1. Division of Environmental Engineering; Faculty of Engineering; Hokkaido University; North-13, West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
2. Department of Civil Engineering; Nagaoka National College of Technology; 888 Nishikatakaimachi Nagaoka Niigata 940-0834 Japan
3. Department of Civil and Environmental Engineering; Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama, Higashihiroshima Hiroshima 739-8527 Japan
4. Department of Applied Biological Chemistry; Graduate School of Agricultural and Life Science; The University of Tokyo; 1-1-1 Yayoi, Bunkyo-ku Tokyo 113-8657 Japan
5. Biomass Refinery Research Center; National Institute of Advanced Industrial Science and Technology; 3-11-32, Kagamiyama, Higashihiroshima Hiroshima 739-0046 Japan
6. Department of Applied Life Science; Faculty of Biotechnology and Life Science; Sojo University; 4-22-1 Ikeda Kumamoto 860-0082 Japan