1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
2. Tianjin Key Lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
3. School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
4. School of Ecology and Environment, Tibet University, Lhasa 850000, China
5. Mathematics Education Department, Universitas Serambi, Mekkah 23245, Indonesia