1. Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, People’s Republic of China
2. Department of Civil and Environmental Engineering and Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235-1831, United States
3. Key Laboratory of Unconventional Oil & Gas Development, Ministry of Education, School of Petroleum Engineering, China University of Petro1eum (East China), Qingdao 266580, People’s Republic of China