Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials
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.
- Inventors:
-
- Knoxville, TN
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 870991
- Patent Number(s):
- 5637502
- Assignee:
- Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C12 - BIOCHEMISTRY C12M - APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY
C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- enhanced; attrition; bioreactor; enzyme; hydrolysis; cellulosic; materials; process; converting; waste; paper; fuels; chemicals; sugars; ethanol; utilizing; enzymatic; major; carbohydrate; cellulose; slurry; contacted; cellulase; agitated; hydrolyzer; attritor; cellobiase; reactor; coupled; improve; reaction; efficiency; additionally; microfiltration; ultrafiltration; reverse; osmosis; steps; included; increase; resulting; converted; dilute; product; fluidized-bed; biocatalyst; microorganisms; concentrated; purified; reverse osmosis; waste paper; agitated hydrolyzer; cellulosic material; dilute product; reaction efficiency; cellulosic materials; fluidized-bed bioreactor; enzymatic hydrolysis; reactor utilizing; utilizing enzymatic; paper slurry; cellobiase reactor; converting cellulosic; bioreactor utilizing; increase reaction; improve reaction; enzyme hydrolysis; enhanced attrition; bed bioreactor; attrition bioreactor; major carbohydrate; /435/422/
Citation Formats
Scott, Timothy C, Scott, Charles D, Faison, Brendlyn D, Davison, Brian H, and Woodward, Jonathan. Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials. United States: N. p., 1997.
Web.
Scott, Timothy C, Scott, Charles D, Faison, Brendlyn D, Davison, Brian H, & Woodward, Jonathan. Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials. United States.
Scott, Timothy C, Scott, Charles D, Faison, Brendlyn D, Davison, Brian H, and Woodward, Jonathan. Wed .
"Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials". United States. https://www.osti.gov/servlets/purl/870991.
@article{osti_870991,
title = {Enhanced attrition bioreactor for enzyme hydrolysis of cellulosic materials},
author = {Scott, Timothy C and Scott, Charles D and Faison, Brendlyn D and Davison, Brian H and Woodward, Jonathan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}