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Study of agrochemical degradation paraquat, sodium-metham and carbaryl by Electrochemical Advanced Oxidation Process (EAOP) using gas diffusion electrode modified with bimetallic oxides

Grant number: 17/23464-3
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): July 01, 2018
Effective date (End): July 31, 2023
Field of knowledge:Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
Principal Investigator:Marcos Roberto de Vasconcelos Lanza
Grantee:Matheus Schiavon Kronka
Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies, AP.TEM
Associated scholarship(s):21/10973-2 - Application of a novel gas diffusion electrode for terbuthylazine removal by electrochemical advanced oxidation processes using a solar photoreactor at pilot scale, BE.EP.DD


The major environmental problem in many countries of the world, including Brazil, is the pollution of surface water and the discharge of agricultural wastewater contaminated by recalcitrant organic compounds. According to this situation, it is necessary to develop new technologies for the treatment of contaminated effluents, as in the case of Advanced Oxidation Processes (AOP). Some of the AOPs use hydrogen peroxide (H2O2) as a precursor of the hydroxyl radical (*OH), which can be electrogenerated in situ by means of the O2 Reduction Reaction (ORR) using Gas Diffusion Electrodes (GDE). In this research project will be synthesized and characterized bimetallic oxides (La, Nb, Hf and Zr) incorporated to a Printex L6 carbon matrix to act as catalysts to generation of H2O2. Studies using mentioned metals oxides resulted in both the increase of H2O2 generation and decrease of oxygen reaction reduction potential, that is promising to the studies of them synergism as electro-catalystic for ORR. The most promising materials will be used as a modifier in the GDE electrodes preparation, which will be applied later in the pesticides degradation (paraquat, sodium-metham and carbaryl) using a bench cell and an electrochemical flow reactor. The AOPs used as degradation method will be electro-Fenton, photoelectro-Fenton and H2O2/UV. The degradation monitoring will be evaluated using High Performance Liquid Chromatography (HPLC), Liquid Chromatography coupled with Mass Spectrometry (LC-MS), Total Organic Carbon (TOC), Íon Chromatography (IC) and ecotoxicity essays. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOS SANTOS, ALEXSANDRO J.; KRONKA, MATHEUS S.; FORTUNATO, V, GUILHERME; LANZA, V, MARCOS R.. Recent advances in electrochemical water technologies for the treatment of antibiotics: A short review. CURRENT OPINION IN ELECTROCHEMISTRY, v. 26, . (19/04421-7, 17/10118-0, 14/50945-4, 19/20634-0, 17/23464-3)
DOS SANTOS, ALEXSANDRO J.; FAJARDO, ANA S.; KRONKA, MATHEUS S.; GARCIA-SEGURA, SERGI; LANZA, V, MARCOS R.. Effect of electrochemically-driven technologies on the treatment of endocrine disruptors in synthetic and real urban wastewater. Electrochimica Acta, v. 376, . (19/20634-0, 18/22211-7, 17/23464-3, 18/22022-0, 17/10118-0, 18/22210-0, 14/50945-4)
KRONKA, MATHEUS S.; SILVA, FERNANDO L.; MARTINS, ALYSSON S.; ALMEIDA, MICHELL O.; HONORIO, KATHIA M.; LANZA, MARCOS R. V.. Tailoring the ORR selectivity for H2O2 electrogeneration by modification of Printex L6 carbon with 1,4-naphthoquinone: a theoretical, experimental and environmental application study. MATERIALS ADVANCES, v. 1, n. 5, p. 1318-1329, . (14/50945-4, 15/14669-5, 17/23464-3, 17/10118-0)
MARQUES CORDEIRO-JUNIOR, PAULO JORGE; KRONKA, MATHEUS SCHIAVON; GOULART, LORENA ATHIE; VERISSIMO, NATHALIA CAROLINA; MASCARO, LUCIA HELENA; DOS SANTOS, MAURO COELHO; BERTAZZOLI, RODNEI; DE VASCONCELOS LANZA, MARCOS ROBERTO. Catalysis of oxygen reduction reaction for H2O2 electrogeneration: The impact of different conductive carbon matrices and their physicochemical properties. JOURNAL OF CATALYSIS, v. 392, p. 56-68, . (16/08760-2, 16/01937-4, 17/10118-0, 16/19612-4, 14/50945-4, 17/23464-3, 11/14314-1)
FORTUNATO, V, GUILHERME; KRONKA, MATHEUS S.; DOS SANTOS, ALEXSANDRO J.; LEDENDECKER, MARC; LANZA, V, MARCOS R.. Low Pd loadings onto Printex L6: Synthesis, characterization and performance towards H2O2 generation for electrochemical water treatment technologies. Chemosphere, v. 259, . (14/50945-4, 17/10118-0, 19/04421-7, 17/23464-3, 19/20634-0)
DA COSTA, ALINE J. M.; KRONKA, MATHEUS S.; CORDEIRO-JUNIOR, PAULO J. M.; FORTUNATO, GUILHERME V.; DOS SANTOS, ALEXSANDRO J.; LANZA, MARCOS R. V.. Treatment of Tebuthiuron in synthetic and real wastewater using electrochemical flow-by reactor. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 882, . (16/25831-0, 17/23464-3, 19/04421-7, 16/19612-4, 17/10118-0, 19/20634-0, 14/50945-4)
DOS SANTOS, ALEXSANDRO J.; FORTUNATO, V, GUILHERME; KRONKA, MATHEUS S.; VERNASQUI, LAIS G.; FERREIRA, NEIDENEI G.; LANZA, V, MARCOS R.. Electrochemical oxidation of ciprofloxacin in different aqueous matrices using synthesized boron-doped micro and nano-diamond anodes. Environmental Research, v. 204, n. A, . (17/10118-0, 19/20634-0, 14/50945-4, 19/04421-7, 17/23464-3, 19/00592-1)

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