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Ethanol production from Eucalyptus plantation thinnings.
- Source :
-
Bioresource Technology . Apr2012, Vol. 110, p264-272. 9p. - Publication Year :
- 2012
-
Abstract
- Conditions for optimal pretreatment of eucalypt ( Eucalyptus dunnii ) and spotted gum ( Corymbia citriodora ) forestry thinning residues for bioethanol production were empirically determined using a 3 3 factorial design. Up to 161 mg/g xylose (93% theoretical) was achieved at moderate combined severity factors (CSF) of 1.0–1.6. At CSF > 2.0, xylose levels declined, owing to degradation. Moreover at high CSF, depolymerisation of cellulose was evident and corresponded to glucose (155 mg/g, ∼33% cellulose) recovery in prehydrolysate. Likewise, efficient saccharification with Cellic® CTec 2 cellulase correlated well with increasing process severity. The best condition yielded 74% of the theoretical conversion and was attained at the height of severity (CSF of 2.48). Saccharomyces cerevisiae efficiently fermented crude E. dunnii hydrolysate within 30 h, yielding 18 g/L ethanol, representing a glucose to ethanol conversion rate of 0.475 g/g (92%). Based on our findings, eucalyptus forest thinnings represent a potential feedstock option for the emerging Australian biofuel industry. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 110
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 97844522
- Full Text :
- https://doi.org/10.1016/j.biortech.2012.01.114