2020 (2) 3

https://doi.org/10.15407/polymerj.42.02.096

MODIFICATION OF CERAMIC MEMBRANES BY CARBONIZED ORGANIC-INORGANIC COMPOSITES

V.V.Goncharuk,

Dumanskii Institute of 1Colloid Chemistry and the Chemistry of Water of the NAS of Ukraine, 42, Akademik Vernadsky boulevard, Kyiv, 03142, Ukraine,

e-mail: honch@iccwc.kiev.ua

ORCID: 0000-0002-2835-1270

V.M.Ogenko,

V.I. Vernadsky Institute of General and Inorganic Chemistry of the NAS of Ukraine, 32/34, Akademik Palladin avenue, Kyiv, 03680, Ukraine,

e-mail: vladimir.ogenko@gmail.com

ORCID: 0000-0002-3243-5960

L.V.Dubrovina,

Dumanskii Institute of 1Colloid Chemistry and the Chemistry of Water of the NAS of Ukraine, 42, Akademik Vernadsky boulevard, Kyiv, 03142, Ukraine,

V.I. Vernadsky Institute of General and Inorganic Chemistry of the NAS of Ukraine, 32/34, Akademik Palladin avenue, Kyiv, 03680, Ukraine,

e-mail: dubrovina@ua.fm

ORCID: 0000-0002-1094-3294

O.A.Vyshnevskyi,

Semenenko Institute of geochemistry, mineralogy and ore formation of the NAS of Ukraine, 34, Akademik Palladin avenue, Kyiv, 03142, Ukraine,

e-mail: vyshnevskyy@i.ua

ORCID: 0000-0002-7206-2185

I.V.Dubrovin,

Chuiko Institute of Surface Chemistry of the NAS of Ukraine, 17, General Naumov str., Kyiv, 03164, Ukraine,

e-mail: dilvua@gmail.com

ORCID: 0000-0001-7236-9702

Polym. J., 2020, 42, no. 2: 96-103.

Section: Structure and properties.

 

Language: Ukrainian.

Abstract:

The tubular ceramic membranes of clay minerals were modified with silica and pyrocarbon, which were obtained by carbonization of organic-inorganic composites at 800 °С in an argon flow. A precursor to carbonization of membrane II (organic-inorganic composite) was formed in the pores of unmodified membranes from liquid glass and the polyisocyanate and sucrose. A precursor to carbonization of the membrane III (organic-inorganic composite) was formed in the pores from liquid glass and the polyisocyanate and aqueous solution of sodium carboxymethylcellulose. The mixture of components for the synthesis of an organic-inorganic composite in membrane III additionally contained an aqueous solution of nickel chloride. As a result of the modification, the membranes became black with a metallic luster. The composition and structure of the membranes were studied by XRF and SEM. The modifier of the membranes is located in the pore space and a mixing of silica and pyrocarbon. Membrane III is additionally modified with metallic nickel. Membrane modifier II is a continuous coating of pore walls and individual particles ranging in size from a few nm to ~ 1 μm. Membrane modifier III is a network of tows and films <0.5 μm, which includes individual agglomerated particles and nickel crystals. The apparent density and open porosity for the unmodified membrane are 1.80 g/cm3 and 40.4 %, for membrane II – 2.13 g/cm3 and 25.3 %, for membrane III – 1.90 g/cm3 and 32.0 %. Testing of modified membranes was carried out on water purification of direct scarlet dye from using the baromembrane method. The concentration of direct scarlet dye in aqueous solutions was 300 mg/dm³. The unmodified membrane does not inhibit direct scarlet dye at all The period of time until the establishment of dynamic equilibrium in systems during water purification is 2h. The testing of modified membranes showed that the membranes have ultrafiltration properties. The retention factor (R) after 2 hours at a working pressure of 0.7 MPa is 100 %. The specific productivity (Jv) in this case is 25 (membrane II) and 34 (membrane III) dm³/(m²•h).

 

Key words: ceramic membranes, liquid glass, polyisocyanate, sodium carboxymethyl cellulose, sucrose, pyrocarbon, silica, water purification.

