A researcher who seeks to improve his expertise. Address: Department of Industrial Chemistry, Faculty of Physical Sciences, University of Ilorin, Ilorin, Nigeria.
Solvent extraction studies using Cyanex®272 for the extraction of zinc from spent galvanized zinc... more Solvent extraction studies using Cyanex®272 for the extraction of zinc from spent galvanized zinc-ash after leaching in hydrochloric acid (HCl) is reported. Elemental analysis of the spent galvanized material by X-ray fluorescence (XRF) showed the percentage content of zinc to be 93.6 % with ZnO being the major compound detected by X-ray diffraction (XRD) method. The leaching solution by 1 mol/L HCl examined by Aquamate Thermo-Electron Corporation UV-Visible spectrophotometer contains 2991 mg/L zinc with other elements: Mn, Cu, Zn, Cr, Cd and Pb occuring from low to trace levels (≤ 1%). The results of solvent extraction of zinc by 0.25 mol/L Cyanex®272 in kerozene yielded 85.21 % extraction efficiency within 25 minutes at 27 ± 2oC. At optimal conditions, the study showed that a phase ratio of 1:1 for the organic : aqueous phase extracted 96.6 % of the total zinc into the organic phase at pH 4, of which 98 % of the loaded organic phase was quantitatively stripped by 0.1 mol/L HCl sol...
The bleaching efficiency of activated carbon prepared from teak leaves was investigated for the r... more The bleaching efficiency of activated carbon prepared from teak leaves was investigated for the removal of pigments from palm oil. The adsorbents were activated using KOH and FeCl3 as activating agents. The effects of adsorbent dosage (2% - 6 %), contact time (15 min. – 90 min.) and temperature (30 °C – 80 °C) were studied, while the unactivated adsorbent was used as standard. The ash content, moisture content, volatile matter content, and fixed carbon content were determined and the adsorptive bleaching of palm oil investigated using 1.2 g activated carbon with 20 g crude palm oil. Bleaching efficiency was observed to be 93.09 % and 96.68 % for the KOH and FeCl3 activated adsorbent respectively, while the unactivated adsorbent was observed to have a bleaching efficiency of 89.21 %. The optimum bleaching efficiency was observed at a temperature of 70 °C, adsorbent dosage of 6 %, and contact time of 90 min. Results obtained suggests that teak leaves can be a source of low-cost adsorb...
The interaction of eosin B dye from aqueous solution with MIL-100(Fe) and functionalized MIL-100(... more The interaction of eosin B dye from aqueous solution with MIL-100(Fe) and functionalized MIL-100(Fe) metal–organic frameworks (MOFs) is reported in this study. MIL-100(Fe) was prepared and functionalized with thioglycolic acid (TH) and ethylenediammine (ED) separately by incorporating the thiol (–SH) and the amine (–NH 2 ) group of the functionalizing agents into the open metal sites of the MIL-100(Fe) to obtain the acidic (TH-MIL-100) and basic (ED-MIL-100) forms of the MOF respectively. Characterization of the MOFs was done by melting point analysis, elemental analysis, spectroscopic techniques, scanning electron microscopy (SEM), and powdered X-ray diffraction (PXRD) analysis. The adsorption experiments were carried out at different conditions such as pH, adsorbent dosage, contact time, temperature, and initial concentration of the dye to estimate the optimum conditions and the maximum adsorption capacities. Adsorption capacities were observed to increase in the order of ED-MIL-1...
Solvent extraction studies using Cyanex®272 for the extraction of zinc from spent galvanized zinc... more Solvent extraction studies using Cyanex®272 for the extraction of zinc from spent galvanized zinc-ash after leaching in hydrochloric acid (HCl) is reported. Elemental analysis of the spent galvanized material by X-ray fluorescence (XRF) showed the percentage content of zinc to be 93.6 % with ZnO being the major compound detected by X-ray diffraction (XRD) method. The leaching solution by 1 mol/L HCl examined by Aquamate Thermo-Electron Corporation UV-Visible spectrophotometer contains 2991 mg/L zinc with other elements: Mn, Cu, Zn, Cr, Cd and Pb occuring from low to trace levels (≤ 1%). The results of solvent extraction of zinc by 0.25 mol/L Cyanex®272 in kerozene yielded 85.21 % extraction efficiency within 25 minutes at 27 ± 2oC. At optimal conditions, the study showed that a phase ratio of 1:1 for the organic : aqueous phase extracted 96.6 % of the total zinc into the organic phase at pH 4, of which 98 % of the loaded organic phase was quantitatively stripped by 0.1 mol/L HCl sol...
The bleaching efficiency of activated carbon prepared from teak leaves was investigated for the r... more The bleaching efficiency of activated carbon prepared from teak leaves was investigated for the removal of pigments from palm oil. The adsorbents were activated using KOH and FeCl3 as activating agents. The effects of adsorbent dosage (2% - 6 %), contact time (15 min. – 90 min.) and temperature (30 °C – 80 °C) were studied, while the unactivated adsorbent was used as standard. The ash content, moisture content, volatile matter content, and fixed carbon content were determined and the adsorptive bleaching of palm oil investigated using 1.2 g activated carbon with 20 g crude palm oil. Bleaching efficiency was observed to be 93.09 % and 96.68 % for the KOH and FeCl3 activated adsorbent respectively, while the unactivated adsorbent was observed to have a bleaching efficiency of 89.21 %. The optimum bleaching efficiency was observed at a temperature of 70 °C, adsorbent dosage of 6 %, and contact time of 90 min. Results obtained suggests that teak leaves can be a source of low-cost adsorb...
The interaction of eosin B dye from aqueous solution with MIL-100(Fe) and functionalized MIL-100(... more The interaction of eosin B dye from aqueous solution with MIL-100(Fe) and functionalized MIL-100(Fe) metal–organic frameworks (MOFs) is reported in this study. MIL-100(Fe) was prepared and functionalized with thioglycolic acid (TH) and ethylenediammine (ED) separately by incorporating the thiol (–SH) and the amine (–NH 2 ) group of the functionalizing agents into the open metal sites of the MIL-100(Fe) to obtain the acidic (TH-MIL-100) and basic (ED-MIL-100) forms of the MOF respectively. Characterization of the MOFs was done by melting point analysis, elemental analysis, spectroscopic techniques, scanning electron microscopy (SEM), and powdered X-ray diffraction (PXRD) analysis. The adsorption experiments were carried out at different conditions such as pH, adsorbent dosage, contact time, temperature, and initial concentration of the dye to estimate the optimum conditions and the maximum adsorption capacities. Adsorption capacities were observed to increase in the order of ED-MIL-1...
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