Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Patent
1994-05-09
1996-04-16
Wityshyn, Michael G.
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
435262, 435276, 435277, 435161, 435105, 435209, 435163, 422234, 241 4617, C12S 310, C12P 710, C12P 706, C12N 942
Patent
active
055081835
ABSTRACT:
A process for converting cellulosic materials, such as waste paper, into fuels and chemicals, such as sugars and ethanol, utilizing enzymatic hydrolysis of the major carbohydrate of paper: cellulose. A waste paper slurry is contacted by cellulase in an agitated hydrolyzer. An attritor and a cellobiase reactor are coupled to the agitated hydrolyzer to improve reaction efficiency. Additionally, microfiltration, ultrafiltration and reverse osmosis steps are included to further increase reaction efficiency. The resulting sugars are converted to a dilute product in a fluidized-bed bioreactor utilizing a biocatalyst, such as microorganisms. The dilute product is then concentrated and purified.
REFERENCES:
patent: 5248484 (1993-09-01), Scott et al.
patent: 5270189 (1993-12-01), Scott
patent: 5348871 (1994-09-01), Scott et al.
Riley R. "Reverse Osmosis" Membrane Separation Systems Apr. 1990 vol. 2 US D.O.E. Office of Energy Research.
Wright et al. "Simultaneons Saccharification and Fermentation of Lignocellulose" The Humana Press 1988 pp. 75 -90.
Davison Brian H.
Faison Brendlyn D.
Scott Charles D.
Scott Timothy C.
Woodward Jonathan
Adams H. W.
Martin Marietta Energy Systems Inc.
Reardon Timothy J.
Smirman P. H.
Wityshyn Michael G.
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