1. Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, United Kingdom
2. Shanghai Shaanxi Coal Hi-tech Research Institute Co., Ltd., Shanghai 201613, China
3. Department of Molecular Biosciences and Bioengineering, University of Hawai’i at Ma̅noa, Honolulu 96822, Hawaii, United States
4. The Lyell Centre, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
5. Department of Civil and Environmental Engineering, University of Michigan, 1351 Beal Avenue, 107 EWRE Building, Ann Arbor 48109, Michigan, United States
6. Joint BioEnergy Institute, Emeryville, California 94608, United States
7. Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States