References

1. S. Jamaly, A. Giwa, S.W. Hasan, Recent improvements in oily wastewater treatment: progress, challenges, and future opportunities, J. Environ. Sci., 37 (2015) 15–30.
2. X. Zhao, T. Yang, L. Liu, X. Zhang, L. Fan, Y. Huang, Effect of aluminum speciation on silica removal during coagulation of heavy-oil wastewater using polyaluminum chloride, Desal. Wat. Treat., 25 (2016) 11789–11799.
3. K. Tong, Y. Zhang, P.K. Chu, Evaluation of calcium chloride for synergistic emulsification of super heavy oil wastewater, Colloids Surf., A, 419 (2013) 46–52.
4. Z. Yang, B. Gao, C. Li, Q. Yue, B. Liu, Synthesis and characterization of hydrophobically associating cationic polyacrylamide, Chem. Eng. J., 161 (2010) 27–33.
5. X. Wang, S. Xu, Y. Tan, J. Du, J. Wang, Synthesis and characterization of a porous and hydrophobic cellulose-based composite for efficient and fast oil–water separation, Carbohydr. Polym., 140 (2016) 188–194.
6. W. Wang, Z. Ye, F. Li, Removal of oil from simulated oilfield wastewater using modified coal fly ashes, Desal. Wat. Treat., 21 (2016) 9644–9650.
7. J. Zhong, X. Sun, C. Wang, Treatment of oily wastewater produced from refinery processes using flocculation and ceramic membrane filtration, Sep. Purif. Technol., 32 (2003) 93–98.
8. S. Safari, M.A. Aghdam, H.R. Kariminia, Electrocoagulation for COD and diesel removal from oily wastewater, Int. J. Environ. Sci. Technol., 13 (2016) 231–242.
9. N. Habashi, N. Mehrdadi, A. Mennerich, A. Alighardashi, A. Torabian, Hydrodynamic cavitation as a novel approach for pretreatment of oily wastewater for anaerobic co-digestion with waste activated sludge, Ultrason. Sonochem., 31 (2016) 362–370.
10. M. Tir, N. Moulai-Mostefa, Optimization of oil removal from oily wastewater by electrocoagulation using response surface method, J. Hazard. Mater., 158 (2008) 107–115.
11. S. Ibrahim, S. Wang, H.M. Ang, Removal of emulsified oil from oily wastewater using agricultural waste barley straw, Biochem. Eng. J., 49 (2010) 78–83.
12. T. Yang, B. Qiao, G. Li, Q. Yang, Improving performance of dynamic membrane assisted by electrocoagulation for treatment of oily wastewater: effect of electrolytic conditions, Desalination, 363 (2015) 134–143.
13. T. Lu, D. Qi, H. Zhao, Y. Cheng, Synthesis of hydrophobically modified flocculant by aqueous dispersion polymerization and its application in oily wastewater treatment, Polym. Eng. Sci., 55 (2014) 1–7.
14. K. Liao, X. Ye, P. Chen, Z. Xu, Biomineralized polypropylene/CaCO₃ composite nonwoven meshes for oil/water separation, J. Appl. Polym. Sci., 131 (2014) 39897.
15. A.L. Ahmad, S. Sumathi, B.H. Hameed, Residual oil and suspended solid removal using natural adsorbents chitosan, bentonite and activated carbon: a comparative study, Chem. Eng. J., 108 (2005) 179–185.
16. C. Wang, A. Alpatova, K.N. McPhedran, M.G. El-Din, Coagulation/flocculation process with polyaluminum chloride for the remediation of oil sands process-affected water: performance and mechanism study, J. Environ. Manage., 160 (2015) 254–262.
17. C.E. Santo, V.J.P. Vilar, C.M.S. Botelho, A. Bhatnagar, E. Kumar, R.A.R. Boaventura, Optimization of coagulation–flocculation and flotation parameters for the treatment of a petroleum refinery effluent from a Portuguese plant, Chem. Eng. J., 183 (2012) 117–123.
18. J. Zhang, B. Jing, S. Fang, M. Duan, Y. Ma, Synthesis and performances for treating oily wastewater produced from polymer flooding of new demulsifiers based on polyoxyalkylated N,N-dimethylethanolamine, Polym. Adv. Technol., 26 (2015) 190–197.
19. K. Tong, A. Lin, G. Ji, D. Wang, X. Wang, The effects of adsorbing organic pollutants from super heavy oilwastewater by lignite activated coke, J. Hazard. Mater., 308 (2016) 113–119.
20. S. Mirshahghassemi, J.R. Lead, Oil recovery from water under environmentally relevant conditions using magnetic nanoparticles, Environ. Sci. Technol., 49 (2015) 11729–11736.
21. T. Chen, M. Duan, S. Fang, Fabrication of novel superhydrophilic and underwater superoleophobic hierarchically structured ceramic membrane and its separation performance of oily wastewater, Ceram. Int., 42 (2016) 8604–8612.
22. X. Zhao, L. Liu, Y. Wang, H. Dai, D. Wang, H. Cai, Influences of partially hydrolyzed polyacrylamide (HPAM) residue on the flocculation behavior of oily wastewater produced from polymer flooding, Sep. Purif. Technol., 62 (2008) 199–204.
