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Simultaneous Saccharification, Filtration and Fermentation (SSFF) for Lignocellulosic ethanol production
University of Borås, School of Engineering.
University of Borås, School of Engineering.
University of Borås, School of Engineering.ORCID iD: 0000-0003-4887-2433
2013 (English)Conference paper, (Other academic)
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

A novel method of bioethanol production from lignocellulosic biomass “Simultaneous Saccharification Filtration and Fermentation (SSFF)” was developed and examined. SSFF is an integrated process which combines the advantages of both Separate hydrolysis and fermentation (SHF) and Simultaneous saccharification and fermentation (SSF) together. The process involves simultaneous enzymatic hydrolysis of pretreated lignocellulosic material, cross-flow filtration of the enzymatically treated suspension and fermentation of the sugar-rich filtrate with flocculating strain of yeast Saccharomyces cerevisiae as fermenting organism in a continuous process. The individual units of the SSFF integrated process was examined, and compared with SSF for a slurry of 10% SS (suspended solids) of pretreated lignocelluloses. Capacity tests were performed on the fermentation unit as well. Slurries of up to 14% SS could be pumped through the cross-flow filter membrane module without clogging the module. The yeast strain used was able to efficiently consume the glucose from the hydrolysis passed through the filtration effectively. SSFF cultivations resulted in an ethanol yield of 85% of the theoretical yield, and the flocculating yeast was effectively reused for 5 different batches of SSFF. Our new process of SSFF has the potential to be used in industrial lignocellulosic ethanol production.

Place, publisher, year, edition, pages
2013.
Keyword [sv]
Resursåtervinning
National Category
Engineering and Technology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-6994Local ID: 2320/12373OAI: oai:DiVA.org:hb-6994DiVA: diva2:887701
Conference
35th Symposium on Biotechnology for Fuels and Chemicals, USA
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2016-07-13Bibliographically approved

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