1Centre for Environmental Health and Engineering (CEHE), Department of Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom
2Department of Agricultural and Environmental Engineering, School of Engineering Technology, Imo State Polytechnic Umuagwo, P. M. B., 1472, Owerri, Nigeria
3Department of Environmental and Hydraulic Engineering, Polytechnic School, Av. Almeida Prado, 83 – Building, Civil Engineering/PHA - Butanta, 05508-900, University of Sao Paulo, Sao Paulo, SP, Brazil
4Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States