Nanofiltration of Vapor-Air Mixture for Removal of Saturated Hydrocarbons Using Composite Membranes

• Published in: Chemical and petroleum engineering 2023-05, Vol.59 (1-2), p.166-173
• Main Authors: Fazullin, D. D., Mavrin, G. V., Fazullina, L. I., Shaikhiev, I. G.
• Format: Article
• Language: English
• Subjects: Air purification; Alkanes; Cellulose; Cellulose acetate; Chemistry; Chemistry and Materials Science; Eddy currents; Filter paper; Gasoline; Geotechnical Engineering & Applied Earth Sciences; Industrial Chemistry/Chemical Engineering; Industrial Ecology; Industrial Pollution Prevention; Membranes; Mineral Resources; Mixtures; Nanofiltration; Permeability; Polyethersulfones; Retention; Substrates; Surface layers; Vapors
• ISSN: 0009-2355; 1573-8329
• DOI: 10.1007/s10556-023-01223-3

Research has been carried out in the field of air purification from vapors of saturated hydrocarbon by nanofiltration using commercial polyethersulfone (PES) membranes and a paper-based composite membrane with a surface layer of cellulose acetate (MAC-3). The latter was obtained on a filter paper substrate by immersing one of the substrate sides into a three-component polymer solution. The porosity of the resulting membrane was 46.4%. The membrane thickness determined by the eddy current method was 121 μm. The retention capacity of the composite membrane and commercial PES membranes was studied by separating a vapor-air gasoline – air mixture. The permeability of the MAC-3 composite membrane and the commercial PES-30 membrane during the separation of the vapor-air mixture was 0.33 dm 3 /(m 2 ·h·KPa). The high retention capacity of the MAC-3 composite membrane was established to be more than 90% for nonane and decane; the average retention capacity for alkanes was more than 88.6%. Among the commercial PES membranes, the highest retention capacity for alkanes was established for the PES-30 membrane and was more than 93%.