Journal
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume 109, Issue -, Pages 520-528Publisher
INST CHEMICAL ENGINEERS
DOI: 10.1016/j.psep.2017.04.020
Keywords
Advanced oxidation process; Emerging contaminants; Catalytic ozonation; Metal oxide; MgO; Cytotoxicity
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Funding
- Tarbiat Modares University, Tehran, Iran
- Tehran University of Medical Sciences (TUMS), Institute for Environmental Research (IER) [11]
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The oxidation of acetaminophen (ACT) was investigated in the catalytic ozonation process (COPs) an ozonation process with modified MgO (m-MgO) nanoparticles as catalyst. The effect of main operational variables including solution pH and concentration of m-MgO, ACT and ozone concentration was investigated on ACT degradation in the COP. The complete degradation and 94% mineralization of 50 mg/L ACT obtained at the solution pH around 5, MgO concentration of 2 g/L and ozone concentration of 1.8 mgO(3)/min, within a reaction time of 30 min. The cytotoxicity fresh and COP-treated ACT solution was assessed using the human embryonic kidney (HEK) cultured cells. The results indicated that treating ACT solution in the m-MgO/O-3 process under optimum experimental conditions as compared to the fresh (untreated) ACT solution considerably increased the viability of HEK cells. Therefore, the COP with m-MgO nanoparticle as the catalyst is a promising and efficient process for the oxidation and detoxification of ACT as a model of emerging contaminants in the contaminated water. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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