Studying the effect of adsorption process variables on adsorption capacity and removal percentage of toluene from aqueous solutions by magnetic hydroxyapatite nanoparticles

Articles in Press

Document Type : Original Article

Authors

1 Ceramic department, materials and energy research center, Karaj, Alborz

2 Materials and Energy Research Center

3 Technical Faculty, Shahrood University of Technology

4 Ceramic department, materials and energy research center, Karaj, Iran

5 materials and energy research center, Karaj, Iran

10.22034/ijche.2023.376256.1261

Abstract

The presence of toluene in industrial effluents is one of the most dangerous environmental pollutants, which is considered one of the factors that destroy the environment. There are several methods for removing toluene from aqueous solutions. One of the methods to remove toluene from aqueous solutions is adsorption. In recent years, magnetic hydroxyapatite has been proposed as an adsorbent for the separation of pollutants in aqueous solutions, due to its magnetic separation properties and the possibility of reuse. In this research, magnetic hydroxyapatite was synthesized using co-precipitation method and then toluene adsorption was investigated using magnetic hydroxyapatite nanoparticles. The structure and phase analysis of the synthesized nano-adsorbent were investigated using scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively. An UV spectrophotometer was used to investigate the change in toluene concentration, and a scanning electron microscope and X-ray diffraction spectroscopy were used to investigate the microstructure and chemical composition before and after toluene adsorption. In this research, with using magnetic hydroxyapatite nanoparticles, the highest percentage of toluene removal and the highest adsorption capacity was 6.75% and 980 mg/g, respectively. The results showed that the synthesized magnetic hydroxyapatite nanoparticles have the ability to adsorb toluene from aqueous solutions and can be introduced as an adsorbent of this organic compound.

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Iranian Chemical Engineering Journal

Articles in Press, Accepted Manuscript
Available Online from 20 July 2023

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