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Antibacterial Properties and Sonocatalytic Efficiency of Zinc Oxide Nanoparticles in the Degradation of Reactive Red 198 Dye from Aqueous Solutions
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SeyedehNastaran Asadzadeh1    , Mobin Yasini *2 , Mohadse Heydari1 |
1- North Khorasan University of Medical Sciences, North Khorasan University of Medical Sciences
2- North Khorasan University of Medical Sciences, North Khorasan University of Medical Sciences , Yasinimobin18@gmail.com |
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Abstract: (18 Views) |
Background and Objective: Reactive Red 198, a monoazo dye, is one of the most common synthetic dyes used in textile industries. Its discharge into wastewater leads to serious environmental problems due to its stability and resistance to biodegradation. Advanced oxidation processes (AOPs) are powerful methods with simple operation and high efficiency for the degradation of persistent organic compounds in the environment. This study aimed to evaluate the sonocatalytic and antibacterial performance of zinc oxide (ZnO) nanoparticles for the degradation of Reactive Red 198 dye from aqueous solutions.
Materials and Methods: This experimental study was conducted on a laboratory scale. The effects of key parameters, including solution pH, initial catalyst concentration, oxidant dosage, and initial dye concentration, on the removal efficiency of Reactive Red 198 were investigated. The dye concentration was measured at a wavelength of 518 nm using a UV–Vis spectrophotometer. Under optimal conditions, the performance of various catalytic processes was compared, and the antibacterial activity of the synthesized ZnO nanoparticles was also assessed.
Results: The optimal conditions were obtained at an initial dye concentration of 15 mg/L, peroxymonosulfate concentration of 60 mg/L, ZnO nanoparticle dosage of 2 g/L, and pH = 4. Under these conditions, a maximum dye removal efficiency of 89.69% was achieved after 45 minutes. Moreover, the ZnO nanoparticles exhibited significant antibacterial activity against both Gram-negative and Gram-positive bacteria.
Conclusion: The incorporation of ZnO nanoparticles into the sonocatalytic process offers strong oxidation capability, high efficiency, and effective decomposition of refractory organic pollutants, making it a promising method for the removal of Reactive Red 198 from textile wastewater. Furthermore, ZnO nanoparticles demonstrate potential for controlling and eliminating resistant bacterial strains in environmental applications. |
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| Keywords: Antibacterial, sonocatalyst, zinc oxide nanoparticles, reactive red 198 |
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Type of Study: Original |
Subject:
Special
Received: 2026/02/4 | Accepted: 2024/07/31
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