Chitosan based composite sorbents for arsenic removal

Journal Article · Tue Jan 15 04:00:00 EST 2019 · Russian Chemical Bulletin

DOI:https://doi.org/10.1007/S11172-019-2409-3· OSTI ID:22943309

Shlyk, D. Kh.; Voit, A. V. ^[1]; Barinov, N. N. ^[2]

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1. Far East Branch of the Russian Academy of Sciences, Institute of Chemistry (Russian Federation)
2. Far East Branch of the Russian Academy of Sciences, Far East Geological Institute (Russian Federation)

The possibilities of using chitosan and its composites with transition metal oxides for arsenic removal from solutions with low concentrations are discussed. Methods for the formation of composite sorbents based on chitosan and molybdenum in a composition with a carbon fiber providing improved physical and chemical properties with respect to the recovered component are considered. The sorption properties of the obtained materials under dynamic conditions for the purification of solutions from arsenic are compared. It is shown that the preliminary modification of the carbon fiber with chitosan by ionic gelation using sulfate ion and then by adsorption with molybdate ion leads to the production of an efficient sorption material that provides the purification of 1600 column volumes of an arsenic solution at an initial concentration of 105 μg L{sup –1} to a maximum permissible concentration of 50 μg L{sup –1}. The calculation methods show that the gel ability of sulfate and molybdate ions is approximately the same.

• OSTI ID: 22943309
• Journal Information: Russian Chemical Bulletin, Journal Name: Russian Chemical Bulletin Journal Issue: 1 Vol. 68; ISSN RCBUEY; ISSN 1066-5285
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADSORPTION
AMINO ACIDS
CARBON FIBERS
CHEMICAL PROPERTIES
DENSITY FUNCTIONAL METHOD
GELATION
GELS
MAXIMUM PERMISSIBLE CONCENTRATION
MODIFICATIONS
MOLYBDATES
MOLYBDENUM
OLIGOSACCHARIDES
PURIFICATION
SIMULATION