1. Chemical Engineering, DONG Energy Power A/S, Nesa Alle 1, DK-2820, Gentofte, Denmark
2. Biosystems Department, Risø National Laboratory for Sustainable Energy, Technical University of Denmark-DTU, Frederiksborgvej 399, DK-4000, Roskilde, Denmark
3. IMFUFA-Department of Science, Systems and Models, University of Roskilde, DK-4000, Roskilde, Denmark