1. School of Chemical
and Biomedical Engineering, Nanyang Technological University, 70 Nanyang
Drive, Singapore 637457
2. Nanyang Environment
and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, Singapore 637141
3. School of Civil and
Environmental Engineering, Nanyang Technological University, 50 Nanyang
Avenue, Singapore 639798