Journal article
Pilot-scale cellulosic ethanol production using eucalyptus biomass pre-treated by dilute acid and steam explosion
Biofuels, Bioproducts and Biorefining, Vol.10(4), pp.346-358
01/07/2016
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Source: InCites
Abstract
The widespread deployment of commercial-scale cellulosic ethanol currently hinges on developing and evaluating scalable processes whilst broadening feedstock options. This study investigates whole Eucalyptus grandis trees as a potential feedstock and demonstrates dilute acid pre-treatment (with steam explosion) followed by pre-saccharification simultaneous saccharification fermentation process (PSSF) as a suitable, scalable strategy for the production of bioethanol. Biomass was pre-treated in dilute H2SO4 at laboratory scale (0.1 kg) and pilot scale (10 kg) to evaluate the effect of combined severity factor (CSF) on pre-treatment effectiveness. Subsequently, pilot-scale pre-treated residues (15 wt.%) were converted to ethanol in a PSSF process at 2 L and 300 L scales. Good polynomial correlations (n = 2) of CSF with hemicellulose removal and glucan digestibility with a minimum R-2 of 0.91 were recorded. The laboratory-scale 72 h glucan digestibility and glucose yield was 68.0% and 51.3%, respectively, from biomass pre-treated at 190 degrees C /15 min/ 4.8 wt.% H2SO4. Pilot-scale pre-treatment (180 degrees C/ 15 min/2.4 wt.% H2SO4 followed by steam explosion) delivered higher glucan digestibility (71.8%) and glucose yield (63.6%). However, the ethanol yields using PSSF were calculated at 82.5 and 113 kg/ton of dry biomass for the pilot and the laboratory scales, respectively. (c) 2016 Society of Chemical Industry and John Wiley & Sons, Ltd
Details
- Title
- Pilot-scale cellulosic ethanol production using eucalyptus biomass pre-treated by dilute acid and steam explosion
- Creators
- Shane McIntosh - NSW Department of Primary Industries, WollongbarZhanying Zhang - Queensland University of TechnologyJanice Palmer - Wollongbar Primary Ind Inst, Wollongbar, NSW, AustraliaHeng-Ho Wong - Queensland University of TechnologyTony Vancov - Wollongbar Primary Ind Inst, Wollongbar, NSW, AustraliaWilliam Doherty - Queensland University of Technology
- Publication Details
- Biofuels, Bioproducts and Biorefining, Vol.10(4), pp.346-358
- Publisher
- John Wiley & Sons Ltd.
- Number of pages
- 13
- Identifiers
- 991013015698702368
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article