Application of steel industry slags as novel cost efficient catalysts in catalytic fast pyrolysis of biomass

J. Lehtonen*, T. Ohra-Aho, C. Lindfors, E. Kholkina, N. Kumar, Dmitry Murzin, A. Oasmaa

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedingConference contributionScientific


Slags from metallurgical industry are cost efficient alternatives for acidic zeolites in catalytic fast pyrolysis. A slag from steel industry was studied for catalytic fast pyrolysis of pine sawdust. The desulfurization slag from a blast furnace steel mill was modified to improve its catalytic properties by using alkaline pretreatments and hydrothermal syntheses. As a result, specific surface area of the material could be increased. Modified desulfurization slags were tested using analytical pyrolysis and bench scale bubbling fluidized bed pyrolyser. Results of analytical pyrolysis indicate that slags are able to modify product distribution. Based on these results, the best modified slag was chosen for bench scale pyrolysis tests. In the bench scale run, the use of modified slag led to oxygenated bio oil compared to fast pyrolysis with sand. However, bio oil yield decreased simultaneously as typically in catalytic fast pyrolysis.

Original languageEnglish
Title of host publicationProceedings of the 26th European Biomass Conference and Exhibition
PublisherETA-Florence Renewable Energies
Number of pages5
ISBN (Print)978-88-89407-18-9
Publication statusPublished - 1 May 2018
MoE publication typeB3 Non-refereed article in conference proceedings
Event26th European Biomass Conference and Exhibition, EUBCE 2018 - Copenhagen, Denmark
Duration: 14 May 201817 May 2018

Publication series

NameEuropean Biomass Conference and Exhibition Proceedings


Conference26th European Biomass Conference and Exhibition, EUBCE 2018
Abbreviated titleEUBCE 2018


  • Catalyst
  • Fast pyrolysis
  • Liquefaction
  • Thermochemical conversion


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