Comparison of pyrolyzed lignin before and after milled wood lignin purification of Norway spruce with increasing steam explosion

  • Ida AarumEmail author
  • Anders Solli
  • Hördur Gunnarsson
  • Dayanand Kalyani
  • Hanne Devle
  • Dag Ekeberg
  • Yngve Stenstrøm


Increasing energy and chemical needs have to be covered by renewable resources, such as biomass, in the near future. Steam explosion is a green pretreatment for utilizing biomass, but it produces a by-product, pseudo-lignin. By comparing milled wood lignin purified and unpurified samples after steam explosion with pyrolysis–GC–MS, the components of pseudo-lignin should be evident. 2D NMR HSQC was also conducted on the purified samples, in addition to compositional analysis after steam explosion. After steam explosion, there is about 6 wt% of pseudo-lignin, and the pyrolysis shows an increase in diol benzenes and furan components in the unpurified samples, which is associated with pseudo-lignin.



This research was supported by the Research Council of Norway Project No. 243950 (Biocatalytic utilization of lignin for increased biogas production in a biorefinery setting).

Supplementary material

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Supplementary material 1 (PDF 487 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Faculty of Chemistry, Biotechnology and Food ScienceNorwegian University of Life SciencesÅsNorway

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