Authors
1
M.Sc., Student Research Committee, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
2
Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran. Social Determinants of Health Research Center, Department of Environmental Health Engineering, Faculty of Health, Birjand Univers
3
1. Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran 2. Department of Health Promotion and Education, School of Health, Birjand University of Medical Sciences, Birjand, Iran
4
Department of environmental health engineering, Mashhad university of medical sciences
Abstract
Background and Purpose: Removing pharmaceutical substances from wastewater is essential due to their high stability and toxic effects on humans and other living organisms before they enter the environment. Green-synthesized nanocomposites possess significant abilities to degrade pharmaceutical compounds and exhibit antibacterial effects. Therefore, this study aimed to investigate the photocatalytic and antibacterial effects of a green-synthesized magnetic nanocomposite.
Materials and Methods: In this experimental study, the photocatalytic process was conducted on a solution containing tetracycline to examine the photocatalytic capabilities of the synthesized nanocomposite. The antibacterial effect of the nanocomposite was also assessed on Gram-negative and Gram-positive bacteria using the broth dilution method.
Results: The results of the tetracycline antibiotic photocatalytic degradation test showed a removal rate of 87.95% under the following conditions: pH = 7, nanocomposite dose = 0.26 g/L, contact time = 54 min, and initial TC concentration of 10 mg/L. The minimum inhibitory concentration (MIC) of the synthesized nanocomposite was determined to be 1.25 mg/mL for Staphylococcus aureus bacteria and 5 mg/mL for Escherichia coli and Klebsiella bacteria. The minimum bactericidal concentration (MBC) against Escherichia coli and Staphylococcus aureus bacteria was found to be 5 mg/mL.
Conclusion: In addition to the inhibitory and bactericidal capabilities of the manganese-ferrite-based nanocomposite, it can be utilized as a powerful catalyst for the degradation of tetracycline antibiotics in aqueous solutions
Keywords