1. Department of Chemical Engineering, University of Salamanca, Plz. Caídos 1-5, 37008 Salamanca, Spain
2. TECNUN Engineering School, University of Navarra, Manuel Lardizabal Ibilbidea 13, 20018 San Sebastián, Spain
3. MIRAT Fertilizantes SLU, Av. Aldehuela 10, 37003 Salamanca, Spain