The behavior of different advanced oxidative processes in an alcoholic medium for the degradation of pesticides

• Grant number: 22/15337-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: April 01, 2023
• Status: Discontinued
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Artur de Jesus Motheo
• Grantee: William Santacruz Parra
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 22/12895-1 - Advanced processes for the degradation of emerging pollutants: catalytic materials, electroanalytical sensors and scientific dissemination, AP.TEM
• Associated scholarship(s): 24/14115-9 - Design of New 3D Printed Reactors for Photoelectrocatalytic Degradation of Persistent Organic Pollutants in Alcoholic Media, BE.EP.DR

Abstract

Industrial growth has led to an increase in the amount of emerging pollutants that end up in soils and effluents, which requires the implementation of new alternatives for water treatment in order to eliminate these pollutants from the environment. Consequently, advanced oxidative processes (AOP's) appear as useful and efficient methods in the degradation of organic contaminants, but they have some limitations in their large-scale implementation, such as low concentrations of pollutants, high-energy demand and the use of large equipment. To overcome these shortcomings, a methodology of pre-concentration of pollutants by adsorption in active carbon is being widely used, whose desorption is carried out using an organic solvent such as methanol or ethanol, obtaining a higher concentration of pollutant in small volumes, facilitating the realization of the treatment, with lower costs and greater efficiency in the degradation process. Based on this, some of advanced oxidative processes in alcohol medium will be implemented and improved for the degradation of diuron and carbendazim pesticides for their application in water treatment, using electron paramagnetic resonance spectroscopy as a method to identify the radical species formed in the medium during those processes, for better understand the reactions that occur in the solution.