Banca de DEFESA: HELEN REIS MODESTO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : HELEN REIS MODESTO
DATE: 15/12/2022
TIME: 14:00
LOCAL: https://conferenciaweb.rnp.br/webconf/wagner-27
TITLE:

PREPARATION AND CHARACTERIZATION OF ACID AND MAGNETIC COALS FROM YEAST BIOMASS AND YEAST BIOMASS RESIDUE

PAGES: 67
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SPECIALTY: Físico Química Inorgânica
SUMMARY:

Agroindustrial residues stand out in the current scenario because they meet the ideals of sustainability to reduce impacts on the production chain and are in line with the bioeconomy. Brazil is the largest sugarcane producer in the world and this industry is one of the major generators of waste and by-products that can have added value in many different ways. The valorization of waste generated in this industry in a simple and efficient way is a challenge to be overcome. In this scenario, the present work proposes to obtain acidic and magnetic carbons from yeast biomass (YB) and yeast biomass residue (YR) following different methodologies, aiming to obtain a material with interesting characteristics for future applications. The obtained materials were characterized by different techniques to evaluate the effect of the different processes carried out on the physicochemical properties of the final products. After analyzing the carbons obtained following three different synthesis methodologies, those obtained from hydrothermal carbonization in the presence of sulfuric acid and subsequent impregnation of magnetic nanoparticles stand out, which resulted in materials with efficient magnetization and average surface acidity of 4.3mmol /g, comparable to the acidity of expensive commercial catalysts.

COMMITTEE MEMBERS:
Presidente - Interno ao Programa - 1601156 - WAGNER ALVES CARVALHO
Membro Titular - Examinador(a) Interno ao Programa - 1623562 - RODRIGO LUIZ OLIVEIRA RODRIGUES CUNHA
Membro Titular - Examinador(a) Externo à Instituição - ELIEZER LADEIA GOMES - UNIFESP
Membro Suplente - Examinador(a) Interno ao Programa - 233.691.308-90 - YVAN JESUS OLORTIGA ASENCIOS - UNIFESP
Membro Suplente - Examinador(a) Externo ao Programa - 2604737 - EVERALDO CARLOS VENANCIO