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Advanced Oxidation Processes for Mineralization of Amoxicillin in Aqueous Solutions
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Author(s): Maria Vasile Gonta (Moldova State University, Moldova), Larisa Mocanu (Moldova State University, Moldova)and Veronica Porubin-Schimbator (Moldova State University, Moldova)
Copyright: 2022
Pages: 26
Source title:
Handbook of Research on Water Sciences and Society
Source Author(s)/Editor(s): Ashok Vaseashta (International Clean Water Institute, USA & Transylvania University of Brasov, Romania & Academy of Sciences of Moldova, Moldova), Gheorghe Duca (Institute of Chemistry, Moldova State University, Moldova & Academy of Science of Moldova and Romanian Academy, Romania.)and Sergey Travin (Federal Research Center for Chemical Physics and N. N. Semenov of the Russian Academy of Sciences, Russia)
DOI: 10.4018/978-1-7998-7356-3.ch014
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Abstract
This chapter presents the study of kinetics and mechanisms of transformation of EC (antibiotics) by advanced oxidation processes (AOPs): Fenton (H2O2/Fe(II)), UV photolysis (UV/H2O2/TiO2), and combined methods. The application of AOPs is based on the formation of reactive species such as hydroxyl radical, superoxide radical, hydroperoxyl radical (HO2•), and peroxyradical (ROO•) and takes place by electron transfer reaction, proton extraction by the production of organic radicals (R•) and electrophilic addition to the double bond or aromatic ring. The main objective of this research includes the optimization of the physico-chemical parameters that influence the oxidation process of amoxicillin (AMX). The effect of EC degradation/mineralization was determined according to the concentrations of hydrogen peroxide and catalyst (Fe(II), TiO2), UV intensity, environmental pH, and others. EC transformation rates and speed constants of HO• bimolecular reactions with different emerging contaminants using AOPs have been determined by homogeneous and heterogeneous catalysis.
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