1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
2. College of Electric Power, North China University of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, People’s Republic of China
3. Institute of Environmental Science and Engineering, Nanyang Technological University, Innovation Center, Block 2, Unit 237, 18 Nanyang Drive, Singapore 637723, Singapore