1. Engineering Science Department, University of Patras, 26500 Patras, Greece
2. Department of Chemical Engineering, University of Patras, 26500 Patras, Greece
3. Environmental
Engineering and
Science Program, University of Cincinnati, Cincinnati, Ohio 45221-0012, United States
4. FORTH/ICE-HT, P.O.
Box 1414, 26504 Patras, Greece