Heterogeneous Fenton Degradation of Azo Dye On Aqueous Solution By the Bimetallic Hierarchical Zeolite Fecu-Hzsm-5
Date of Award
5-2022
Document Type
Thesis
Degree Name
Master of Science in Chemistry
First Advisor
Ronaldo M. Fabicon, PhD
Abstract
Bimetallic iron-copper catalysts incorporated in porous material have gained attention as it improves the Fenton reaction, specifically in treating organic pollutants in water and wastewater systems. The bimetallic Fenton system uses two metal catalysts, i.e., Fe and Cu, to decompose the hydrogen peroxide (H2O2) and yield hydroxyl radicals (∙OH) to degrade the organic compound. Several studies shed light on the effectiveness of hierarchical zeolites as a solid support for the bimetallic catalyst, addressing the metal sludge formation and acidic limitation of a classical homogeneous Fenton system. Hierarchical zeolites are three-dimensional aluminosilicate material with 2 or more pore size volumes that allow complete degradation of small and large organic pollutants in the heterogeneous Fenton system.
In this study, a hierarchical zeolite HZSM-5 was successfully synthesized through the simple and faster microwave-assisted route (i.e., one-pot soft templating method and the microwave digestion system). The particle size of HZSM-5 is 261.6±4.27 nm and its total pore volume is 0.66 cm3/g. Moreover, the iron and copper metals were effectively incorporated in the HZSM-5 by way of incipient wetness impregnation as iron and copper oxides species, confirmed by the X- ray diffraction analysis. The catalytic activity of the prepared FeCu-HZSM-5 samples were evaluated at different pH conditions and under the presence of a UV light against the azo dye, Acid Orange 7. The immediate dye removal of 0.1 mM of Acid Orange 7 was achieved at basic conditions, with 0.25 mL of 30 % H2O2 and 0.1 g/L FeCu-HZSM-5 catalyst. Furthermore, almost complete dye removal was achieved by all the FeCu-HZSM-5 with different Fe:Cu ratio, 3 days after the reaction time.
Keywords: Fenton-like reaction, hierarchical zeolite, incipient wetness impregnation, bimetallic system, wet peroxide oxidation, Acid orange 7
Recommended Citation
Erin, Bondoc N., (2022). Heterogeneous Fenton Degradation of Azo Dye On Aqueous Solution By the Bimetallic Hierarchical Zeolite Fecu-Hzsm-5. Archīum.ATENEO.
https://archium.ateneo.edu/theses-dissertations/734
