4490468 Production of ethanol by yeast using xylulose

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PATENT ABSTRACTS

ture of about -10 degrees F., without forming ice, thereby to form (1) a gasohol blend containing about 10 wt. % ethanol and (2) an aqueous stream comprising some ethanol and traces of gasoline; extracting the gasoline-containing aqueous stream with a minor stream of the fermentation ethanol product in order to recover the gasoline it contains; and recovering said blend to produce a gasohol product undersaturated with water at all operating temperatures above -10 degrees F.

4490467

4490469 PRODUCTION OF ETHANOL FERMENTATION

BY

Kevin D Kirby, Christopher J Mardon, Lower Plenty, Australia assigned to Commonwealth Scientific and Industrial Research Organization The production of ethanol, particularly ethanol used as a fuel, optionally in conjunction with gasoline (petrol) may be produced from carbohydrate containing material, such as starchcontaining material or sugar-containing material, by a solid phase fermentation process.

POLYSACCHARIDE PRODUCTION USING NOVEL STRAINS OF PSEUDOMONAS MENDOCINA

4491522 Trevor Jarman, Andrew Hacking, Haslingfield, United Kingdom assigned to Kelco Biospecialties Ltd • CIDI'

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ANAEROBIC DIGESTION PROCESS FOR ORGANIC WASTES

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Masahiko Ishida, Ryoichi Haga, Tadashi Ishibashi, Yoji Odawara, Hitachi, Japan assigned to Agency of Industrial Science & Technology

A process for producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues comprises growing a biologically pure culture of a Pseudomonas mendocina microorganism selected from the group consisting of NCIB 11687, 11688, and 11689 in an aqueous nutrient medium by submerged aerobic fermentation of an assimilable carbon source and recovering the polysaccharide. Biologically pure cultures of the organisms are another feature of the invention.

4490468 PRODUCTION OF ETHANOL YEAST USING XYLULOSE

BY

Cheng Shun Gong, Li Fu Chen, Michael C Flickinger, George T Tsao assigned to Purdue Research Foundation Ethanol is produced by the fermentation of xylulose using yeast under fermentative conditions.

The present invention relates to an anaerobic digestion process for organic wastes with a high efficiency and an improved recovery rate of methane. This process comprises the following steps: (l) anaerobically digesting organic wastes under simultaneous presence of facultative anaerobic bacteria and obligatory anaerobic bacteria, (2) separating the anaerobically digested slurry obtained from the step (1) into a liquor fraction containing the two groups of bacteria and an undecomposed solid fraction, (3) mixing the liquor fraction obtained from the step (2) with the surplus activated sludge slurry produced by anaerobically treating organic waste water, under anaerobic condition, (4) separating the mixed slurry obtained from the step (3) into a solid fraction containing the surplus activated sludge which has absorbed the two groups of bacteria and a liquor fraction, and recycling back the solid fraction obtained from the step (4) as the sources of the two groups of bacteria and nitrogen to the step (1).