Mercury adsorption on functionalized carbon nanotubes

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dc.contributor.advisorKiran Jeet
dc.contributor.authorNupur
dc.date.accessioned2016-11-08T09:16:24Z
dc.date.available2016-11-08T09:16:24Z
dc.date.issued2016
dc.description.abstractHeavy metal contaminations possess serious threat to life and livelihood of people around the globe. Studies aimed to employ carbon based nanomaterials to decontaminate water from heavy metal ions of mercury. For this thiol functionalized carbon nanotubes (CNTs) were synthesized by first oxidizing the tubes and then reacting them further with thionyl chloride in a sequence. Then the successful functionalization of the CNTs was confirmed using Fourier Transform Infra-red (FT-IR) spectroscopy, Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). Effect of different parameters like adsorbent dosage, contact time, pH and temperature on different adsorbents capacity to remove Hg(II) ions from solution was studied and a comparative data was collected. The thiol functionalized CNTs showed better adsorptions for Hg(II) ions as compared to carboxylic functionalized CNTs. Values of ∆Ho and ∆So were also calculated and found to be positive, indicates that adsorption of mercury ions on CNTs surface was an endothermic process. Then the maximum adsorption capacity was investigated for all the adsorbents using equilibrium isotherms, such as Langmuir and freundlich, the maximum adsorption capacity of SWCNTs-SH for Hg (II) ion removal was achieved at 111.12 mg/g and for MWCNT-SH it was 83.34 mg/g by fitting with Langmuir isotherm model.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/84333
dc.language.isoenen_US
dc.research.problemMercury adsorption on functionalized carbon nanotubesen_US
dc.subPhysicsen_US
dc.subjectPhysicsen_US
dc.subjectcarbon nanotubesen_US
dc.subjectMathematicsen_US
dc.subjectThermodynamic parametersen_US
dc.subjectMercury adsorptionen_US
dc.subjectAdsorption isothermsen_US
dc.themecarbon nanotubesen_US
dc.titleMercury adsorption on functionalized carbon nanotubesen_US
dc.typeThesisen_US
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