Removal of chromium(VI) from aqueous solution using chitosan doped with carbon nanotubes
Yükleniyor...
Dosyalar
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This work investigates the adsorption of chromium ions on chitosan doped with multiwalled carbon nanotubes (Cht-MWCNT). The effects of initial pH, amount of Cht-MWCNT, temperature, contact time, and the initial concentration of Cr (VI) were investigated during the equilibrium and kinetic studies. The equilibrium time was found to be 60 min. Adsorption isotherms of Cr (VI) on Cht-MWCNT was determined and correlated with Langmuir, Freundlich, Scatchard and D-R isotherm equations. The adsorption data showed that adsorption of Cr (VI) was fitted by Langmuir isotherm model and pseudo-second-order kinetics model. Under optimum conditions, maximum adsorption capacity of Cr (VI) determined by Langmuir model were enhanced 26.14 mg/g. Thermodynamic parameters such as Delta G degrees, Delta H degrees, Delta S degrees were calculated and the interaction of Cr (VI) with Cht-MWCNT was found to be endothermic and spontaneous in nature. (C) 2019 Elsevier Ltd. All rights reserved.
Açıklama
International Congress on Semiconductor Materials and Devices (ICSMD) -- AUG 17-19, 2017 -- Selcuk Univ, Konya, TURKEY
Anahtar Kelimeler
Chitosan, MWCNT, isotherm, kinetic, thermodynamic
Kaynak
MATERIALS TODAY-PROCEEDINGS
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
18
Sayı
Künye
Parlayıcı, Ş., Pehlivan, E. (2019). Removal of Chromium (VI) from Aqueous Solution Using Chitosan Doped with Carbon Nanotubes. Materials Today: Proceedings, 18, 1978-1985.
