Mohammad J. Taherzadeh is a research leader at the Swedish Centre for Resource Recovery, University of Borås, where he is working on waste biorefinery for converting wastes and residuals to ethanol, biogas, animal feed, and biopolymers and focusing on fermentation development using bacteria, yeast, and filamentous fungi. He is also the main supervisor of more than 10 Ph.D students and several postdoctoral fellows. Professor Taherzadeh holds a Ph.D in bioscience and an M.Sc in chemical engineering. He has been a professor of bioprocess technology since 2004. He has to his credit more than 170 publications in peer-reviewed science journals, 12 book chapters, and 3 patents. Professor Taherzadeh collaborates with several companies, and some of his research results have been industrialized. More information about him is available at www.adm.hb.se/~mjt/. Tobias Richards has been a professor in energy recovery since 2010 at the Swedish Centre for Resource Recovery, University of Borås. He is the leader for the group working on combustion and thermal treatment. Professor Richards’ focus area is treatment by thermal processes of different materials, especially mixed materials such as waste. His aim is to get valuable products like electricity, heat, synthesis gas, and pyrolysis oil, and when necessary, destroy potential harmful substances. Professor Richards has to his credit 30 peer-reviewed and published articles and 2 book chapters and is currently supervising 5 Ph.D students.