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Enhancement of Tetracycline Removal in Aquatic Environment by Nano-Pyrite//Ultrasound As a Sono-Fenton Process Publisher



Asemanbashiz E1 ; Sayyaf H1, 2
Authors
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Authors Affiliations
  1. 1. Environmental Health Engineering Lecturer, Alifard (SANICH) Institute of Applied Nscience and Technology, Hashtgerd, Iran
  2. 2. Department of Environmental Health Engineering, Tehran University of Medical Sciences, Health Assistant Department, South Tehran Health Center, Tehran, Iran

Source: Journal of Water and Environmental Nanotechnology Published:2023


Abstract

This study was conducted to introduce a new sono-Fenton system containing a nano-pyrite catalyst and hydrogen peroxide (HP) for the effective removal of tetracycline (TC) from aqueous solutions. The synthesized nano-pyrite was characterized through XRD, FTIR, FE-SEM, and EDX analyses. The best performance of the sono-Fenton nano-pyrite/HP system was observed under the condition of pH 3.0, TC 8.0 mg/L, HP 4.0 mM, ultrasound (US) 40 W, nano-pyrite 1.0 g/L, and 20 min with 93.1% removal efficiency. A comparison of the efficiency of the proposed system components confirmed the remarkable synergy between sono-catalysis and Fenton reactions due to the simultaneous application of nano-pyrite, HP, and US power. Meanwhile, US irradiation caused fluidization, turbulence, mass transfer, and nano-pyrite surface cleaning due to its cavitation and oscillation effects. According to the tracer test, the main agent of TC degradation in the sono-Fenton process was HO•. The results showed that the TC removal efficiency from the first to the fourth run reached 93.1% to 70.3%. This means that the recyclability of nano-pyrite has been very successful. Overall, the proposed sono-Fenton system was an efficient and sustainable process for the rapid and effective removal of pharmaceutical contaminants from water and wastewater. © 2023, Iranian Environmental Mutagen Society. All rights reserved.
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