1. State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, P.R. China
2. School
of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China
3. College
of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
4. Southern
Cross GeoScience, Southern Cross University, Lismore, NSW 2480, Australia