1 School of Energy & Environmental Engineering, Hebei University of Technology, China. Electronic address: 2020017@hebut.edu.cn.
2 School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology, Sydney, Australia. Electronic address: h.ngo@uts.edu.au.
3 School of Environmental Science & Engineering, Beijing University of Technology, Beijing, China. Electronic address: pyz@bjut.edu.cn.
4 Institute for Water and Wastewater Technology, South Africa. Electronic address: faizalb@dut.ac.za.
5 Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali Università di Palermo, Viale delle Scienze, Ed. 8, 90128 Palermo, Italy. Electronic address: giorgio.mannina@unipa.it.