| Autor: |
Lazarev, S. I., Nagornov, S. A., Kovalev, S. V., Konovalov, D. N., Kornev, A. Yu. |
| Zdroj: |
Journal of Surface Investigation: X-Ray, Synchrotron & Neutron Techniques; Feb2022, Vol. 16 Issue 1, p73-81, 9p |
| Abstrakt: |
The problem of biofuel purification using microfiltration and prefiltration at various transmembrane pressures is considered. The scheme of an experimental installation for carrying out the microfiltration process is presented. One of the main elements of the installation is a flat-chamber type working cell, the design of which is described in detail. For the implementation of membrane purification, working samples of MFFK-3 microfiltration membrane and PP-190 preliminary filter manufactured by Research and Production Enterprise Technofilter (Vladimir, Russia) are selected. The kinetic dependences of the specific outlet flow for the MFFK-3 and PP-190 porous films are obtained as a function of time at various transmembrane pressures. The dependences show four periods of change in the specific outlet flow, where gel clots are formed on the MFFK-3 membrane and the PP-190 filter. The dependences of the water content in the filtrate on the transmembrane pressure are given. To separate water from the E phase, it is necessary to maintain a pressure in the baromembrane system of at least 0.5 MPa. Electron microscopic studies of the initial and working samples of MFFK-3 and PP-190 porous films are carried out. Chromatographic analysis of the permeate and concentrate after microfiltration purification show that such components as methanol, margarine oleic, oleic, behenic, erucic, and docosadienoic acids pass through the membrane partition forming a dynamic gel layer on the surface, which prevents the passage of water molecules. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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