1. Prof., Dept. of Chemical Engrg., Nat. Taiwan Univ., Taipei 10617, Taiwan.
2. Prof., Dept. of Chemical Engrg., Nat. Taiwan Univ., Taipei 10617, Taiwan (corresponding author). E-mail: djlee@ccms.ntu.edu.tw
3. PhD Student, Grad. Inst. of Envir. Engrg., Nat. Taiwan Univ., Taipei 10617, Taiwan.