CERTEC, Dept. Chemical Engineering, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647. 08028 Barcelona, Catalonia, Spain Facultad de Ingeniería, Pontificia Universidad Javeriana (PUJ) Calle 18, 118-250, Cali, Colombia Aquatic systems research unit, Environmental Science Center EULA-Chile, University of Concepción, Concepción, Chile Dep. of Chemistry, Universidad del Valle, Cali, Colomb...