Banca de QUALIFICAÇÃO: JOSÉ RODRIGUES DE MORAIS FILHO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSÉ RODRIGUES DE MORAIS FILHO
DATE: 18/12/2023
TIME: 09:00
LOCAL: videoconferência
TITLE:

Sorption of basic blue dye 41 (BB41) in a particulate system commercial chitosan

KEY WORDS:

chitosan; dye BB41; azo; basic; adsorption; isotherms

PAGES: 76
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Orgânica
SPECIALTY: Polímeros e Colóides
SUMMARY:

The Sorption of the dye basic blue 41 was carried out on a system particulate of commercial chitosan in aqueous solution. Dye adsorption isotherms were carried out at 15°C, 25°C, 35°C and 45°C, where an increase in adsorption was observed with increasing temperature, indicating a possible endothermic behavior. At 15°C about 50% of the dye was removed at the lowest concentration of the isotherm, followed by 60% at 25°C, 70% at 35°C and 92% at 45°C, all at the lowest concentration worked. The calibration curve was performed using a non-linear regression method, where 𝑅 2 = 0,9998, showing good correlation. The theoretical adsorption model that presented the best correlation was the Sips model, that is, at low concentrations of dye the model reduces to the Freundlich model and at high concentrations it reduces to the Langmuir model. All data was handled in Python.

COMMITTEE MEMBERS:
Interno - 1959889 - DAVI SERRADELLA VIEIRA
Presidente - 1198847 - JOSE LUIS CARDOZO FONSECA
Externa ao Programa - 1754360 - WALDENICE DE ALENCAR MORAIS LIMA - null