1. State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
2. Kuang Yaming Honors School, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
3. Ministry of Ecology and Environment, Nanjing Institute of Environmental Science, Nanjing 210042, China
4. Department of Environmental Engineering, College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, P. R. China
5. Center for Geomicrobiology and Biogeochemistry Research, State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China
6. Department of Chemical & Environmental Engineering, University of California, Riverside, California 92521, United States