1. State Key Laboratory of Petroleum Pollution Control, China National Petroleum Corporation, Beijing, P.R. China;
2. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China;
3. School of Environment, Harbin Institute of Technology, Harbin, China;
4. College of Chemical Engineering, China University of Petroleum (East China), Qingdao, China