| Literature DB >> 30267821 |
Melvin S Samuel1, Jayanta Bhattacharya1, Sankalp Raj1, Needhidasan Santhanam2, Hemant Singh1, N D Pradeep Singh3.
Abstract
The present study involves the adsorption of hexavalent Chromium(Cr(VI)) using chitosan grafted graphene oxide (CS-GO) nanocomposite in batch mode. The CS-GO nanocomposite material was prepared by ultrasonic irradiation technique. The CS-GO adsorbent was characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and Tunnelling electron microscopy (TEM), followed by Cr(VI) adsorption studies. The adsorption capacity of 104.16 mg/g was achieved at pH 2.0, in the contact time of 420 min. The adsorption process was described by the pseudo second order kinetic and Langmuir isotherm model. The nano-microstructural investigation validates the successful adsorption of Cr(VI) on CS-GO nanocomposite. The CS-GO material is recyclable up to 10 cycles with the minimum loss in adsorption capacity.Entities:
Keywords: Chitosan-graphene oxide; Chromium(VI); Isotherms; Kinetics; Thermodynamics; Ultrasonic irradiation
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Year: 2018 PMID： 30267821 DOI： 10.1016/j.ijbiomac.2018.09.170
Source DB: PubMed Journal: Int J Biol Macromol ISSN： 0141-8130 Impact factor: 6.953