1. Faculty of Engineering, Universidad Cooperativa de Colombia, Carrera. 73 #2a-80, Cali, Colombia
2. Study and Control of Environmental Pollution - ECCA Research Group, Faculty of Engineering, Universidad de Valle, A.A. 25360, Cali, Colombia
3. Faculty of Engineering, Universidad Cooperativa de Colombia, Calle 50 A N° 41-27 Bloque 17, Medellín, Colombia
4. University of Southampton, Southampton SO17 1BJ, UK