vuzbiochemiИзвестия вузов. Прикладная химия и биотехнологияProceedings of Universities. Applied Chemistry and Biotechnology2227-29252500-1558ИРНИТУ10.21285/achb.959QDBVYRvuzbiochemi-1417Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯCHEMICAL TECHNOLOGYСоздание адсорбента на основе отработанного кизельгура для очистки воды от нефтиCreation of an adsorbent from spent diatomaceous earth tailored to purify water from oilhttps://orcid.org/0000-0002-2701-9225РуденкоЕ. Ю.RudenkoE. Yu.

Руденко Елена Юрьевна, д.б.н., доцент, профессор

127434, г. Москва, ул. Тимирязевская, 49

Elena Yu. Rudenko, Dr. Sci. (Biology), Associate Professor, Professor

49, Timiryazevskaya St., Moscow, 127434

e_rudenko@rambler.ruРоссийский государственный аграрный университет – МСХА имени К.А. ТимирязеваРоссияRussian State Agrarian University – Moscow Timiryazev Agricultural AcademyRussian Federation202507042025151104111Copyright © Руденко Е.Ю., 20252025Руденко Е.Ю.Rudenko E.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vuzbiochemi.elpub.ru/jour/article/view/1417

Известно, что отработанный кизельгур (диатомит, диатомовая земля), являющийся одним из основных отходов пивоваренного производства, можно использовать в качестве адсорбента для очистки воды от сырой нефти. Термическая и химическая модификация этого отхода пивоварения увеличивает его нефтеемкость. Целью проведенного исследования являлось получение сорбента для очистки воды от нефти на основе различных модификаций отработанного кизельгура. Предварительные исследования показали, что на процесс модификации отработанного диатомита влияют химическая природа и концентрация модифицирующего вещества, температура и продолжительность воздействия. Щелочная модификация отработанного кизельгура эффективнее, чем кислотная, наибольшее влияние на нефтеемкость оказывает модификация раствором гидроксида натрия. Максимальной нефтеемкостью обладает отработанный диатомит, модифицированный 1,5 М раствором гидроксида натрия при температуре 75 °С в течение 120 мин. Для оптимизации методики получения адсорбента, применяемого для очистки воды от нефти, на основании данных предварительных опытов с помощью системы статистического анализа Statistica 10.0 был построен полный факторный план эксперимента и проведены дополнительные опыты. Анализ карты Парето стандартизированных эффектов показал, что на процесс модификации отработанного кизельгура достоверно влияют концентрация модифицирующего реагента и температура проведения процесса модификации, поэтому для получения адсорбента, применяемого для очистки воды от нефти, наиболее оптимальной и эффективной является методика модификации 1,5 М раствором гидроксида натрия при температуре 75 °С в течение 30 мин.

It is known that spent diatomaceous earth (diatomite; kieselguhr), one of the main waste products from the beer filtration process, can be used as an adsorbent to purify water from crude oil. The thermal and chemical modification of this waste product increases its oil capacity. The conducted study was aimed at obtaining a sorbent tailored to purify water from oil using different modifications of spent diatomaceous earth. Preliminary studies revealed that the modification of spent diatomaceous earth is affected by the chemical nature and concentration of the modifying agent, as well as the temperature and duration of exposure. Alkaline modification of spent diatomaceous earth is more effective than acid modification; modification with sodium hydroxide solution produces the greatest effect on oil capacity. The maximum oil capacity is exhibited by spent diatomaceous earth modified with 1.5 M sodium hydroxide solution at 75 °С for 120 min. In order to optimize the procedure for obtaining an adsorbent suitable for purifying water from oil, a full factorial design was implemented on the basis of preliminary experimental data using Statistica 10.0, and additional experiments were conducted. An analysis of Pareto charts of standardized effects revealed that the modification process of spent diatomaceous earth is significantly affected by the modifying reagent concentration and the modification process temperature. Therefore, modification with 1.5 M sodium hydroxide solution at 75 °С for 30 min is the most optimal and effective procedure for obtaining an adsorbent suitable for purifying water from oil.

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The authors declare that there are no conflicts of interest present.