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Novel biorefinery: A residue from wood bioethanol production converted into cellulose nanocrystals
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
2010 (English)In: International Conference on Nanotechnology for the Forest Products Industry 2010: Otaniemi, Espoo, Finland, 27-29 September 2010, Norcross, GA: TAPPI Press, 2010, 1241-1266 p.Conference paper, Published paper (Refereed)
Abstract [en]

The aim of the work was to use an industrial bio-residue as a raw material for the production of cellulose nanocrystals. The used residue, obtained from a bioethanol pilot plant, was purified using chemical extraction and whitening, and separated to nanocrystals by mechanical and chemical treatments such as ultrasonication, high-pressure homogenization and hydrolization. The chemical compositions and characteristics of the bio-residue were studied before and after purification using a TAPPI standard, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The morphology of the isolated nanocrystals was characterized using atomic force microscope (AFM). The chemical composition of the used bio-residue was found to be 49.5 wt-% cellulose, 42.1 wt-% lignin and 8.4 wt-% extractives. The crystallinity of the bio-residue was 14.5% and it increased to more than 73% after the purification process. The AFM study showed that a simple ultrasonication and homogenization processes resulted in nanosized crystals with diameters in the 10-20 nm range.

Place, publisher, year, edition, pages
Norcross, GA: TAPPI Press, 2010. 1241-1266 p.
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-34120Local ID: 83b33b83-8b85-4c7c-8842-fb4fcd86f72fISBN: 9781618390011 (print)OAI: oai:DiVA.org:ltu-34120DiVA: diva2:1007370
Conference
International Conference on Nanotechnology for the Forest Products Industry : 27/09/2010 - 29/09/2010
Note
Godkänd; 2011; 20110927 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-10-19Bibliographically approved

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