1. Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, China
2. Key Laboratory of Coal Bed Methane Resource and Reservicing Process of the Ministry of Education, School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, China
3. School of Environmental and Civil Engineering, Jiang Nan University, Wuxi, China
4. Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
5. Department of Civil and Architectural Engineering, University of Wyoming, Laramie, WY, USA