Wiebren de Jong is an associate professor at Delft University of Technology working in the Process & Energy department. He is involved as senior researcher in several EU and national projects concerning biomass pretreatment, combustion, gasification and biorefinery processes. He is co-author of more than 65 journal papers concerning thermal and chemical conversion of biomass. J. Ruud van Ommen is an associate professor at Delft University of Technology working in the Chemical Engineering department. His current research focuses on Scaling up of nanotechnology processes, and monitoring and structuring of catalytic multiphase reactors, especially for energy related processes. He is co-author of more than 80 journal papers, of which about 25 concerning energy technology.