Abstract
This work investigates the influence of the parameters of a unipolar corona discharge (the treatment time, voltage) on the performance and selectivity of separation of model emulsions “oil in water” based on the oil in the Devonian deposits of the Tomatocage field (Republic of Tatarstan) using polyacrylonitrile membranes with a molecular weight cutoff of particles of 60 kDa. The values of chemical oxygen demand of the original emulsions and filtrates are determined. The values of the processing time (30 s) and voltage of the corona (5 kV) on membranes which achieved the best performance and selectivity of the separation process of oil-water emulsion are determined. The methods of lying drop, X-ray diffraction, and atomic force microscopy showed changes in the surface structure and internal structure of the treated membrane. In particular, there was decrease in the wetting angle from 45.1° to 43.3° and an increase in the degree of crystallinity from 0.15 to 0.18, which was due to the flow on the surface of the PES membrane processes of etching and oxidation resulting from exposure to a unipolar corona discharge ozone, which is also confirmed by images of the surface of the filter elements and the histograms of the topography, on the basis of which it showed a decrease in height and number of protrusions from 42 nm and 7500 to 10 nm and 2500.
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REFERENCES
Tansel, B., Regula, J., and Shalewitz, R., Treatment of fuel oil and crude oil contaminated waters by ultrafiltration membranes, Desalination, 1995, vol. 102, pp. 301–311.
Bodzek, M. and Konieczny, K., The use of ultrafiltration membranes made of various polymers in the treatment of oil-emulsion wastewaters, Waste Manage., 1992, vol. 12, pp. 75–84.
Ragoubi, M., Bienaime, D., Molina, S., George, B., and Merlin, A., Impact of corona treated hemp fibres onto mechanical properties of polypropylene composites made thereof, Ind. Crops Prod., 2010, vol. 31, no. 2, pp. 344–349.
Ragoubi, M., George, B., Molina, S., Bienaime, D., Merlin, A., Hiver, J.-M., and Dahoun, A., Effect of corona discharge treatment on mechanical and thermal properties of composites based on miscanthus fibres and polylactic acid or polypropylene matrix, Composites, Part A, 2012, vol. 43, no. 4, pp. 675–685.
Esena, P., Riccardi, C., Zanini, S., Tontini, M., Poletti, G., and Orsini, F., Surface modification of PET film by a DBO device at atmospheric pressure, Surf. Coat. Technol., 2005, vol. 200, nos. 1–4, pp. 664–667.
Dumitrascu, N., Borcia, G., and Popa, G., Corona discharge treatments of plastified PVC samples used in biological environment, J. Appl. Polym. Sci., 2001, vol. 81, no. 10, pp. 2419–2425.
Anan’ev, V.V., Peretokin, T.N., Zaikov, G.E., and Sof’ina, S.Yu., Modification of the adhesive properties of polymer films by corona discharge treatment, Vestn. Kazan. Tekhnol. Univ., 2014, no. 5, pp. 116–119.
Sadeghi, I., Aroujalian, A., Raisi, A., Dabir, B., and Fathizadeh, M., Surface modification of polyethersulfone ultrafiltration membranes by corona air plasma for separation of oil/water emulsions, J. Membr. Sci., 2013, vol. 430, no. 3, pp. 24–36.
Dryakhlov, V.O., Nikitina, M.Yu., Shaikhiev, I.G., Galikhanov, M.F., Shaikhiev, T.I., and Bonev, B.S., Effect of parameters of the corona discharge treatment of the surface of polyacrylonitrile membranes on the separation efficiency of oil-in-water emulsions, Surf. Eng. Appl. Electrochem., 2015, vol. 51, no. 4, pp. 406–411.
Dryakhlov, V., Shaikhiev, T., Shaikhiev, I., Zagidullina, I., Bonev, B., and Nenov, V., Intensification of breaking of water-in-oil emulsions by membranes treated in the area of corona discharge or in the plasma flow, Bulg. Chem. Commun., 2015, vol. 47, pp. 109–115.
Shaikhiev, I.G., Galikhanov, M.F., Dryakhlov, V.O., Alekseeva, M.Yu., and Shaikhiev, T.I., Enhanced purification of oil-in-water emulsions using polymer membranes treated in a corona-discharge field, Chem. Petrol. Eng., 2016, vol. 52, nos. 5–6, pp. 352–356.
Sessler, G., Electrets, New York: Springer-Verlag, 1987.
Kestelman, V.N., Pinchuk, L.S., and Goldade, V.A., Electrets in Engineering: Fundamentals and Applications, New York: Springer-Verlag, 2000. https://doi.org/10.1007/978-1-4615-4455-5
Yovcheva, T., Corona Charging of Synthetic Polymer Films, New York: Nova Science, 2010.
Caceres, C.A., Mazzola, N., França, M., and Canevarolo, S.V., Controlling in-line the energy level applied during the corona treatment, Polym. Test., 2012, vol. 3, no. 4, pp. 505–511.
Carlsson, D.J. and Wiles, D.M., Surface studies by attenuated total reflection spectroscopy. I. Corona treatment of polypropylene, Can. J. Chem., 1970, vol. 48, pp. 2387–2406.
Overney, R.M., Lüthi, R., Haefke, H., Frommer, J., Meyer, E., Güntherodt, H.-J., Hild, S., and Fuhrmann, J., An atomic force microscopy study of corona-treated polypropylene films, Appl. Surf. Sci., 1993, vol. 64, no. 3, pp. 197–203.
Briggs, D., Kendall, C.R., Blythe, A.R., and Wootton, A.B., Electrical discharge treatment of polypropylene film, Polymer, 1983, vol. 24, no. 1, pp. 47–52.
Zhang, J.W., Lebrun, L., Guiffard, B., Cottinet, P.-J., Belouadah, R., Guyomar, D., and Garbuio, L., Influence of corona poling on the electrostrictive behavior of cellular polypropylene films, Sens. Actuators, A, 2012, vol. 175, pp. 87–93.
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Shaikhiev, I.G., Dryakhlov, V.O., Galikhanov, M.F. et al. Separation of Oil Emulsion Using Polyacrylonitrile Membranes, Modified by Corona Discharge. Inorg. Mater. Appl. Res. 11, 1160–1164 (2020). https://doi.org/10.1134/S2075113320050299
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DOI: https://doi.org/10.1134/S2075113320050299