1. Department of Chemical Engineering, Faculty of Engineering, Universitas Sriwijaya, Indralaya 30662 Sumatra Selatan, Indonesia
2. Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
3. Department of Environmental Science, Faculty of Science and Natural Resources, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah Malaysia
4. Geography Department, Faculty of Arts and Humanities, Tartous University, Tartous, Syria
5. Department of Geography, College of Arabic Language and Social Studies, Qassim University, Buraydah 51452, Saudi Arabia