Document Type : Original Article

Authors

• Tahereh Safabakhsh ¹
• Hamidreza Pourzamani ²

¹ Department of Environmental Health Engineering, School of Health; Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran

² Department of Environmental Health Engineering, School of Health; Environment Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Aims: The purpose of this study was to investigate adsorption isotherms of removing bisphenol A (BPA) from aqueous solutions using magnetic nanoparticles Fe₃O₄ and SiO₂. BPA is an endocrine disrupting chemical that has caused great concern because of its potential risk to human health. Materials and Methods: The combined of magnetic nanoparticles Fe₃O₄ and SiO₂ were applied to remove BPA from aqueous solution at a dose of 2 g/L. Isotherm Fitting Tool software was used for isotherm study in contact time 20 min, the initial concentration of BPA 0–10 (interval 1 mg/L), and pH 5. Results: The maximum adsorption efficiency was found to be 55%. The results of our experiments showed that maximum adsorption efficiency was achieved at t = 20 min and pH 5. Conclusion: The isotherm study showed that Langmuir isotherm described the equilibrium adsorption data better than other isotherms alternative.

Keywords

• Adsorption
• aqueous solution
• bisphenol A
• magnetic nanoparticles
• silica nanoparticles