1. Department of Chemical Engineering, Mariano Marcos State University, Batac City, Philippines
2. School of Graduate Studies, Mapua University, Manila, Philippines
3. School of Chemical, Biological, and Materials Engineering and Sciences, Mapua University, Manila, Philippines
4. Chemical Engineering Department, De La Salle University, Malate, Manila, Philippines
5. Department of Environmental Engineering, National Chung Hsing University, Taichung 40227, Taiwan