1. Centre for Mechanical Engineering, Materials and Processes, Department of Chemical Engineering, University of Coimbra Rua Sílvio Lima − Polo II, 3030-790 Coimbra, Portugal
2. LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto Rua Dr. Roberto Frias, 4200-465 Porto, Portugal