Chitin-based magnetic composite for the removal of contaminating substances from aqueous media

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...

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Bibliographic Details
Published in:Russian chemical bulletin 2020-06, Vol.69 (6), p.1157-1164
Main Authors: Samoilova, N. A., Krayukhina, M. A.
Format: Article
Language:English
Subjects:
Adsorption
Aqueous solutions
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Chitin
Chitosan
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Inorganic Chemistry
Iron oxides
Magnetic properties
Nitrophenol
Organic Chemistry
Polysaccharides
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Summary: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 Fe 3 O 4 /CT is environmentally friendly and reusable.
ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-020-2883-7