Journal article
Pretreatment as the crucial step for a cellulosic ethanol biorefinery: Testing the efficiency of wet explosion on different types of biomass
Bioresource technology, Vol.124, pp.105-110
11/2012
Handle:
https://hdl.handle.net/2376/109838
PMID: 22989639
Abstract
[Display omitted]
► Modified wet explosion pretreatment was applied to lignocellulosic biomass samples. ► The efficiency of the pretreatment and enzymatic hydrolysis was investigated. ► The pretreatment efficiency for biomass of different composition was identified. ► Two biomass samples showed a potential of around 300L bioethanol/ton-DM.
The efficiency of wet explosion applied as modified dilute acid pretreatment at previously identified reference conditions (150°C, 0.3% H2SO4, 15min) was investigated on lucerne, ryegrass, fescue grass, cocksfoot grass, rye fescue, forage grass, and wheat straw in order to identify their potential as feedstock for cellulosic bioethanol production.
After pretreatment, cellulose recovery was more than 95% for all biomass while enzymatic convertibility of cellulose ranged from 40% to 80%. Lower enzymatic conversion of cellulose was correlated with higher lignin content of the biomass. Hemicellulose recovery was 81–91% with a final pentose yield of 65–85%. Cocksfoot grass and wheat straw had the highest bioethanol potential of 292 and 308L/ton DM, respectively. Overall efficiencies were higher than 68% for cocksfoot grass harvested in August, fescue grass, wheat straw, and forage grass while efficiencies were lower than 61% for the other tested biomass resources, making further adjustment of the process parameters necessary.
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Details
- Title
- Pretreatment as the crucial step for a cellulosic ethanol biorefinery: Testing the efficiency of wet explosion on different types of biomass
- Creators
- S.I Njoku - Section for Sustainable Biotechnology, Aalborg University Copenhagen, A.C. Meyers Vænge 15, 2450 Copenhagen SV, DenmarkB.K Ahring - Section for Sustainable Biotechnology, Aalborg University Copenhagen, A.C. Meyers Vænge 15, 2450 Copenhagen SV, DenmarkH Uellendahl - Section for Sustainable Biotechnology, Aalborg University Copenhagen, A.C. Meyers Vænge 15, 2450 Copenhagen SV, Denmark
- Publication Details
- Bioresource technology, Vol.124, pp.105-110
- Academic Unit
- Chemical Engineering and Bioengineering, School of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547294701842
- Language
- English
- Resource Type
- Journal article