A1 Journal article (refereed)
Valorization potential of technical lignins from Norway spruce (Picea abies) via pyrolysis (2022)

Ghalibaf, M., Alén, R., Hita, I., Deuss, P. J., Heeres, H. J., & de Wild, P. (2022). Valorization potential of technical lignins from Norway spruce (Picea abies) via pyrolysis. Journal of Analytical and Applied Pyrolysis, 165, Article 105549. https://doi.org/10.1016/j.jaap.2022.105549

JYU authors or editors

Publication details

All authors or editors: Ghalibaf, Maryam; Alén, Raimo; Hita, Idoia; Deuss, Peter J.; Heeres, Hero Jan; de Wild, Paul

Journal or series: Journal of Analytical and Applied Pyrolysis

ISSN: 0165-2370

eISSN: 1873-250X

Publication year: 2022

Publication date: 14/05/2022

Volume: 165

Article number: 105549

Publisher: Elsevier BV

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.jaap.2022.105549

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82470

Abstract

Analytical pyrolysis (Py-GC/MS) on mg-scale of Norway spruce (Picea abies)-derived kraft lignin, ethanosolv lignin, and dried lignin-rich soda-anthraquinone (AQ) black liquors was studied at 500 °C to compare the valorization potential of these materials, focusing on the type and yield of condensable pyrolysis products. Of particular interest was the relatively selective formation of guaiacol (2-methoxyphenol) from the dried soda-AQ black liquors in contrast to the formation of complex phenolic product mixtures from the pyrolysis of the kraft and ethanosolv lignins. It was shown that this finding could be attributed to differences in composition and structure as was assessed by various NMR and 2D-GC/FID analyses. From a comparison between the analytical pyrolysis results and the results of Norway spruce-derived pyrolysis oils that were produced in earlier research with a state-of-the-art kg-scale bubbling fluidized bed pyrolysis reactor, it was concluded that analytical pyrolysis is suitable to predict the pyrolysis behavior of lignin also on a larger scale. However, it was found that the prediction of reliable product yields for larger-scale pyrolysis from the semi-quantitative analytical pyrolysis yield results was less accurate, mainly due to differences in process conditions, such as heating rate and hot-vapor-residence times leading to secondary degradation reaction of the individual monomers.

Keywords: phenols; recovery (recapture); biomass (industry); Norway spruce; lignin; pyrolysis oil; black liquor

Free keywords: Norway spruce; lignin; pyrolysis; valorization; phenols

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2022

JUFO rating: 1