Efficient Removal of Florasulam Herbicide from Water by Carboxymethyl Cellulose-Magnetic Graphene Oxide Nanocomposites

Document Type : Original Article

Authors

1 Department of Pesticide Chemistry and Technology, Faculty of Agriculture, 21545-El-Shatby, Alexandria University, Alexandria, Egypt.

2 Mammalian Toxicology Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, 21616-El-Sabahia, Alexandria, Egypt.

Abstract

In this work, carboxymethyl cellulose-magnetic graphene oxide nanoparticles (CMC-MGO-NPs) were prepared for the removal of florasulam herbicide from aqueous media. The nanoparticles were characterized using Scanning Electron Microscopy (SEM), Dynamic Light Scattering (DLS), and Fourier Transform Infrared Spectroscopy (FTIR). Firstly, graphene oxide (GO) was obtained from graphite and then combined with Fe3O4 to form magnetic graphene oxide nanoparticles (MGO-NPs). Secondly, MGO-NPs reacted with carboxymethyl cellulose (CMC) in the presence of calcium chloride (CaCl2) as a crosslinking agent producing CMC-MGO-NPs. Throughout the optimization of the removal process, several significant factors including pesticide concentration, adsorbent amount, temperature, pH, agitation time, and ionic strength were studied in detail using the Plackett–Burman design. The results showed that the maximum removal efficiency of florasulam reached 93.82% at an adsorbent amount of 75 mg, pH 5, agitation time of 30 min, and 40ºC. In addition, the adsorption capacity and enrichment factor were 1.15 mg/g and 0.06 ug/mL, respectively. Considering the high removal efficiency, adsorption capacity, and enrichment factor, CMC-MGO-NPs could be promising adsorbents for removing pesticide residues from wastewater.

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The Egyptian Science Magazine
Volume 11, Issue 1
December 2024
Pages 53-61

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