Change search
ReferencesLink to record
Permanent link

Direct link
Cold alkaline extraction as a pretreatment for bioethanol production from eucalyptus, sugarcane bagasse and sugarcane straw
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
2016 (English)In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 124, 315-324 p.Article in journal (Refereed) Published
Abstract [en]

Optimal conditions for the cold alkaline extraction (CAE) pretreatment of eucalyptus, sugarcane bagasse and sugarcane straw are proposed in view of their subsequent bioconversion into ethanol through the semi -simultaneous saccharification and fermentation (SSSF) process (with presaccharification followed by simultaneous saccharification and fermentation, or SSF). The optimum conditions, which are identified based on an experiment with a factorial central composite design, resulted in the removal of 46%, 52% and 61% of the xylan and 15%, 37% and 45% of the lignin for eucalyptus, bagasse and straw, respectively. The formation of pseudo-extractives was observed during the CAE of eucalyptus. Despite the similar glucose concentration and yield for all biomasses after 12 h of presaccharification, the highest yield (0.065 g(ethanol)/g(biomass)), concentrations (5.74 g L-1) and volumetric productivity for ethanol (0.57 g L-1 h(-1)) were observed for the sugarcane straw. This finding was most likely related to the improved accessibility of cellulose that resulted from the removal of the largest amount of xylan and lignin.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 124, 315-324 p.
Keyword [en]
Factorial experimental central composite design, Presaccharification, Pseudo-extractives, Saccharomyces cerevisiae yeast, Semi-simultaneous saccharification and fermentation, Trichoderma reesei cellulase
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-193395DOI: 10.1016/j.enconman.2016.07.029ISI: 000382794100029ScopusID: 2-s2.0-84978542849OAI: diva2:1037208
Knut and Alice Wallenberg Foundation

QC 20161014

Available from: 2016-10-14 Created: 2016-10-03 Last updated: 2016-10-14Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Sevastyanova, Olena
By organisation
Fibre and Polymer TechnologyWallenberg Wood Science Center
In the same journal
Energy Conversion and Management
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

ReferencesLink to record
Permanent link

Direct link