1. Department
of Chemical Engineering, Universidade Federal do Rio Grande do Sul, Porto
Alegre, Rio Grande do Sul 90040-040, Brazil
2. Faculty
of Science and Technology, University of Twente, Meander/ME, 7500 AE Enschede, The Netherlands
3. Environment
and
Water Directorate, Ministry of Science and Technology, Baghdad, Iraq
4. Department
of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States