najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-4-510-519najo-43Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХComposite sorbent based on Fe3O4 with Fe(N2H4)xCly for the removal of Chromium(VI) from wastewater.Композитный сорбент на основе Fe3O4 с оболочкой Fe(N2H4)xCly для удаления хрома (VI) из сточной водыhttps://orcid.org/0000-0002-4216-4770ОрдинарцевД. П.OrdinartsevD. P.

Denis P. Ordinartsev

101, Amundsen street, Yekaterinburg, 620016

denis_ordinartsev@mail.ruhttps://orcid.org/0000-0002-7281-1342ПечищеваН. В.PechishchevaN. V.

Nadezhda V. Pechishcheva

101, Amundsen street, Yekaterinburg, 620016; 19, Mira street, Yekaterinburg, 620002

pechischeva@gmail.comhttps://orcid.org/0000-0001-7039-1420ЭстемироваС. Х.EstemirovaS. Kh.

Svetlana Kh. Estemirova

101, Amundsen street, Yekaterinburg, 620016

esveta100@mail.ruhttps://orcid.org/0000-0003-0610-1075КимА. В.KimA. V.

Angelina V. Kim

101, Amundsen street, Yekaterinburg, 620016; 19, Mira street, Yekaterinburg, 620002

kim-angelina_95@mail.ruhttps://orcid.org/0000-0002-4227-7740СтерховЕ. В.SterkhovE. V.

Evgenii V. Sterkhov

101, Amundsen street, Yekaterinburg, 620016

ev.sterhov@mail.ruhttps://orcid.org/0000-0002-9796-5794ПетроваС. А.PetrovaS. A.

Sofia A. Petrova

101, Amundsen street, Yekaterinburg, 620016

danaus@mail.ruhttps://orcid.org/0000-0001-9856-4717ШиленкоГ. А.ShilenkoG. A.

Galina A. Shilenko

19, Mira street, Yekaterinburg, 620002

g_shilenko@mail.ruInstitute of Metallurgy of the Ural Branch of the Russian Academy of ScienceRussian FederationInstitute of Metallurgy of the Ural Branch of the Russian Academy of Sciences; Ural Federal University named after the First President of Russia B. N. YeltsinRussian FederationInstitute of Metallurgy of the Ural Branch of the Russian Academy of SciencesRussian FederationUral Federal University named after the First President of Russia B. N. YeltsinRussian Federation202431052025154510519Copyright © Ordinartsev D.P., Pechishcheva N.V., Estemirova S.K., Kim A.V., Sterkhov E.V., Petrova S.A., Shilenko G.A., 20252025Ординарцев Д.П., Печищева Н.В., Эстемирова С.Х., Ким А.В., Стерхов Е.В., Петрова С.А., Шиленко Г.А.Ordinartsev D.P., Pechishcheva N.V., Estemirova S.K., Kim A.V., Sterkhov E.V., Petrova S.A., Shilenko G.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/43

The paper presents a methodology for the synthesis of iron complex with hydrazine hydrate Fe(N2H4)xCly . The Fe(N2H4)xCly complex was investigated by X-ray phase analysis and scanning electron microscopy. Upon hydrolysis, the Fe(N2H4)xCly complex forms a composite sorbent, which is Fe3O4 in a shell of Fe(N2H4)xCly complex. The composite sorbent can be used to treat wastewater from Cr(VI) ions and is effective in the pH range of 2 to 12. Based on the adsorption and electrokinetic potential data, a conclusion about the nature of the terminal groups of the adsorbent was made, a scheme of the structure of its electrical double layer and the adsorption mechanism were proposed. Depending on the conditions, Cr(VI) can be adsorbed on the composite sorbent or reduced to Cr(III). The efficiency of the composite sorbent in the removal of Cr(VI) ions was tested on a sample of real wastewater.

В работе представлена методика синтеза комплекса железа с гидратом гидразина Fe(N2H4)xCly. Комплекс Fe(N2H4)xCly исследован методами рентгенофазового анализа и сканирующей электронной микроскопии. При гидролизе комплекс Fe(N2H4)xCly образует композитный сорбент, который представляет собой Fe3O4 в оболочке из комплекса Fe(N2H4)xCly. Композитный сорбент может быть использован для очистки сточной воды от ионов Cr(VI) и эффективен в диапазоне рН от 2 до 12. На основе полученных данных по адсорбции и электрокинетического потенциала сделан вывод о характере терминальных групп адсорбента, предложена схема строения его двойного электрического слоя и механизм адсорбции. В зависимости от условий Cr(VI) может адсорбироваться на композитном сорбенте или восстанавливаться до Cr(III). Эффективность композитного сорбента при удалении ионов Cr(VI) проверена на образце реальной сточной воды.

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