Pilot scale conversion of wheat straw to ethanol via simultaneous saccharification and fermentation.
Bioresour Technol
; 175: 17-22, 2015 Jan.
Article
in En
| MEDLINE
| ID: mdl-25459799
ABSTRACT
The production of ethanol from wheat straw (WS) by dilute acid pretreatment, bioabatement of fermentation inhibitors by a fungal strain, and simultaneous saccharification and fermentation (SSF) of the bio-abated WS to ethanol using an ethanologenic recombinant bacterium was studied at a pilot scale without sterilization. WS (124.2g/L) was pretreated with dilute H2SO4 in two parallel tube reactors at 160°C. The inhibitors were bio-abated by growing the fungus aerobically. The maximum ethanol produced by SSF of the bio-abated WS by the recombinant Escherichia coli FBR5 at pH 6.0 and 35°C was 36.0g/L in 83h with a productivity of 0.43gL(-1)h(-1). This value corresponds to an ethanol yield of 0.29g/g of WS which is 86% of the theoretical ethanol yield from WS. This is the first report on the production of ethanol by the recombinant bacterium from a lignocellulosic biomass at a pilot scale.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Triticum
/
Bioreactors
/
Ethanol
/
Escherichia coli
/
Fermentation
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2015
Document type:
Article