APPLICATION OF TRACK MEMBRANES IN PROCESSES OF DIRECT AND REVERSE OSMOSIS
Abstract
A method of design of polyethylene terephthalate track membranes with asymmetric (conic) pores shaped by ion-track technology was considered. The method consists of two main stages: irradiation by swift heavy ions and one-sided etching of latent tracks. The shape and dimensions of individual pores of track membranes were defined by scanning electron microscopy of surfaces and cross-sections of membranes prepared with different etching times. Based on these results, time dependencies of cone bases and apex diameters of asymmetrical pores were determined. The possibility of the membranes application for direct and reverse osmosis was determined according to the results of investigations asymmetric track membranes with conic shape pores by means of measuring of hydrophility, air and water performance. Based on the analysis of tensile strength under loading with slowly changing pressure, the maximum pressure value that the membrane could stare was determined, as well as the dependence of the strength characteristics on the samples porosity. Simulation study of osmotic processes in NaCl solution efficiency of the track membranes for the direct and reverse osmosis was demonstrated and the influence of membrane parameters on their performance and the degree of water purification was showed.
About the Authors
A. L. Kozlovskiy
Institute of Nuclear Physics, Almaty
L. N. Gumilyov Eurasian National University, Astana
Kazakhstan
Master of Science, Acting Head of the Laboratory of Solid State Physics, Astana branch of the Institute of Nuclear Physics
Kazakhstan
Master of Science, Acting Head of the Laboratory of Solid State Physics, Astana branch of the Institute of Nuclear Physics
K. K. Borgekov
Institute of Nuclear Physics, Almaty
L. N. Gumilyov Eurasian National University, Astana
Kazakhstan
Master of Engineering, engineer of the Technological laboratory of track membranes, Astana branch of the Institute of Nuclear Physics
Kazakhstan
Master of Engineering, engineer of the Technological laboratory of track membranes, Astana branch of the Institute of Nuclear Physics
M. V. Zdorovets
Institute of Nuclear Physics, Almaty
Ural Federal University named after the first President of Russia B. N. Yeltsin, Ekaterinburg
Kazakhstan
Ph. D. (Physics and Mathematics), Head of the Laboratory of engineering profile, L.N. Gumilyov Eurasian National University
Kazakhstan
Ph. D. (Physics and Mathematics), Head of the Laboratory of engineering profile, L.N. Gumilyov Eurasian National University
E. Arkhangelsky
School of Engineering, Nazarbayev University, Astana
Kazakhstan
Professor
Kazakhstan
Professor
A. E. Shumskaya
Scientific and Practical Materials Research Center of the National Academy of Sciences of Belarus, Minsk
Belarus
Researcher in Cryogenic Research Division
Belarus
Researcher in Cryogenic Research Division
E. Yu. Kaniukov
Scientific and Practical Materials Research Center of the National Academy of Sciences of Belarus, Minsk
Belarus
Leading Researcher in Cryogenic Research Division
Belarus
Leading Researcher in Cryogenic Research Division
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