Nanostructures for environmental remediation and power generation from renewable s...
| Grant number: | 17/23464-3 |
| Support type: | Scholarships in Brazil - Doctorate (Direct) |
| Effective date (Start): | July 01, 2018 |
| Effective date (End): | July 31, 2021 |
| Field of knowledge: | Engineering - Sanitary Engineering |
| Principal Investigator: | Marcos Roberto de Vasconcelos Lanza |
| Grantee: | Matheus Schiavon Kronka |
| Home 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 |
Abstract 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) | |