Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction

Immobilization of chitosan on modified silica surface has been carried out by aminomethylation (Mannich reaction). The obtained chitosan–silica (CSS) composite was characterized by the Fourier transform infrared spectroscopy, specific surface area and pore diameter. The concentration of chitosan in...

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Main Authors: T.M. Budnyak, V.A. Tertykh, E.S. Yanovska, D. Kołodyńska, A. Bartyzel
Format: Article
Language:English
Published: Hindawi - SAGE Publishing 2015-08-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1260/0263-6174.33.6-8.645
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spelling doaj-a77c282de38d472d90d613bf6baf1b362021-04-02T13:24:33ZengHindawi - SAGE PublishingAdsorption Science & Technology0263-61742048-40382015-08-013310.1260/0263-6174.33.6-8.645Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich ReactionT.M. Budnyak0V.A. Tertykh1E.S. Yanovska2D. Kołodyńska3A. Bartyzel4Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17 General Naumov Street, 03164 Kyiv, UkraineChuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17 General Naumov Street, 03164 Kyiv, UkraineKyiv National Taras Shevchenko University, 64 Volodymyrska Street, 01033 Kyiv, UkraineMaria Curie-Skłodowska University, 2 Maria Curie Sklodowska Sq., 20-031 Lublin, Poland.Maria Curie-Skłodowska University, 2 Maria Curie Sklodowska Sq., 20-031 Lublin, Poland.Immobilization of chitosan on modified silica surface has been carried out by aminomethylation (Mannich reaction). The obtained chitosan–silica (CSS) composite was characterized by the Fourier transform infrared spectroscopy, specific surface area and pore diameter. The concentration of chitosan in the composite was determined by the thermogravimetric method. The effects of various parameters, such as pH, contact time, initial concentration of the metal on the adsorption of V(V), Mo(VI) and Cr(VI) oxoanions by the CSS composite were investigated in comparison with the initial components: chitosan, amino-containing silica and silica. The maximum adsorption capacities of composite with respect to V(V) and Mo(VI) oxoanions at pH 2.5 were 1.6 and 1.5 mmol/g, respectively, and 0.5 mmol/g towards Cr(VI) in the neutral medium.https://doi.org/10.1260/0263-6174.33.6-8.645
collection DOAJ
language English
format Article
sources DOAJ
author T.M. Budnyak
V.A. Tertykh
E.S. Yanovska
D. Kołodyńska
A. Bartyzel
spellingShingle T.M. Budnyak
V.A. Tertykh
E.S. Yanovska
D. Kołodyńska
A. Bartyzel
Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction
Adsorption Science & Technology
author_facet T.M. Budnyak
V.A. Tertykh
E.S. Yanovska
D. Kołodyńska
A. Bartyzel
author_sort T.M. Budnyak
title Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction
title_short Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction
title_full Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction
title_fullStr Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction
title_full_unstemmed Adsorption of V(V), Mo(VI) and Cr(VI) Oxoanions by Chitosan–Silica Composite Synthesized by Mannich Reaction
title_sort adsorption of v(v), mo(vi) and cr(vi) oxoanions by chitosan–silica composite synthesized by mannich reaction
publisher Hindawi - SAGE Publishing
series Adsorption Science & Technology
issn 0263-6174
2048-4038
publishDate 2015-08-01
description Immobilization of chitosan on modified silica surface has been carried out by aminomethylation (Mannich reaction). The obtained chitosan–silica (CSS) composite was characterized by the Fourier transform infrared spectroscopy, specific surface area and pore diameter. The concentration of chitosan in the composite was determined by the thermogravimetric method. The effects of various parameters, such as pH, contact time, initial concentration of the metal on the adsorption of V(V), Mo(VI) and Cr(VI) oxoanions by the CSS composite were investigated in comparison with the initial components: chitosan, amino-containing silica and silica. The maximum adsorption capacities of composite with respect to V(V) and Mo(VI) oxoanions at pH 2.5 were 1.6 and 1.5 mmol/g, respectively, and 0.5 mmol/g towards Cr(VI) in the neutral medium.
url https://doi.org/10.1260/0263-6174.33.6-8.645
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