Spruce bark biorefinery

Katariina Kemppainen, T. Niemelä, J. Inkinen, Jaana Uusitalo, Sakari Kaijaluoto, Lotta Sorsamäki, O. Aaltonen, Anna Suurnäkki, S. Peltonen, Hannu Mikkonen, Vidar Grönberg, Kristiina Kruus, Tiina Nakari-Setälä, Matti Siika-aho

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

Abstract

Norway spruce Picea abies is a key raw material for the forest industry in the Nordic countries. In order to improve the competitiveness of the forest industry by valorising residues and creating value from new products, we have studied the upgrading of spruce bark into transport fuels and chemicals. Different fractionation, pretreatment and enzymatic steps were carried out for industrial spruce bark to solubilize condensed tannin, purify the tannin extract, and to hydrolyse and ferment bark carbohydrates. Extracts containing over 50% of tannin were produced showing the potential of spruce bark as a promising source of renewable polyphenolic compounds. Steam explosion increased the hydrolysability of spruce bark polysaccharides as expected, but it was found that unpressurized hot water treatment alone, conducted for the extraction of tannin, may be sufficient in rendering bark amenable for enzymatic hydrolysis. The hydrolysed C6 sugars could be fermented efficiently to ethanol even in 15% solids content suggesting that no harmful inhibitors were released or produced in the process. Based on our results spruce bark is a promising feedstock for a multi­product forest biorefinery.
Original languageEnglish
Title of host publicationProceedings of the 21st European Biomass Conference
Pages540-543
DOIs
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event21st European Biomass Conference and Exhibition, EUBCE 2013 - Copenhage, Denmark
Duration: 3 Jun 20137 Jun 2013
Conference number: 21

Conference

Conference21st European Biomass Conference and Exhibition, EUBCE 2013
CountryDenmark
CityCopenhage
Period3/06/137/06/13

Fingerprint

biorefining
Picea
bark
tannins
forest industries
Picea abies
hot water treatment
explosions
new products
extracts
rendering
Scandinavia
enzymatic hydrolysis
feedstocks
proanthocyanidins
steam
raw materials
polyphenols
fractionation
polysaccharides

Keywords

  • spruce bark
  • tannins
  • extraction
  • enzymatic hydrolysis
  • ethanol

Cite this

Kemppainen, K., Niemelä, T., Inkinen, J., Uusitalo, J., Kaijaluoto, S., Sorsamäki, L., ... Siika-aho, M. (2013). Spruce bark biorefinery. In Proceedings of the 21st European Biomass Conference (pp. 540-543) https://doi.org/10.5071/21stEUBCE2013-2CO.2.3
Kemppainen, Katariina ; Niemelä, T. ; Inkinen, J. ; Uusitalo, Jaana ; Kaijaluoto, Sakari ; Sorsamäki, Lotta ; Aaltonen, O. ; Suurnäkki, Anna ; Peltonen, S. ; Mikkonen, Hannu ; Grönberg, Vidar ; Kruus, Kristiina ; Nakari-Setälä, Tiina ; Siika-aho, Matti. / Spruce bark biorefinery. Proceedings of the 21st European Biomass Conference. 2013. pp. 540-543
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title = "Spruce bark biorefinery",
abstract = "Norway spruce Picea abies is a key raw material for the forest industry in the Nordic countries. In order to improve the competitiveness of the forest industry by valorising residues and creating value from new products, we have studied the upgrading of spruce bark into transport fuels and chemicals. Different fractionation, pretreatment and enzymatic steps were carried out for industrial spruce bark to solubilize condensed tannin, purify the tannin extract, and to hydrolyse and ferment bark carbohydrates. Extracts containing over 50{\%} of tannin were produced showing the potential of spruce bark as a promising source of renewable polyphenolic compounds. Steam explosion increased the hydrolysability of spruce bark polysaccharides as expected, but it was found that unpressurized hot water treatment alone, conducted for the extraction of tannin, may be sufficient in rendering bark amenable for enzymatic hydrolysis. The hydrolysed C6 sugars could be fermented efficiently to ethanol even in 15{\%} solids content suggesting that no harmful inhibitors were released or produced in the process. Based on our results spruce bark is a promising feedstock for a multi­product forest biorefinery.",
keywords = "spruce bark, tannins, extraction, enzymatic hydrolysis, ethanol",
author = "Katariina Kemppainen and T. Niemel{\"a} and J. Inkinen and Jaana Uusitalo and Sakari Kaijaluoto and Lotta Sorsam{\"a}ki and O. Aaltonen and Anna Suurn{\"a}kki and S. Peltonen and Hannu Mikkonen and Vidar Gr{\"o}nberg and Kristiina Kruus and Tiina Nakari-Set{\"a}l{\"a} and Matti Siika-aho",
year = "2013",
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Kemppainen, K, Niemelä, T, Inkinen, J, Uusitalo, J, Kaijaluoto, S, Sorsamäki, L, Aaltonen, O, Suurnäkki, A, Peltonen, S, Mikkonen, H, Grönberg, V, Kruus, K, Nakari-Setälä, T & Siika-aho, M 2013, Spruce bark biorefinery. in Proceedings of the 21st European Biomass Conference. pp. 540-543, 21st European Biomass Conference and Exhibition, EUBCE 2013, Copenhage, Denmark, 3/06/13. https://doi.org/10.5071/21stEUBCE2013-2CO.2.3

