Banca de DEFESA: MARIANA DA COSTA BATISTA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : MARIANA DA COSTA BATISTA
DATA : 12/04/2017
HORA: 14:00
LOCAL: Auditório do CTEC
TÍTULO:
DEGRADATION OF GLYPHOSATE, MSMA AND 2,4-D HERBICIDES THROUGH ADVANCED OXIDATIVE PROCESSES AND PHOTODEGRADATION USING ULTRAVIOLET RADIATION
PALAVRAS-CHAVES:
Pesticides. Advanced Oxidative Processes. 2,4-D. MSMA. Glyphosate.
PÁGINAS: 46
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Sanitária
RESUMO:
At all times, a multitude of synthetic organic substances are disposed of without environment, causing damage to the aquatic and terrestrial biota. Truly effective degradation forms have not yet been found, opening a gap for the study of effective processes that allow a complete mineralization of the compounds. Advanced oxidation processes (POAs) enter into this scenario as a possibility of solution, since they enable a complete degradation of organic substances by oxidizing them to carbon dioxide, water and inorganic ions or allowing the transformation of complex substances into more biodegradable ones. Contained in this scenario are in pesticides, products used in large scale in Brazil, given that our country has been prominent in the world scenario in food production. There is an urgent need for an in-depth study of these pesticides and their degradation characteristics. In the present work we study the feasibility of photo-Fenton POAs and UV/H2O2 systems, as well as a photodegradation by ultraviolet radiation in three pesticides, 2,4-D (2,4-dichlorophenoxyacetic acid), MSMA Monosodium), and Glyphosate (N-phosphonomethyl glycine). In summary, the best results were obtained with 2,4-D in concentration of 20 mg/L of hydrogen peroxide with approximately 100% of degradation in 60 minutes of test and glyphosate in the three tests, being the ratio [C][OH-] [1]: [1] the most effective in terms of rate of degradation.
MEMBROS DA BANCA:
Interno - 1759924 - HELIO RODRIGUES DOS SANTOS
Externo à Instituição - RAUL ROSENHAIM - UFPB
Presidente - 028.569.404-98 - RENNIO FELIX DE SENA - UFPB