1. Research Associate, Dept. of Chemical Engineering, National Tsing Hua Univ., 101 Sec. 2 Kuang-Fu Rd., Hsinchu 30033, Taiwan, ROC.
2. Donald C. Phillips Professor, Dept. of Civil and Environmental Engineering, Univ. of Delaware, Newark, DE 19716 (corresponding author).
3. Research Associate, Institute of Environmental Engineering, National Chiao Tung Univ., 1001 University Rd., Hsinchu 300, Taiwan, ROC.
4. Chaired Professor, Dept. of Chemical Engineering, National Tsing Hua Univ., 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC.
5. Distinguished Professor, Institute of Environmental Engineering, National Chiao Tung Univ., 1001 University Rd., Hsinchu 300, Taiwan, ROC.