Suwaibatu, Mamman
(2021)
Development Of Nano-Sized Β-Cyclodextrin Polymers As An
Adsorbent For The Effective Removal
Of Phenolic Compounds From Aqueous Samples.
PhD thesis, Perpustakaan Hamzah Sendut.
Abstract
The use of cyclodextrin-based materials as adsorbents for removing different
contaminants is cutting-edge research that has caught the attention of many researchers
worldwide. In this research, magnetite methacrylic acid-functionalized β-cyclodextrin
(Fe3O4@MAA-βCD), magnetic molecularly imprinted polymer based on methacrylic
acid-functionalized β-cyclodextrin (MMIP MAA-βCD), magnetic non-molecularly
imprinted polymer based on methacrylic acid-functionalized β-cyclodextrin (MNIP
MAA-βCD, magnetic molecularly imprinted polymer based on methacrylic acid
(MMIP MAA) and magnetic non-molecularly imprinted polymer based on
methacrylic acid (MNIP MAA) were successfully synthesized for the removal of 2,4-
dichlorophenol (2,4-DNP), 2,4-dinitrophenol (2,4-DNP) and bisphenol A (BPA) from
aqueous media. The adsorbents were characterized by Fourier transform infrared
spectroscopy (FTIR), scanning electron microscope (SEM), transmission electron
microscopy (TEM), vibrating sample magnetometer (VSM), Brunauer-Emmett-Teller
(BET), thermogravimetric analyzer (TGA) and X-ray Diffraction (XRD). 1H NMR
spectroscopy was used to characterize the MAA-βCD and BPA-MAA-βCD inclusion
complex. Several variables influencing the adsorption efficiency of the selected
phenolic compound have been analyzed in depth. Fe3O4@MAA-βCD gave the optimal
removal amount of the studied phenolic compounds studied at pH 2 for 2,4-DNP, pH
7 for 2,4-DCP, and pH 6 for BPA. While the contact time, initial concentration, the
adsorbent dose was set at 60 min, 10 mg/L, and 20 mg, respectively.
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