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Title: Tower reactors for bioconversion of lignocellulosic material

Abstract

An apparatus is disclosed for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material. The apparatus consists of a tower bioreactor which has mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.

Inventors:
Issue Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
597113
Patent Number(s):
5733758
Application Number:
PAN: 8-780,943
Assignee:
PTO; SCA: 090900; PA: EDB-98:041985; SN: 98001932709
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 31 Mar 1998
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; BIOREACTORS; ENZYMATIC HYDROLYSIS; FERMENTATION; CELLULOSE; LIGNIN; DESIGN; MIXING; HEAT TRANSFER

Citation Formats

Nguyen, Q A. Tower reactors for bioconversion of lignocellulosic material. United States: N. p., 1998. Web.
Nguyen, Q A. Tower reactors for bioconversion of lignocellulosic material. United States.
Nguyen, Q A. Tue . "Tower reactors for bioconversion of lignocellulosic material". United States.
@article{osti_597113,
title = {Tower reactors for bioconversion of lignocellulosic material},
author = {Nguyen, Q A},
abstractNote = {An apparatus is disclosed for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material. The apparatus consists of a tower bioreactor which has mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {3}
}