Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/1189
Title: Fabrication of novel chitosan-humic acid-graphene oxide composite to improve adsorption properties for Cr(VI)
Authors: Parlayıcı, Şerife
Avcı, Ahmet
Pehlivan, Erol
Keywords: Humic Acid
Graphene Oxide
Chitosan
Cr(Vi) Removal
Kinetics
Composite
Hexavalent Chromium
Aqueous-Solutions
Removal
Membrane
Complexation
Optimization
Remediation
Nanosheets
Kinetics
Coal
Issue Date: 2019
Publisher: SPRINGER HEIDELBERG
Abstract: A novel chitosan-humic acid-graphene oxide (Cts-HA-GO) composite was produced and tested to remove hexavalent chromium (Cr(VI)) during the adsorption process. The percentage adsorption was 85.28% by using 200 ppm Cr(VI) and 2 g/L composite. Four hours of contact time was enough to remove Cr(VI) from the aquatic medium. The extent of adsorption of Cr(VI) on the surface of Cts-HA-GO composite was examined on the basis of increasing quantity of the composite. The functional group characterization and morphology of composite was characterized using scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. After reaching the equilibrium, the residual concentration of the Cr(VI) solution was measured with an UV-visible spectrophotometer. The results showed that the adsorption behaviour was in accordance with the Langmuir isotherm model, and the maximum adsorption capacity of Cr(VI) determined by using this model was 83.64 mg/g at the pH of 2. A pseudo-second-order model equation has justified the equilibrium between Cr(VI) and the composite for the kinetic studies.
URI: https://doi.org/10.1007/s12517-019-4828-8
https://hdl.handle.net/20.500.13091/1189
ISSN: 1866-7511
1866-7538
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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