1. Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, China
2. Department of Geology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
3. Center for Environmental Biotechnology, University of Tennessee, Knoxville, Tennessee, USA
4. Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, Tennessee, USA
5. Department of Civil Engineering, Environmental Engineering Program, Auburn University, Auburn, Alabama, USA
6. Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA
7. Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, Tennessee, USA
8. Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, Tennessee, USA