Abstract
The effectiveness of MgO nanostructures for removing indigo carmine (IC) dye from an aqueous solution is demonstrated in this article. The nanomaterials were synthesized using MgCl2.2H2O and NaOH in a medium containing Pimpinella anisum extract. The microstructure of the samples was investigated using XRD, SEM, EDX, BET, and FTIR. Additionally, the IC dye uptake and adsorption processes were investigated using a MgO sorbent. To synthesize the MgO1 and MgO2 materials, the adsorption kinetics of IC dye, the starting pH of IC dye solution, and contact time were optimized. The maximal theoretical adsorption efficiency of the MgO1 and MgO2 adsorbents for IC dye was 559.2 and 492.6 mg/g, respectively, according to the Langmuir isotherm adsorption model. Further, recycling the MgO1 adsorbent proved conceivable due to its ease of collection and re-use following five adsorption-regeneration cycles.
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