Banca de DEFESA: LEONARDO ZANATA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : LEONARDO ZANATA
DATE: 13/09/2023
TIME: 14:00
LOCAL: Campus Santo André
TITLE:

Investigation of nano iron oxide and its cellulose composites hybrids effect over biological phenols biodegradation

PAGES: 98
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

Phenolic compounds are environmental contaminants from using pesticides and disinfectants in the agricultural and domestic sectors, respectively. They can be found in wastewater, water sources and in the soil. Due to its toxicity and low biodegradability, biological degradation strategies to remove these persistent organic pollutants (POPs) have sought to improve their removal in wastewater biological treatment systems. Among the most recent strategies are the microbial extracellular electron transfers (EETs) stimulations, which can be highlighted. Thus, this work aims to prepare a hybrid of cellulose and superparamagnetic iron oxide nanoparticle (SPION), such as magnetite (Fe3O4), seeking to evaluate its effects on the stimulation of EETs (enzymatic) during the degradation of phenolic compounds by aerobic biostimulation. The obtained composites were characterized by Dynamic Light Scattering (DLS), scanning electron microscopy (SEM), Fourier transform Infrared spectroscopy (FTIR), Raman spectroscopy and X-rays photoelectrons excited spectroscopy (XPS). Phenol degradation was evaluated by complexation visible spectrophotometry, applying the obtained materials in phenols-contaminated waters (1000 mg L-1). It evaluated the correlation between the material dosage and the contaminant removal and its influence on the kinetics of phenolic pollutant degradation, seeking to identify the degradation route from the phenolic compounds degrading microorganisms and the applied nanomaterials.

COMMITTEE MEMBERS:
Presidente - Interno ao Programa - 1671275 - DERVAL DOS SANTOS ROSA
Membro Titular - Examinador(a) Interno ao Programa - 2605463 - JOSE ANTONIO SOUZA
Membro Titular - Examinador(a) Externo à Instituição - DANIELLA REGINA MULINARI - UERJ
Membro Titular - Examinador(a) Externo à Instituição - RENATA DE LIMA - UNISO
Membro Titular - Examinador(a) Externo à Instituição - SIMONE DE FÁTIMA MEDEIROS SAMPAIO - USP
Membro Suplente - Examinador(a) Interno ao Programa - 1600858 - HERCULANO DA SILVA MARTINHO
Membro Suplente - Examinador(a) Externo ao Programa - 1222415 - MERCIA REGINA DOMINGUES MORETTO
Membro Suplente - Examinador(a) Externo à Instituição - LEONARDO GONDIM DE ANDRADE E SILVA - IPEN