Banca de DEFESA: IZABELLE CRISTINA DA COSTA SOARES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : IZABELLE CRISTINA DA COSTA SOARES
DATE: 13/12/2021
TIME: 14:00
LOCAL: VIDEOCONFERÊNCIA
TITLE:

Theoretical and experimental insights into degrading organic compounds: experimental conditions, technologies and pollutants.

KEY WORDS:

Azo dyes. Advanced Oxidative Electrochemical Processes. Electro-Fenton. Photoelectro-Fenton.

PAGES: 105
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Analítica
SPECIALTY: Eletroanalítica
SUMMARY:

Water quality, as well as its pollution, feared great concern in the scientific community. This problem has been accompanied by increasing public interest, generating a political demand to legislate more rigorously the limits of emission and content of pollutants in water. Within this context, electrochemical water treatment technologies are highly promising for environmental remediation. These technologies are based on no high oxidation power of two hydroxyl radicals (• OH), which has a high reativity to oxidize organic compost present in effluents. Therefore, at present, I study the application of different Advanced Oxidative Eletrochemical Processes (PEOAs) to treat contaminated synthetic solutions. It is endorsed by the influence of different functional groups in the core structure by potentiodynamic measurements and by computational analyzes, which will allow us to carry out morphological studies in front of orbit where the electrons are more energetic and, then, it has been carried out by transferring the electrons to the electrode surface. , which was associated with electrochemical measurements. Furthermore, the theoretical studies are used to understand electrolyte in mass, in terms of mineralization. The two corantees are reactive Orange 16, Reactive Violeta 4, Reactive Red 228 and Reactive Black 5 foram escolhidos which present the same molecular-based structure with different functional groups. No case of chapter 4 for eletrochemical and photoeletrochemical treatments using UVA and solar radiation. A solution containing or herbicide Triclopyr was treated at neutral pH by different PEOAs. In comparison with the eletro-Fenton treatments it revealed the crucial role of the photo-Fenton reaction, one time that it promoted the production of soluble Fe (II) that favors the removal of pesticides. The Fe (III) -EDDS (1: 1) complex provides an efficient ferrous catalyst for triclopyr herbicide treatment in neutral pH for the PEF process. Finally, a plausible rotation for the degradation of the herbicide catalyzed by Fe (III) -EDDS by PEF and SPEF is finally proposed based on the detected by-products: three heteroaromatic compost and four linear N-aliphatic, formamide and tarthronic and oxamic acids. The PEOAs studied in this work prove to be satisfactory and sustainable technologies for the treatment of effluents.

BANKING MEMBERS:
Externa à Instituição - ALINE MARIA SALES SOLANO - IFRN
Presidente - 1645110 - CARLOS ALBERTO MARTINEZ HUITLE
Externa à Instituição - DANYELLE MEDEIROS DE ARAUJO - UERN
Externa à Instituição - ELIANE BEZERRA CAVALCANTI - UNIT
Externa ao Programa - 2275848 - ELISAMA VIEIRA DOS SANTOS