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dc.contributor.advisor El-Sayed, Mayyada Morcos, George 2020-09-20T11:44:57Z Summer 2020 en_US 2020-09-20
dc.description.abstract Novel amine-functionalized zirconium-based metal organic frameworks (MOFs) were solvothermally synthesized for the efficient and selective removal of Pb (II) in concentrated multi-component heavy metal ions systems. Pristine UiO-66 and UiO-67 MOFs were grafted with thiourea and amidinothiourea via a facile one-step post synthetic modification. Successful grafting was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The microporous amidinothiourea modified MOFs demonstrated excellent performance in their high maximum adsorption capacities of 246 and 367 mg.g-1, respectively, as well as their remarkable selectivity for Pb (II) ions in highly concentrated multi-ion solutions. This is, in addition, to their effective removal efficiencies which reached up to more than 95% at a high range of Pb (II) concentrations (25 - 250 ppm). Furthermore, the structural stability of the MOF crystals was maintained after adsorption and the MOF was completely regenerated for up to four cycles. Additionally, an as-synthesized Zr-based MOF was solvothermally synthesized for the efficient removal of Diclofenac sodium (DCF) from an aqueous medium. The as-synthesized microporous DUT-67 MOF was characterized by XRD and BET. Equilibrium studies revealed that the sorption process followed the Langmuir isotherm, which accordingly demonstrated a significant adsorption capacity of 484 mg.g-1, attaining maximum removal efficiencies of about 90% at 75 and 150 ppm DCF initial concentrations. Kinetically, the adsorption process followed the pseudo-second order and the intraparticle diffusion models. The Dubinin-Radushkevich model along with thermodynamic analysis suggested a physisorption interaction that is exothermic and spontaneous. en_US
dc.description.sponsorship American University in Cairo Virginia Commonwealth University en_US
dc.format.extent 125p. en_US
dc.format.medium theses en_US
dc.language.iso en en_US
dc.rights Author retains all rights with regard to copyright. en
dc.subject Metal Organic Frameworks en_US
dc.subject Wastewater Treatment en_US
dc.subject Lead en_US
dc.subject Diclofenac Sodium en_US
dc.subject UiO en_US
dc.subject DUT en_US
dc.subject.lcsh Thesis (M.S.)--American University in Cairo en_US
dc.title Development of functional metal organic frameworks for wastewater treatment en_US
dc.type Dataset en_US
dc.type Still Image en_US
dc.type Text en_US
dc.subject.discipline Nanotechnology en_US
dc.rights.access This item is restricted for 2 years from the date issued en_US
dc.contributor.department American University in Cairo. Dept. of Chemistry en_US
dc.embargo.lift 2022-09-20T11:44:57Z
dc.description.irb American University in Cairo Institutional Review Board approval is not necessary for this item, since the research is not concerned with living human beings or bodily tissue samples. en_US
dc.contributor.committeeMember Shoeib, Tamer
dc.contributor.committeeMember Nebsen, Marianne
dc.contributor.committeeMember Abd ElNaser, Anwar

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  • Theses and Dissertations [1863]
    This collection includes theses and dissertations authored by American University in Cairo graduate students.

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