1. School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, P. R. China
2. Ministry of Education Key Laboratory of Ecology and Resources Use of the Mongolian Plateau, Inner Mongolia University, Hohhot, China
3. School of Ecology and Environment, Inner Mongolia University, Hohhot, China
4. School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, P. R. China
5. Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-coal Chemical Industry, School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, China
6. Laboratory of Low Rank Coal Carbon Neutralization, Inner Mongolia University of Science and Technology, Baotou, P. R. China