Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials
A process is described 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. 1 fig.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Conservation and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- US 5,637,502/A/
- Application Number:
- PAN: 8-591,272
- OSTI ID:
- 489076
- Resource Relation:
- Other Information: PBD: 10 Jun 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials
Enhanced attrition bioreactor for enzyme hydrolysis or cellulosic materials