Work

Magnesium oxide nanomaterials for effective adsorption of congo red dye and fluoride ions from aqueous solutions

Year: 2024

Type: article

Abstract: This study investigates the synthesis of nanostructured magnesium oxide (MgO) using the auto-combustion method with urea (MgO-U), glycine (MgO-G), and citric acid (MgO-C) as fuels, followed by subsequent calcination . The selection of fuel plays a crucial role in determining the morphology of the nanostructures . X-ray diffraction (XRD) analysis confirms that the samples exhibit a well-crystallized structure with the desired phase and are free of impurities. Field emission scanning electron microscopy (FESEM) shows that MgO-U nanoparticles have diameters ranging from 10 to 20 nm, MgO-C nanoparticles from 60 to 80 nm, and MgO-G nanoparticles from 80 to 100 nm. These MgO nanomaterials are specifically engineered for adsorption applications, aimed at removing toxic organic dyes and fluoride ions from aqueous solutions. Results demonstrate that MgO-G nanoparticles exhibit superior adsorption activity compared to MgO-U and MgO-C nanoparticles, with maximum uptake capacities of 1429 and 14 mg/g, respectively. The adsorption processes adhere to second-order kinetic model. These findings highlight the potential application of the synthesized MgO nanoparticles for mitigating water pollution by adsorbing pollutants from aqueous media.

Source: Sustainable Chemistry for the Environment

DOI: 10.1016/j.scenv.2024.100180

Authors: Jyoti Prakash Dhal, Abhiram Panigrahi, Umakanta Pradhan, Bijnyan Ranjan Das

Institution: Odisha University of Technology and Research

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $1,400