The project team

Project leader

Anna Karlsson, R&D Project Manager

Anna Karlsson has a PhD in Water and Environmental studies from Linköping University. Her thesis focused on anaerobic degradation of phenolic compounds in landfill environments. She has since 15 years been working with microbial research and development related to biogas production, first as a researcher at Linköping university and from 2011 as employed at Scandinavian Biogas Fuels AB.


Parts of the her current work is focused on additions of trace elements as a means to improve process stability and loading capacities in the anaerobic digestion process. Anna has also been one of the leaders of a resent project exploring the biogas potential in waste streams from the Swedish pulp and paper industry. During the EffiSludge project period, Anna was coordinationg the reference group activities, data processign and evaluation.

Project team

The project was formally closed with December 2021. For information please contact the Anna Karlsson, Project leader.

Jörgen Ejlertsson, Process manager

Jörgen is Process, Research and Development Director at Scandinavian Biogas Fuels AB. He has a long experience on process optimisation for high organic loading digester (HOLD), co-digestion and pre-treatments applied to different substrates.

Anders Bergvatten, Design manager

Anders is Senior Process Manager at Scandinavian Biogas Fuels AB. His responsibilities are to support Scandinavian Biogas’s production plants in process-related tasks and to work on the design of new plants.

Ida Andersson, Lab technician

Ida is Senior Lab Technician at Scandinavian Biogas Fuels AB. Her responsibilities are to perform analitical work at Scandinavian Biogas' Research and Development laboratory in Linköping.

Francesco Ometto, Project manager

Francesco is Research and Development Manager at Scandinavian Biogas Fuels AB (until August 2022) with expertise on substrates evaluation for biogas production. During the EffiSludge project period, Francesco acted as Project Manager.

Jon Henrik Steinsli, WWT plant manager

Jon Henrik is Assistant line manager Pulp and Energy at Norske Skog Skogn. His responsibilities include process performance evaluation of the wastetater treatment plant.

Nina Hole Saetran, Process engineer

Nina Hole is Process Engineer at Norske Skog Skogn. Her responsabilities include monitoring of the wastewater treatment plant and process sustainability evaluation.

Terje Hylmo, Project leader

Terje is Senior Project Manager at Biokraft. His responsibilities include project supervision and substrate supply chain evaluation.

Pål Nygård, Biogas plant manager

Pål is Site Manager at Biokraft. His responsabilities include process performance evaluation and planning of onsite activities.

Reference group

The reference group acted as an external monitoring team of experts discussing the goals achieved step by step during the project, from the construction/reconstruction of the activated sludge treatment and biogas plant to the evaluation of the obtained results against the set targets. The group gaveadvices and suggested improvements.

Frank Scholwin, Institut für Biogas, Germany

Frank Scholwin is an environmental engineer who obtained his doctorate in biological waste treatment at Bauhaus University in Weimar. Between 2003 and 2012 he conducted and coordinated biogas research and consulting activities targeting at optimization of biogas and biomethane production at the German center for bioenergy research. Since 2008 he is Honorary Professor of Biogas/Bioenergy at the University of Rostock. In 2012 je founded his own ‘Institute for Biogas, Waste Management and Energy’ focusing on innovative solutions for biogas production and use. He is author of a large number of book chapters, conference contributions, and journal articles. He is engaged in the scientific boards of conferences and scientific bodies as well as in the European Biogas Association (EBA).

Dr Annika Björn, Linköping University, Sweden

Annika Björn is an assistant professor at the Department of Thematic Studies – Environmental Change at Linköping University (LiU) and at Biogas Research Center (BRC) hosted by LiU. Her current research focus on optimization of biogas processes, both efficiency and stability, from chemical, microbial and technical point of views. E.g. optimization of nutrient balances, rheology, improved hydrolysis as a mean to increase the overall degradability, pre- and/or post-treatment techniques including establishment of biogas production in the pulp and paper industry.

Fredrik Nilsson, FN Engineering,

Fredrik Nilsson has a Master’s degree in Chemical Engineering from Lund University. He has experience from working as an engineer at a mechanical pulp mill and for the last ten years he has been working as a consultant mainly for projects related to the pulp and paper industry as well as biogas projects. Fredrik has been a valuable link between Linköping University and the pulp and paper industry for the recent projects run at Linköping University developing processes for producing biogas from pulp and paper mill effluents

Magnus Johanson, Fiskeby Board, Sweden

Magnus Johansson, has a Master’s degree in Chemical Engineering from Lund University. Ranging from production and R&D projects, management, to expansion related commitments, Magnus has dedicated his career to the pulp and paper industry. In later years, his work focused on the implementation of strategic energy efficiency systems at Fiskeby, Sweden´s oldest but most vital mill. In particular, he work to maximize performances of the Upflow Anaerobic Sludge Blanket (UASB) reactor in combination with the activated sludge system. Magnus has a strong interest on sustainability. In case of leisure time, he enjoys outdoor activities with his family.