Department of Applied Microbiology, Faculty of Applied Sciences, Taiz University, Taiz, Yemen. Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia (UTHM), KM11 Jalan Panchor, Pagoh, 84000, Muar, Johor, Malaysia. Micro-pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia. adel@uthm.edu.my. Micro-pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia.