851350 MICROBIAL
DESULFURIZATION OF COAL
Stanley E Stevens, Wilella D Burgess assigned to The Standard Oil Company A process for the microbial desulfurization of the coal utilizing Hansenula sydowiorum, Hansenula ciferrii, Hansenula lynferdii, and/or Cryptococcus albidus.
4839053
between a pH of about 3.8 and a pH less than 4.5, it is possible to optimize kinetic parameters, such as cp (g substrate/g biomass-hr-1) and op (g ethanol/g biomass-hr-1) without adversely affecting ethanol concentration in the fermentation medium.
BIOMASS GROWTH PROCESS WITH SEPARATE AERATION AND MEDIA COMPARTMENTS Charles E Tharp assigned to Ashbrook-SimonHartley Carp; Simon-Hart1
-3
A process and an apparatus is provided for growing biomass from a supply of nutrient in a manner which permits precise control of the biomass growth environment. A reaction vessel includes a media-free compartment and a media compartment which retains biomass support bodies. A screen separates the two compartments Nutrient is circulated through the media compartment, passed through the screen and is oxygenated and/or re-circulated between said compartments. As shown in FIG. 3, additional pairs of media-free and media compartments can be connected in series to provide a single reaction vessel. Suspended or packed biomass support bodies can be used and can be continuously or intermittently removed for cleaning.
484o!m2 CONTINUOUS PROCESS FOR ETHANOL PRODUCTION BY BACTERIAL FERMENTATION USING PH CONTROL Hugh G Lawford, Mississauga, signed to George Weston Limited
Canada
as-
A continuous process for the production of ethanol by fermentation of an organism of the genus Zymomonas is provided. The method is carried out by cultivating the organism under substantially steady state, anaerobic conditions and under conditions in which ethanol production is substantially uncoupled from cell growth. By controlling pH in the fermentation medium
PROCESS FOR PRODUCING ETHANOL FROM PLANT BIOMASS USING THE FUNGUS PAECILOMYCES SP. Jung Fu Wu assigned to The United States of America as represented by the United States Department of Energy A process for producing ethanol from plant biomass is disclosed. The process in eludes forming a substrate from the biomass with the substrate including hydrolysates of cellulose and hemicellulose. A species of the fungus Paecilomyces, which has the ability to ferment both cellobiose and xylose to ethanol, is then selected and isolated. The substrate is inoculated with this fungus, and the inoculated substrate is then fermented under conditions favorable for cell viability and conversion of hydrolysates to ethanol. Finally, ethanol is recovered from the fermented substrate.
4851350 MICROBIAL
DESULFURIZATION OF COAL
Stanley E Stevens, Wilella D Burgess assigned to The Standard Oil Company A process for the microbial desulfurization of the coal utilizing Hansenula sydowiorum, Hansenula ciferrii, Hansenula lynferdii, and/or Cryptococcus albidus.