ABSTRACT
Zinc oxide nanoparticles are known for their
adsorption properties and multifunctional features that aid pollution
remediation. It finds its application in the removal of dyes and agricultural
pollutants such as pesticides. In this research, zinc oxide was synthesized by
precipitation method using zinc acetate and sodium hydroxide as precursors. The
synthesized zinc oxide nanoparticles were further modified using Oleic acid and
Aluminium oxide. The resulting nanoparticles were characterized by Scanning
Electron Microscope (SEM), XRay diffraction (XRD) and Fourier Transform
Infra-Red (FTIR). Adsorption applications of zinc oxide nanopartic/es for the
removal of glyphosate and cypermethrin pesticide pollutant were conducted The
conditions for the adsorption of pesticides under investigation by modified and
unmodified zinc oxide nanoparticles were: adsorbent dosage (0.1 g, 0. 2g, 0.4g
and 0.6g), contact time (10mins, 20mins, 30mins, 40mins, 50mins and 80mins),
concentration of the pesticide (20mL, 3.0mL, 4.0mL, 4.5mL and 6.5ml) and pH (3,
5,7, 9). The adsorbent was characterized before and after adsorption using
Fourier transform Infra-red (FTIR). Experimental data were tested with four
different isotherm model: Langmuir, Freundlich, Dubinin-Raduskevich and Temkin
isotherms. Results showed that the two pesticides, glyphosate and cypermethrin,
had better adsorption onto unmodified zinc oxide nanopartic/es followed by
organic modified nanoparticles. The highest adsorption occurred at pH 7 for
glyphosate and pH 9 for cypermethrin. The highest adsorption occurred at the
mass of 0. 6 g of the unmodified, inorganic modified and organic modified
nanoparticles. The adsorption rate increased with time, highest adsorption was
recorded at 80 mins for the three adsorbents.
ESTHER, O (2024). Adsorption Of Glyphosate And Cypermethrin Pesticides From Aqueous Solution Using Zinc Oxide Nanoparticles:- Oji, Esther O. Mouau.afribary.org: Retrieved Sep 08, 2024, from https://repository.mouau.edu.ng/work/view/adsorption-of-glyphosate-and-cypermethrin-pesticides-from-aqueous-solution-using-zinc-oxide-nanoparticles-oji-esther-o-7-2
ONYINYECHI, ESTHER. "Adsorption Of Glyphosate And Cypermethrin Pesticides From Aqueous Solution Using Zinc Oxide Nanoparticles:- Oji, Esther O" Mouau.afribary.org. Mouau.afribary.org, 02 Apr. 2024, https://repository.mouau.edu.ng/work/view/adsorption-of-glyphosate-and-cypermethrin-pesticides-from-aqueous-solution-using-zinc-oxide-nanoparticles-oji-esther-o-7-2. Accessed 08 Sep. 2024.
ONYINYECHI, ESTHER. "Adsorption Of Glyphosate And Cypermethrin Pesticides From Aqueous Solution Using Zinc Oxide Nanoparticles:- Oji, Esther O". Mouau.afribary.org, Mouau.afribary.org, 02 Apr. 2024. Web. 08 Sep. 2024. < https://repository.mouau.edu.ng/work/view/adsorption-of-glyphosate-and-cypermethrin-pesticides-from-aqueous-solution-using-zinc-oxide-nanoparticles-oji-esther-o-7-2 >.
ONYINYECHI, ESTHER. "Adsorption Of Glyphosate And Cypermethrin Pesticides From Aqueous Solution Using Zinc Oxide Nanoparticles:- Oji, Esther O" Mouau.afribary.org (2024). Accessed 08 Sep. 2024. https://repository.mouau.edu.ng/work/view/adsorption-of-glyphosate-and-cypermethrin-pesticides-from-aqueous-solution-using-zinc-oxide-nanoparticles-oji-esther-o-7-2