Chromium adsorption studies on synthesized magnetite activated carbon nanocomposites

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dc.contributor.advisorManpreet Kaur
dc.contributor.authorJaskiran Kaur
dc.date.accessioned2018-05-27T03:44:14Z
dc.date.available2018-05-27T03:44:14Z
dc.date.issued2017
dc.description.abstractAdsorptive properties of synthesized magnetite activated carbon nanocomposites are investigated for the facile removal of Cr (VI) ions from water. Fe3O4 NPs and its nanocomposites with activated carbon were characterized by X-ray diffractiion pattern (XRD), FT-IR spectroscopy, Vibrating sample magnetometer (VSM), Transmission electron microscopy (TEM), Scanning electron microscopy (SEM) and Brunauer Emmet Teller (BET) surface area analysis as analytical tools. TEM images revealed the agglomerated spherical morphology of Fe3O4NPs and nanocomposites. A comparative analysis of the Fe3O4 NPs, nanocomposites and activated carbon for the removal of Cr (VI) ions from water was carried out by batch method and Cr (VI) content was estimated spectrophotometrically. The effect of operating parameters including adsorbent dose, temperature, contact time, pH and initial metal ion concentration of Cr (VI) were studied. Optimum pH for adsorption was 2. Values of ∆Go, ∆H˚ and ∆S˚ were found to be negative for all adsorbents, indicating exothermic and spontaneous nature of adsorption process The trend for the Cr (VI) ions percentage removal in the ascending order was Fe3O4 NPs<nanocomposites <activated carbon. Among the nanocomposites, The Cr (VI) removal capacity increased with increase in activated carbon content. Langmuir and Freundlich isotherms fitted the data better than D-R isotherms. The advantage of nanocomposites is enhancement of adsorption potential due to presence of Fe3O4 NPs along with activated carbon and their magnetic separation after adsorptionen_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810047766
dc.keywordsNanocomposite, Adsorption, Cr (VI), Magnetic properties, Desorptionen_US
dc.language.isoenen_US
dc.pages65en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemChromium adsorption studies on synthesized magnetite activated carbon nanocompositesen_US
dc.subChemistryen_US
dc.subjectnullen_US
dc.themeChromium adsorption studies on synthesized magnetite activated carbon nanocompositesen_US
dc.these.typeM.Scen_US
dc.titleChromium adsorption studies on synthesized magnetite activated carbon nanocompositesen_US
dc.typeThesisen_US
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