1. Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, P. R. China
2. School of Pharmacy, Weifang Medical University, Weifang 261053, P. R. China
3. College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China