1. RISE Energy Technology Center AB, Division of Bioeconomy, RISE Research Institutes of Sweden,
Box 726, SE-941 28 Piteå, Sweden
2. Division of Energy Science, Luleå University of Technlogy, SE-971 87 Luleå, Sweden
3. Department of Combustion and Thermal Energy, University of Miskolc, Miskolc-Egyetemvaros H3515, Hungary