Chitin-based magnetic composite for the removal of contaminating substances from aqueous mediaстатья
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Дата последнего поиска статьи во внешних источниках: 2 сентября 2020 г.
Аннотация:A method of obtaining multipurpose magnetic chitin, which combines the magnetic properties of magnetite and the adsorption properties of polysaccharide, was proposed. The possibility of using chitin-(CT) and chitosan (CS)-containing magnetic composites for the adsorption of inorganic ions Co (II) and Cr(VI) and organic substances (2- and 4-nitrophenols) from aqueous media was analyzed. It was shown that the adsorption capacity of magnetic chitin with respect to Co(II) and Cr(VI) ions reached 41 mg g–1 and 15 mg g–1, respectively. The maximum adsorption capacity for 4-nitrophenol (19 mg g–1 per CT-containing magnetic composite or 56 mg g–1 per chitin component) was about three times higher than for 2-nitrophenol. The obtained adsorbent Fe3O4/CT is environmentally friendly and reusable.