1. a Centre for Environmental Sustainability and Water Security, Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia
2. b Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor 81310, Malaysia
3. d Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, Johor Bahru, Johor 81310, Malaysia
4. c Department of Water and Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia
5. e Newcastle University Centre for Water, School of Engineering, Newcastle University, Newcastle upon Tyne, UK
6. f Independent Researcher, Kuala Lumpur, Malaysia