Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


Full text:
(downloads: 246)
Language: 
Russian
Heading: 
Article type: 
Article
UDC: 
541.183”

Adsorption of organic reagents by natural bentonites modified with aluminum and iron (III) polyhydroxocations

Autors: 
Nikitina Natalya V., Saratov State University
Lamikhova Anna P., Saratov State University
Nikitina Nadezhda V., Saratov State University
Kazarinov Ivan А., Saratov State University
Abstract: 

The effective nanostructured sorbents based on natural bentonite modified with aluminum and iron (III) polyhydroxocations were obtained. The elemental composition of the obtained sorbents was studied. The specific surface area was determined for the studied samples. It was shown that modified sorbents based on natural bentonite were nanostructured objects. IR spectroscopy showed that modification of natural bentonite led to the changes in its structural properties. While studying the sorption process on modified sorbents, it was found that the modification of bentonite with aluminum and iron (III) compounds using the “codeposition” method led to the increase in the sorption capacity of the obtained sorbents. The sorption properties of the obtained sorbents were tested in relation to a number of organic dyes of the anionic and cationic types. It was established that the maximum sorption efficiency was achieved for extracting cationic substances from water, including organic dyes.

Reference: 
  1. Yagubov A. I. Sorption processes of sewage treatment from methylene blue on Fe (III) bentonite: experimental researches and madeling. Condensed Matter and Interphases, 2007, vol. 9, no. 2, pp. 177–1810 (in Russian).
  2. Nikitina Nat. V., Komov D. N., Kazarinov I. A., Nikitina Nad. V. Physical and chemical properties of sorbents based on bentonite clay, modifi ed with iron (III) and aluminum polyhydroxocations by the «coprecipitation». Sorbtsionnye i khromatografi cheskie protsessy, 2016, vol. 16, no. 2, pp. 191–199 (in Russian).
  3. Kloprogge J. T. Synthesis of Smectites and Porous Pillared Clay Catalyst: Review. J. of Porous Materials, 1998, vol. 5, pp. 5–41.
  4. Komarov B. C. Adsorbenty. Voprosy teorii sinteza i struktury [The adsorbents. Questions of the theory of synthesis and structure]. Minsk, Belorusskaya navuka Publ., 1997. 287 p. (in Russian).
  5. Khankhasaeva S. Ts., Badmaeva S. V., Dashinamzhilova E. Ts., Bryzgalova L. V., Ryazantsev A. A. Adsorption of Anionic Dyes on Montmorillonite Modifi ed with Polyhydroxo Complexes of Aluminium and Iron. Chemistry for Sustainable Development, 2006, vol. 14, pp. 287–294.
  6. Nikitina Nad. V., Kazarinov I. A., Nikitina Nat. V. Fizikohimicheskie svojstva sorbentov na osnove prirodnogo bentonite [Physical and chemical properties of sorbents based on natural bentonites]. V Mezhdunarodnaya konferentsiya-shkola po himicheskoi tekhnologii HT’16: sb. tezisov dokladov satellitnoi konferentsii XX Mendeleevskogo s”ezda po obshchej i prikladnoj khimii: v 3 t. [V International Conference-Schools of Chemical Technology CT’16: collection of abstracts of the satellite conference of the XX Mendeleev Congress on General and Applied Chemistry: in 3 vols.]. Volgograd, VolgGTU, 2016, vol. 3, pp. 315–317 (in Russian).
  7. Tarasevich Yu. I. Stroenie i khimiya poverkhnosti sloistykh silikatov [Structure and surface chemistry of layered silicates]. Kiev, Naukova dumka Publ., 1988. 248 p. (in Russian).
  8. Rakitskaya T. L., Kiose T. A., Dzhiga A. M., Toporov S. V. IR spectral study of structures and phase compositions of Ukrainian bentonites. Odesa National University Herald. Chemistry, 2012, vol. 17, no. 1, pp. 13–19 (in Russian).
  9. Vakalova T. V. Gliny. Osobennosti struktury i metody issledovaniya [Features of the structure and methods of research]. Tomsk, TGU, 1998. 121 p. (in Russian).
Received: 
28.10.2020
Accepted: 
20.11.2020
Published: 
01.03.2021