skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Process for converting cellulosic materials into fuels and chemicals

Abstract

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.

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
6902735
Patent Number(s):
5348871 A
Application Number:
PPN: US 7-884506
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Patent File Date: 15 May 1992
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; CELLULOSE; ENZYMATIC HYDROLYSIS; LIQUID FUELS; BIOSYNTHESIS; PAPER; SACCHARIDES; BIOCONVERSION; BIOREACTORS; CHEMICAL FEEDSTOCKS; ENZYMES; CARBOHYDRATES; CHEMICAL REACTIONS; DECOMPOSITION; FUELS; HYDROLYSIS; LYSIS; MATERIALS; ORGANIC COMPOUNDS; POLYSACCHARIDES; PROTEINS; RAW MATERIALS; SOLVOLYSIS; SYNTHESIS; 090900* - Biomass Fuels- Processing- (1990-)

Citation Formats

Scott, C D, Faison, B D, Davison, B H, and Woodward, J. Process for converting cellulosic materials into fuels and chemicals. United States: N. p., 1994. Web.
Scott, C D, Faison, B D, Davison, B H, & Woodward, J. Process for converting cellulosic materials into fuels and chemicals. United States.
Scott, C D, Faison, B D, Davison, B H, and Woodward, J. Tue . "Process for converting cellulosic materials into fuels and chemicals". United States.
@article{osti_6902735,
title = {Process for converting cellulosic materials into fuels and chemicals},
author = {Scott, C D and Faison, B D and Davison, B H and Woodward, J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {9}
}