About the project

In this project we investigate possibilities to produce drop-in biofuels from a partial stream of the total black liquor (BL) in kraft pulp mills. Focus is on petrol components, which today has fewer options than renewable diesel, and can thus contribute to the transport system transition on relatively short term and within the reduction obligation system.

Different technology tracks are studied based on lignin liquefaction/hydrotreatment, and BL gasification/synthesis via methanol-to-gasoline. By using only a share of all BL, pulp mills with limited recovery capacity can increase the pulp production. We evaluate both the biofuel production (costs, greenhouse gases (GHG), production potential, technology maturity) and effects on the pulp production from debottlenecking the recovery boiler. Favourable results may increase the drivers for investment in pulp mill integrated production of biofuels with high GHG performance.

The project involves participants from both pulp and refinery industry.


Elisabeth Wetterlund, Bio4Energy (LTU)


Yawer Jafri and Fredrik Granberg, Bio4Energy (LTU) // Erik Furusjö, Johanna Mossberg and Karin Lindgren, RISE // Christian Hulteberg, SunCarbon AB // Klaas va der Vlist and Bo Johansson, Smurfit Kappa Kraftliner // Henrik Rådberg, Preem // Henric Dennergård, Södra

Time plan
September 2018 - June 2020

Total project cost
2 034 427 SEK

Swedish Energy Agency, the f3 partners, Bio4Energy (LTU), Preem AB, Smurfit Kappa, SunCarbon and Södra skogsägarna ekonomisk förening

Swedish Energy Agency's project number within the collaborative research program