Remediation of Cd (II) ions from aqueous solution using carbon based nano hybrid

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Date
2021
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Punjab Agricultural University, Ludhiana
Abstract
The present study focuses on preparation of carbon based nano hybrid which act as an adsorbent for removal of Cd (II) from aqueous solution. Synthesis of graphene oxide was carried out by modified Hummer’s method. Fuctionalization of multiwall carbon nanotubes was carried out with the help of refluxing. Magnetic graphene oxide nanoparticles were formed with co-precipitation of iron nanoparticles on the surface of graphene. Graphene oxide multiwalled carbon nano tube hybrid (GO- MWCNT) was prepared by providing mechanical shear to functionalized carbon nanotube and graphene oxide powder in acid solution. Morphology, structure of synthesized materials were studied using high resolution imaging techniques such as Transmission Electron Microscope (TEM), Scanning Electron Microscope (SEM) and X Ray Diffraction (XRD) and spectroscopy techniques such as Ultraviolet Visible spectroscopy (UV-VIS) and Fourier Transform Infrared Spectroscopy (FT-IR). The maximum adsorption capacity for Cd (II) was obtained to be 50.00, 47.61, 45.45 and 41.66 mg/g for MGO, GO, C-MWCNTs and GO-C-MWCNTs respectively at optimum condition (i.e. pH = 6, contact time = 20 minutes and temperature = 30°C). MGO has high efficiency to remove Cd (II) ion from contaminated water and also other adsorbents such as GO, C-MWCNTs and GO-C-MWCNTs and shows great potential in the field of water decontamination. Thermodynamic parameters indicate that the adsorption processes is spontaneous and exothermic.
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Inderpreet Kaur (2021). Remediation of Cd(II) ions from aqueous solution using carbon based nano hybrid (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.
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