 

 

 

References

1. Komarov V.S. Adsorbenti: voprosi teorii, sinteza i strukturi. Minsk: Belaruskaya navuka, 1997: 287. ISBN:958-08-0020-8.
2. Soldatov A.P., Rodionova I.A., Shkol’nikov E.I., Parenago O.P., Volkov V.V. The modification of inorganic composition membranes by pyrocarbon deposition. Rus. J. Phys. Chem. A, 2004, 78, no. 9: 1458.
3. Urban M., Mehn D., Konya Z., Kiricsi J. Production of carbon nanotubes inside the pores of mesoporous silicates. Chem. Phys. Lett., 2002, 359, no. 1–2: 95–100. https://doi.org/10.1016/S0009-2614(02)00656-5.
4. Sazanov Yu.N., Gribanov A.V. Karbonizatsiya polimerov. SPb: Nauchnye Osnovy i Tekhnologii, 2013: 296.
5. Goncharuk V.V., Dubrovina L.V., Kucheruk D.D., Samsoni-Todorov A.O., Ogenko V.M., Dubrovin I.V. Water purification of dyes by ceramic membranes modified by pyrocarbon of carbonized polyisocyanate. J.Water Chem. and Technol., 2016, 38, no. 1: 34–38. https://doi.org/10.3103/S1063455X16010069.
6. Goncharuk V.V., Dubrovina L.V., Kucheruk D.D., Samsoni-Todorov A.O., Ogenko V.M., Dubrovin I.V. Water purification of dyes by ceramic membranes modified by pyrocarbon from carbonized polymers. J.Water Chem. and Technol., 2016, 38, no. 3: 163–166. https://doi.org/10.3103/S1063455X16030073.
7. Iler R. Chemistry of Silica. Solubility, Polymerization, Colloid and Surface Properties and Biochemistry of Silica. New York: Wiley, 1979: 896. ISBN: 978-0-471-02404-0.
8. Korneev V.I., Danilov V.V. Zhidkoe i rastvorimoe steklo. SPb: Stroiizdat, 1996: 216.
9. Kudryavtsev P.G., Figovsky O.L. Sol-del technolodiya poristih kompozitov. Saarbrucken: Lambert Academic Pablisher, 2015: 466. ISBN:978-3-659-78529-0.
10. Budzinska V.L., Lebedev E.V. Organic-inorganic composites on the based on sodium of silicate, polyisocyanates modified oligomers which contains urethane. Polym. J. (Ukr.), 2013, 35, no. 3: 298–303.
11. Budzinska V.L., Nogina T.M., Lebedev E.V. Biodegradable organo-inorganic composites on the basis on sodium silicate, urethane oligomer carboxymethyl cellulose. Polym. J. (Ukr.), 2015, 37, no. 3: 306–312. https://doi.org/10.15407/polymerj.37.03.306.
12. Ishchenko S.S., Pridatko A.B., Novikova T.I., Lebedev E.V. Interaction of isocyanates with aqueous solutions of alkali metal silicates. Polym. Sci., A. 1996, 38, no. 5: 485.
13. Chesnokov V.V., Buyanov R.A. The formation of carbon filaments upon decomposition of hydrocarbons catalysed by iron subgroup metals and their alloys. Russ.Chem.Rev., 2000, 69, no. 7: 623. https://doi.org/10.1070/RC2000v069n07ABEH000540.
14. Volochko A.T., Podbolotov K.B., Dyatlova E.M. Ogneupornie i tugoplavkie keramicheskie materiali. Minsk: Belаrus. Nabyka, 2013: 385.
15. Bryk M.T., Tsapyuk E.A. Ultrafiltracija. Kyiv: Naukova Dumka: 1989: 288.
16. Saunders J., Frish K. Polyurethanes: Chemistry and Technology. Part I, Chemistry. New York: Wiley, New York, Interscience, 1962: 368.
17. Dudkin M.S. Vvedenie v himiiu uglevodov. Кyiv: Vischa shkola, 1976:176.