1. National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401-3393, United States
2. Chemistry and Nanoscience Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401-3393, United States
3. Renewable Energy Consortium for Research and Demonstration − RE-CORD, Viale Kennedy 184, 50038 Scarperia, Florence Italy
4. CREAR/DIEF, University of Florence, Department of Industrial Engineering, Viale Morgagni 40/44, Florence 50139, Italy