1. Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551, Singapore
2. School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
3. Department of Civil and Environmental Engineering, One Shields Avenue, University of California, Davis, California 95616, United States
4. Centre for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, DK-9220, Aalborg, Denmark
5. Singapore Centre for Environmental Life Sciences Engineering, National University of Singapore, Singapore 119077, Singapore
6. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore