Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/19174
Title: Fabrication of magnetic cobalt ferrite nanocomposites: an advanced method of removal of toxic dichromate ions from electroplating wastewater
Authors: Verma B.
Balomajumder, Chandrajit
Published in: Korean Journal of Chemical Engineering
Abstract: Magnetic cobalt ferrites (CoFe O ) were synthesized by sol-gel method. These nanoparticles were ultra-sonicated with surface modified multi-walled carbon nanotubes (SM-MWCNTs) to form CoFe O /SM-MWCNTs nanocomposites. The as-prepared materials were used as an adsorbent for the removal of hexavalent chromium (Cr(VI)) arising from the presence of dichromate ions (Cr O ) in the electroplating effluent. The synthesized nanocomposites were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-Ray diffraction (XRD), Fourier transmission infrared spectroscopy (FT-IR), raman spectroscopy, thermo-gravimetric analysis (TGA), and zeta analyzer. The effect of the environmental chemistry of the solution on the adsorption has been discussed. The adsorption isotherm of Cr(VI) adsorption onto the as-synthesized CoFe O /SM-MWCNTs best fitted the Langmuir Adsorption Isotherm model. The high adsorption capacity of 100mg/g was achieved at 40°C under optimized conditions. Besides, the magnetic properties of synthesized CoFe O /SM-MWCNTs nanocomposites allow them to separate from the aqueous solution by magnetization easily. Even after seven consecutive adsorption-desorption cycles, the CoFe O /SM-MWCNTs nanocomposites presented an efficiency loss of less than 20% for the removal of Cr(VI) ions. This study clearly shows that cobalt nanocomposites are promising candidates in environmental applications. 
Citation: Korean Journal of Chemical Engineering(2020), 37(7): 1157-1165
URI: https://doi.org/10.1007/s11814-020-0516-3
http://repository.iitr.ac.in/handle/123456789/19174
Issue Date: 2020
Publisher: Springer
Keywords: Cobalt Ferrites
Electroplating
Heavy Metal
Nanocomposites
Nanotubes
ISSN: 2561115
Author Scopus IDs: 57191976974
35615087500
Author Affiliations: Verma, B., Department of Chemical Engineering, IIT Roorkee, Roorkee, 24766, India
Balomajumder, C., Department of Chemical Engineering, IIT Roorkee, Roorkee, 24766, India
Corresponding Author: Verma, B.; Department of Chemical Engineering, India; email: bverma@ch.iitr.ac.in
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.