Spruce bark biorefinery. / Kemppainen, Katariina; Niemelä, T.; Inkinen, J.; Uusitalo, Jaana; Kaijaluoto, Sakari; Sorsamäki, Lotta; Aaltonen, O.; Suurnäkki, Anna; Peltonen, S.; Mikkonen, Hannu; Grönberg, Vidar; Kruus, Kristiina; Nakari-Setälä, Tiina; Siika-aho, Matti.

Proceedings of the 21st European Biomass Conference. 2013. p. 540-543.

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

TY - GEN

T1 - Spruce bark biorefinery

AU - Kemppainen, Katariina

AU - Niemelä, T.

AU - Inkinen, J.

AU - Uusitalo, Jaana

AU - Kaijaluoto, Sakari

AU - Sorsamäki, Lotta

AU - Aaltonen, O.

AU - Suurnäkki, Anna

AU - Peltonen, S.

AU - Mikkonen, Hannu

AU - Grönberg, Vidar

AU - Kruus, Kristiina

AU - Nakari-Setälä, Tiina

AU - Siika-aho, Matti

PY - 2013

Y1 - 2013

N2 - Norway spruce Picea abies is a key raw material for the forest industry in the Nordic countries. In order to improve the competitiveness of the forest industry by valorising residues and creating value from new products, we have studied the upgrading of spruce bark into transport fuels and chemicals. Different fractionation, pretreatment and enzymatic steps were carried out for industrial spruce bark to solubilize condensed tannin, purify the tannin extract, and to hydrolyse and ferment bark carbohydrates. Extracts containing over 50% of tannin were produced showing the potential of spruce bark as a promising source of renewable polyphenolic compounds. Steam explosion increased the hydrolysability of spruce bark polysaccharides as expected, but it was found that unpressurized hot water treatment alone, conducted for the extraction of tannin, may be sufficient in rendering bark amenable for enzymatic hydrolysis. The hydrolysed C6 sugars could be fermented efficiently to ethanol even in 15% solids content suggesting that no harmful inhibitors were released or produced in the process. Based on our results spruce bark is a promising feedstock for a multi­product forest biorefinery.

AB - Norway spruce Picea abies is a key raw material for the forest industry in the Nordic countries. In order to improve the competitiveness of the forest industry by valorising residues and creating value from new products, we have studied the upgrading of spruce bark into transport fuels and chemicals. Different fractionation, pretreatment and enzymatic steps were carried out for industrial spruce bark to solubilize condensed tannin, purify the tannin extract, and to hydrolyse and ferment bark carbohydrates. Extracts containing over 50% of tannin were produced showing the potential of spruce bark as a promising source of renewable polyphenolic compounds. Steam explosion increased the hydrolysability of spruce bark polysaccharides as expected, but it was found that unpressurized hot water treatment alone, conducted for the extraction of tannin, may be sufficient in rendering bark amenable for enzymatic hydrolysis. The hydrolysed C6 sugars could be fermented efficiently to ethanol even in 15% solids content suggesting that no harmful inhibitors were released or produced in the process. Based on our results spruce bark is a promising feedstock for a multi­product forest biorefinery.

KW - spruce bark

KW - tannins

KW - extraction

KW - enzymatic hydrolysis

KW - ethanol

U2 - 10.5071/21stEUBCE2013-2CO.2.3

DO - 10.5071/21stEUBCE2013-2CO.2.3

M3 - Conference article in proceedings

SN - 978-88-89407-530

SP - 540

EP - 543

BT - Proceedings of the 21st European Biomass Conference

ER -

Kemppainen K, Niemelä T, Inkinen J, Uusitalo J, Kaijaluoto S, Sorsamäki L et al. Spruce bark biorefinery. In Proceedings of the 21st European Biomass Conference. 2013. p. 540-543 https://doi.org/10.5071/21stEUBCE2013-2CO.2.3