Композитный сорбент на основе Fe₃O₄ с оболочкой Fe(N₂H₄)_xCl_y для удаления хрома (VI) из сточной воды

В работе представлена методика синтеза комплекса железа с гидратом гидразина Fe(N₂H₄)_xCl_y. Комплекс Fe(N₂H₄)_xCl_y исследован методами рентгенофазового анализа и сканирующей электронной микроскопии. При гидролизе комплекс Fe(N₂H₄)_xCl_y образует композитный сорбент, который представляет собой Fe₃O₄ в оболочке из комплекса Fe(N₂H₄)_xCl_y. 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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