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Erschienen in: Surface Engineering and Applied Electrochemistry 2/2023

01.04.2023

Modification of Cellulose Acetate Membranes with Unipolar Corona Discharge to Separate Oil–Water Emulsion

verfasst von: R. R. Nabiev, V. O. Dryakhlov, I. G. Shaikhiev, M. F. Galikhanov, I. R. Nizameev

Erschienen in: Surface Engineering and Applied Electrochemistry | Ausgabe 2/2023

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Abstract

The separation of oil–water emulsion with cellulose acetate membranes modified with a unipolar corona discharge at a voltage of 5–25 kV and time of 1–5 min was investigated. Decrease in the filter roughness after the impact of the corona discharge was determined using atomic-force microscopy. The results of X-ray diffraction analysis and of electrostatic field parameters’ measurements showed a decrease in crystallinity from 0.29 to 0.27 and the formation of positive charges on the surface of the sample, while the formation of a double electric layer according to dielectric spectrometry data was not detected. During the separation of the model oil–water emulsion, an increase in efficiency was revealed as 80 to 98% and the separation productivity from 15 to 35 dm3/(m2 h) after treatment in the field of a unipolar corona discharge of cellulose acetate membranes, which is explained by a change in the supramolecular and chemical structure of the latter.

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Metadaten
Titel
Modification of Cellulose Acetate Membranes with Unipolar Corona Discharge to Separate Oil–Water Emulsion
verfasst von
R. R. Nabiev
V. O. Dryakhlov
I. G. Shaikhiev
M. F. Galikhanov
I. R. Nizameev
Publikationsdatum
01.04.2023
Verlag
Pleiades Publishing
Erschienen in
Surface Engineering and Applied Electrochemistry / Ausgabe 2/2023
Print ISSN: 1068-3755
Elektronische ISSN: 1934-8002
DOI
https://doi.org/10.3103/S1068375523020138

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