Monosaccharide production from lignocellulosic biomasses via concentrated acid hydrolysis

Jari Heinonen, Anu Tamminen, Jaana Uusitalo, Tuomo Sainio

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional

Abstract

Monosaccharides are valuable and versatile platform chemicals that can be obtained by hydrolyzing cellulose and hemicelluloses in lignocellulosic biomasses [1, 2, 3]. Hydrolysis with concentrated sulfuric acid as catalyst leads to 80% or higher monosaccharide yield. Only a low amount of by-products is formed [2, 3]. The hydrolysis acid must be removed prior to downstream processing of monosaccharides. Traditionally neutralization with Ca(OH)2 has been used. This results in high chemical consumption and generation of waste gypsum. In addition, fresh sulfuric acid is needed for every hydrolysis [2, 3]. In order to lower the chemical costs of the concentrated acid hydrolysis process, the hydrolysis acid should be recycled. This can be accomplished by using chromatography: the hydrolysates are fractionated into sulfuric acid fraction, monosaccharide fraction, and by-product fractions [2]. In this work, batchwise chromatographic fractionation of wood based concentrated acid lignocellulosic hydrolysates was studied. Effectiveness of the chromatographic purification was evaluated by investigating ethanol production from the purified monosaccharide solutions using S. cerevisiae.
Original languageEnglish
Title of host publicationNWBC 2012
Subtitle of host publicationThe 4th Nordic Wood Biorefinery Conference
EditorsKlaus Niemelä
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages273-274
ISBN (Electronic)978-951-38-7881-8
ISBN (Print)978-951-38-7880-1
Publication statusPublished - 2012
MoE publication typeD3 Professional conference proceedings
Event4th Nordic Wood Biorefinery Conference, NWBC 2012 - Helsinki, Finland
Duration: 23 Oct 201225 Oct 2012
https://www.vtt.fi/inf/pdf/technology/2012/T53.pdf (Full proceedings)

Publication series

SeriesVTT Technology
Number53
ISSN2242-1211

Conference

Conference4th Nordic Wood Biorefinery Conference, NWBC 2012
Abbreviated titleNWBC 2012
CountryFinland
CityHelsinki
Period23/10/1225/10/12
Internet address

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Cite this

Heinonen, J., Tamminen, A., Uusitalo, J., & Sainio, T. (2012). Monosaccharide production from lignocellulosic biomasses via concentrated acid hydrolysis. In K. Niemelä (Ed.), NWBC 2012: The 4th Nordic Wood Biorefinery Conference (pp. 273-274). VTT Technical Research Centre of Finland. VTT Technology, No. 53 http://www.vtt.fi/inf/pdf/technology/2012/T53.pdf