23. Y. Liu, Advanced treatment of biologically treated heavy oil wastewater for reuse as boiler feed-water by combining ultrafiltration and nanofiltration, Desal. Wat. Treat., 28 (2016) 13113–13119.
24. J. Li, D. Li, W. Li, H. She, H. Feng, D. Hu, Facile fabrication of three-dimensional superhydrophobic foam for effective separation of oil and water mixture, Mater. Lett., 171 (2016) 228–231.
25. Y. Sun, H. Zheng, Z. Xiong, Y. Wang, X. Tang, W. Chen, Y. Ding, Algae removal from raw water by flocculation and the fractal characteristics of flocs, Desal. Wat. Treat., 56 (2015) 894–904.
26. T.K. Trinh, L.S. Kang, Application of response surface method as an experimental design to optimize coagulation tests, Environ. Eng. Res., 2 (2010) 63–70.
27. M.A. Bezerra, R.E. Santelli, E.P. Oliveira, L.S. Villar, L.A. Escaleira, Response surface methodology (RSM) as a tool for optimization in analytical chemistry, Talanta, 76 (2008) 965–977.
28. W. Zhou, B. Gao, Q. Yue, L. Liu, Y. Wang, Al-Ferron kinetics and quantitative calculation of Al(III) species in polyaluminum chloride coagulants, Colloids Surf., A, 278 (2006) 235–240.
29. H. Dong, B. Gao, Q. Yue, H. Rong, S. Sun, S. Zhao, Effect of Fe (III) species in polyferric chloride on floc properties and membrane fouling in coagulation–ultrafiltration process, Desalination, 335 (2014) 102–107.
30. G. Zhu, H. Zheng, Z. Zhang, T. Tshukudu, P. Zhang, X. Xiang, Characterization and coagulation–flocculation behavior of polymeric aluminum ferric sulfate (PAFS), Chem. Eng. J., 178 (2011) 50–59.
31. W. Chen, H. Zheng, J. Guo, F. Li, X. Tang, B. Liu, Y. Zhou, Preparation and characterization of a composite coagulant: polyferric titanium sulfate, Water Air Soil Pollut., 227 (2016) 79.
32. G. Zhu, H. Zheng, W. Chen, W. Fan, P. Zhang, T. Tshukudu, Preparation of a composite coagulant: polymeric aluminum ferric sulfate (PAFS) for wastewater treatment, Desalination, 285 (2012) 315–323.
33. H. Zheng, G. Zhu, S. Jiang, T. Tshukudu, X. Xiang, P. Zhang, Q. He, Investigations of coagulation–flocculation process by performance optimization, model prediction and fractal structure of flocs, Desalination, 269 (2011) 148–156.
34. H. Wu, R. Yang, R. Li, C. Long, H. Yang, A. Li, Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology, Environ. Sci. Pollut. Res., 22 (2015) 13038–13048.
35. J. Wang, Y. Chen, Y. Wang, S. Yuan, H. Yu, Optimization of the coagulation-flocculation process for pulp mill wastewater treatment using a combination of uniform design and response surface methodology, Water Res., 45 (2011) 5633–5640.
36. H. Zheng, J. Ma, J. Zhai, C. Zhu, X. Tang, Y. Liao, L. Qian, Y. Sun, Optimization of flocculation process by response surface methodology for diethyl phthalate removal using anionic polyacrylamide, Desal. Wat. Treat., 28 (2014) 5390–5400.
37. T. Sun, C. Sun, G. Zhu, X. Miao, C. Wu, S. Lv, W. Li, Preparation and coagulation performance of poly-ferric-aluminum-silicate-sulfate from fly ash, Desalination, 268 (2011) 270–275.
38. T. Lu, H. Zhao, D. Qi, Y. Chen, Synthesis of a novel amphiphilic and cationic chitosan-based flocculant for efficient treatment of oily wastewater, Adv. Polym. Tech., 34 (2015) 21502.
39. Y. Sun, H. Zheng, M. Tan, Y. Wang, X. Tang, L. Feng, X. Xiang, Synthesis and characterization of composite flocculant PAFS– CPAM for the treatment of textile dye wastewater, J. Appl. Polym. Sci., 131 (2014) 40062.
40. K. Yang, Y. Li, Y. Chen, Removal of oil and Cr(VI) from wastewater using modified pectin flocculants, J. Environ. Eng., 140 (2014) 472–472.
41. J. Zhang, B. Jing, G. Tan, L. Zhai, S. Fang, Y. Ma, Comparison of performances of different types of clarifiers for the treatment of oily wastewater produced from polymer flooding, Can. J. Chem. Eng., 93 (2015) 1288–1294.
42. R. Li, J. Pan, W. Qin, J. Yang, Y. He, Effect of pH on characterization and coagulation performance of poly-silicic-cation coagulant, Desalination, 351 (2014) 37–42.
43. Y. Zeng, J. Park, Characterization and coagulation performance of a novel inorganic polymer coagulant— poly-zinc-silicate-sulfate, Colloids Surf., A, 334 (2009) 147–154.
44. A.L. Ahmad, S. Sumathi, B.H. Hameed, Coagulation of residue oil and suspended solid in palm oil mill effluent by chitosan, alum and PAC, Chem. Eng. J., 118 (2006) 99–105.