Status : Verified
| Personal Name | Taguba, Manny Anthony M. |
|---|---|
| Resource Title | Synthesis of magnetic chitosan-MnFe2O4 by low-temperature combustion technique for the removal of Cu (II) and Pb (II) ions from aqueous solution |
| Date Issued | 6 January 2017 |
| Abstract | Synthesis of magnetic CMFO by low-temperature combustion technique for the removal of Cu (II) and Pb (II) ions from aqueous solution was investigated. Fourier transform infra-red spectroscopy analysis was conducted to detect functional groups and to characterize covalent bond in the prepared adsorbents. Additional information on morphology and surface composition of the magnetic adsorbents was acquired using Scanning electron-microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDS). Particle size analysis carried out using dynamic light scattering validated the nanostructure of the MFO and CMFO (average size of 172 nm and 203 nm respectively). Batch adsorption experiment of two adsorbents on the uptake of Cu (II) and Pb (II) showed better adsorption capacity of the composite magnetic adsorbent over the spinel ferrite adsorbent. Effect of contact time and temperature at 25, 35 and 45 °C were investigated on both adsorbents. The pseudo-first order, pseudo-second order, Elovich and intraparticle diffusion adsorption kinetics were used to describe the metal adsorption kinetic rate and to determine the controlling adsorption mechanism. Subsequently, thermodynamic parameters such as Gibb’s free energy change (ΔG°), enthalpy change (ΔH°) and entropy change (ΔS°) were determined. Freundlich, Langmuir, Tempkin and D-R models were employed to determine the appropriate isotherm for metals onto CMFO and MFO. |
| Degree Course | MS Environmental Engineering |
| Language | English |
| Keyword | adsorption; chitosan; manganese ferrite; nanoparticles |
| Material Type | Thesis/Dissertation |
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Category : I - Has patentable or registrable invention of creation.
Access Permission : Limited Access