1. Chemical Engineering Department, CIEPQPF, University of Coimbra, Pólo II, Rua Sílvio Lima, Coimbra 3030-790, Portugal
2. Aqua+Tech Specialities SA, Chemin du Chalet-du-Bac 4, Avully, Geneva 1237, Switzerland
3. School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom