Process for converting cellulosic materials into fuels and chemicals
A process is described for converting cellulosic materials, such as waste paper, into fuels and chemicals utilizing enzymatic hydrolysis of the major constituent of paper, cellulose. A waste paper slurry is contacted by cellulase in an agitated hydrolyzer. The cellulase is produced from a continuous, columnar, fluidized-bed bioreactor utilizing immobilized microorganisms. An attrition mill and a cellobiase reactor are coupled to the agitated hydrolyzer to improve reaction efficiency. The cellulase is recycled by an adsorption process. The resulting crude sugars are converted to dilute product in a fluidized-bed bioreactor utilizing microorganisms. The dilute product is concentrated and purified by utilizing distillation and/or a biparticle fluidized-bed bioreactor system. 1 fig.
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- A; US 5348871
- Application Number:
- PPN: US 7-884506
- OSTI ID:
- 6902735
- Country of Publication:
- United States
- Language:
- English
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Enhanced attrition bioreactor for enzyme hydrolysis or cellulosic materials
Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials
Related Subjects
090900* -- Biomass Fuels-- Processing-- (1990-)
BIOCONVERSION
BIOREACTORS
BIOSYNTHESIS
CARBOHYDRATES
CELLULOSE
CHEMICAL FEEDSTOCKS
CHEMICAL REACTIONS
DECOMPOSITION
ENZYMATIC HYDROLYSIS
ENZYMES
FUELS
HYDROLYSIS
LIQUID FUELS
LYSIS
MATERIALS
ORGANIC COMPOUNDS
PAPER
POLYSACCHARIDES
PROTEINS
RAW MATERIALS
SACCHARIDES
SOLVOLYSIS
SYNTHESIS