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Title: Process for converting cellulosic materials into fuels and chemicals

Abstract

A process 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 attritor 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.

Inventors:
 [1];  [2];  [2];  [1]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
869506
Patent Number(s):
5348871
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; converting; cellulosic; materials; fuels; chemicals; waste; paper; utilizing; enzymatic; hydrolysis; major; constituent; cellulose; slurry; contacted; cellulase; agitated; hydrolyzer; produced; continuous; columnar; fluidized-bed; bioreactor; immobilized; microorganisms; attritor; cellobiase; reactor; coupled; improve; reaction; efficiency; recycled; adsorption; resulting; crude; sugars; converted; dilute; product; concentrated; purified; distillation; biparticle; waste paper; agitated hydrolyzer; cellulosic material; dilute product; reaction efficiency; cellulosic materials; fluidized-bed bioreactor; enzymatic hydrolysis; reactor utilizing; utilizing enzymatic; biparticle fluidized; paper slurry; cellobiase reactor; converting cellulosic; bioreactor utilizing; adsorption process; improve reaction; sorption process; bed bioreactor; major constituent; /435/422/

Citation Formats

Scott, Charles D., Faison, Brendlyn D., Davison, Brian H., and Woodward, Jonathan. Process for converting cellulosic materials into fuels and chemicals. United States: N. p., 1994. Web.
Scott, Charles D., Faison, Brendlyn D., Davison, Brian H., & Woodward, Jonathan. Process for converting cellulosic materials into fuels and chemicals. United States.
Scott, Charles D., Faison, Brendlyn D., Davison, Brian H., and Woodward, Jonathan. Sat . "Process for converting cellulosic materials into fuels and chemicals". United States. https://www.osti.gov/servlets/purl/869506.
@article{osti_869506,
title = {Process for converting cellulosic materials into fuels and chemicals},
author = {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 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 attritor 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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