2023, Vol. 10, No. 2. - go to content...

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DOI: 10.15862/11NZOR223 (https://doi.org/10.15862/11NZOR223)

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Gorelkina A.К., Belyaeva O.V., Golubeva N.S., Gora N.V., Timoshchuk I.V. Extraction of organic pollutants from wastewater to improve the sanitary reliability of water bodies. Russian journal of resources, conservation and recycling. 2023; 10(2). Available at: https://resources.today/PDF/11NZOR223.pdf (in Russian). DOI: 10.15862/11NZOR223

Extraction of organic pollutants from wastewater to improve the sanitary reliability of water bodies

Gorelkina Alena Кonstantinovna
Kemerovo State University, Kemerovo, Russia
E-mail: alengora@yandex.ru
ORCID: https://orcid.org/0000-0002-3782-2521
RSCI: https://www.elibrary.ru/author_profile.asp?id=564160

Belyaeva Oxana Vladimirovna
Kemerovo State University, Kemerovo, Russia
E-mail: alengora@yandex.ru
ORCID: https://orcid.org/0000-0002-3782-2521
RSCI: https://www.elibrary.ru/author_profile.asp?id=564160

Golubeva Nadezhda Sergeevna
Kemerovo State University, Kemerovo, Russia
E-mail: golnadya@yandex.ru
RSCI: https://www.elibrary.ru/author_profile.asp?id=542847

Gora Natalia Viacheslavovna
Kemerovo State University, Kemerovo, Russia
E-mail: goranataliya@yandex.ru
RSCI: https://www.elibrary.ru/author_profile.asp?id=744545

Timoshchuk Irina Vadimovna
Kemerovo State University, Kemerovo, Russia
E-mail: irina_190978@mail.ru
RSCI: https://www.elibrary.ru/author_profile.asp?id=564161

Abstract. The purpose of this study was to evaluate the principal possibility of increasing the adsorption of hydroxybenzene by the carbon sorbent Purolate-standard by a combination of reactive and thermal oxidative modification. The control of the hydroxybenzene concentration from the solution was determined by spectrophotometry. The possibility of increasing the adsorption capacity by means of combined oxidative modification (reagent oxidation followed by heat treatment) of carbon material was considered. The characteristics of the extraction process were established on the basis of Langmuir and Dubinin-Radushkevich models. Analysis of the porous structure and functional groups of the surface of anthracite and its modified samples showed changes in the above parameters. The processing of experimental data in the coordinates of the Langmuir and Dubinin–Radushkevich equations showed a satisfactory correlation, which allows us to calculate the values: Gibbs energy, the maximum adsorption capacity of the monolayer, the adsorption equilibrium constant, the maximum volume of the adsorption space. The obtained values allow us to establish the adsorption mechanism, both on the feedstock and on the processed samples. It was found that the oxidation of 2 % ammonium salt of peroxodiseric acid with subsequent heating at 200°C reduced the adsorption of phenol. Treatment of the adsorbent with 5 % ammonium salt of peroxodiseric acid with heating at 250°C slightly increased the adsorption of phenol. The use of the studied oxidants to increase the adsorption capacity of anthracite did not give the expected result with respect to hydroxybenzene. Sorption on macroporous carbon materials with preliminary modification can be recommended as a promising direction in relation to organic pollutants. The study of the adsorption of hydroxybenzene on anthracite of the Purolate-standard brand was carried out under static conditions. The authors have proved that reducing the sanitary reliability of reservoirs is possible by means of reducing the level of contamination of wastewater. The mechanism of adsorption of hydroxybenzene on sorbents modified by a combined method under different regimes has been studied for the first time, which is a scientific novelty of the study.

Keywords: sorbents; anthracite; modification; adsorption hydroxybenzene; adsorption isotherms; adsorption parameters; adsorption capacity

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