Intensification of separation of oil-in-water emulsions using polysulfonamide membranes modified with low-pressure radiofrequency plasma
- Авторлар: Fedotova A.V.1, Shaikhiev I.G.1, Dryakhlov V.O.1, Nizameev I.R.1, Abdullin I.S.1
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Мекемелер:
- Kazan National Research Technological University
- Шығарылым: Том 57, № 2 (2017)
- Беттер: 159-164
- Бөлім: Article
- URL: https://journal-vniispk.ru/0965-5441/article/view/179085
- DOI: https://doi.org/10.1134/S0965544117020025
- ID: 179085
Дәйексөз келтіру
Аннотация
Effect of low-pressure radiofrequency capacitively-coupled plasma parameters on the separation of model “oil-in-water” emulsions using UPM-20 polysulfonamide membranes with a pore size of 0.01 μm has been studied. Atmospheric air has been used as a plasma gas. The plasma treatment time is 1, 5, 4, and 7 min at a plasma torch anode voltage of Ua = 1.5–7.5 kV. The separated medium is a 3% emulsion based on the industrial oil I-20A; the stabilizer is the surfactant Kosintol-242. The highest performance is observed in the case of membranes treated with plasma for 7 min. It is found that plasma treatment leads to an increase in the emulsion separation efficiency from 90 to 99%. It has been shown that the plasma treatment contributes to the surface hydrophilization of the membranes owing to the formation of oxygen-containing functional groups. The membrane exhibits a contact angle of water of α = 59.6° before treatment and α = 19.5° after a 4-min plasma treatment at Ua = 7.5 kV. Atomic force microscopy reveals that the plasma treatment leads to a change in the surface structure of the membranes, namely, to a decrease in their roughness. The internal structure of the membranes also undergoes changes which result in an increase in their crystallinity.
Негізгі сөздер
Авторлар туралы
A. Fedotova
Kazan National Research Technological University
Email: vladisloved@mail.ru
Ресей, Kazan, 420015
I. Shaikhiev
Kazan National Research Technological University
Email: vladisloved@mail.ru
Ресей, Kazan, 420015
V. Dryakhlov
Kazan National Research Technological University
Хат алмасуға жауапты Автор.
Email: vladisloved@mail.ru
Ресей, Kazan, 420015
I. Nizameev
Kazan National Research Technological University
Email: vladisloved@mail.ru
Ресей, Kazan, 420015
I. Abdullin
Kazan National Research Technological University
Email: vladisloved@mail.ru
Ресей, Kazan, 420015
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