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Degradation of carbamate agrochemicals from Advanced Oxidation Electrochemical Processes (AOEP) using boron doped diamond electrodes

Grant number: 19/00592-1
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): March 01, 2019
Effective date (End): May 31, 2022
Field of knowledge:Engineering - Materials and Metallurgical Engineering
Principal Investigator:Neidenêi Gomes Ferreira
Grantee:Laís Gimenes Vernasqui
Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brasil). São José dos Campos , SP, Brazil
Associated research grant:17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination, AP.TEM

Abstract

This project aims the synthesis and characterization of micro/nanostructured boron-doped diamond electrodes to study parabens (with endocrine interference activity) degradation. Diamond films will be grown using the HFCVD method and will be characterized by techniques such as: scanning electron microscopy, X-ray diffraction and Raman spectroscopy. Electrochemical processes (direct oxidation and indirect oxidation via H2O2 electro generation) and electro-Fenton electrodes associated to O3 and UV (254 nm), will be used to degrade the composts. Initially, the degradation will be developed in an electrochemical cell and, after, in an electrochemical flow reactor. As variables of this project, we will evaluate: electrode materials, reaction potential, degradation efficiency of each process and identification of possible intermediates formed, aiming to obtain information for the determination of the degradation routes for each compound. The analytical determination of the target compounds and by-products will be done using instrumental analytical techniques, such as high performance liquid chromatography with UV/Vis and mass detectors, ion chromatography, total organic carbon analysis and others, aiming to evaluate the efficiency of each process studied. It will also be part of this project the preparation of scientific reports, articles for submission in periodicals with selective editorial policy and papers for presentation in congresses and national and international, in order to disseminate the results obtained in this work. (AU)