Banca de QUALIFICAÇÃO: NATALIA VOGEL

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : NATALIA VOGEL
DATE: 22/09/2023
TIME: 17:00
LOCAL: Campus Feliz
TITLE:

DEVELOPMENT AND EVALUATION OF CERAMIC FILTER FOR RETENTION OF MICROPLASTICS

KEY WORDS:

Ceramic filter. Glass. Yerba mate. Microplastics.

PAGES: 39
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Cerâmicos
SUMMARY:

Annualy, the plastic industry has increased its production rate, causing a large amount of discarded materials after use. The degradation of plastic can generate microplastics, which contaminate water bodies, contributing to the dispersion of persistent organic pollutants. Thus, with the aim of retaining microplastics present in water, the objective was to develop a ceramic filter from the addition of yerba mate residues, in search of achieving the porosity of the material, and of the glass residue to increase its mechanical resistance. Thus, contents of 0, 10 e 20% of the yerba mate residue and 10% of the glass residue were used, going through steps of grinding, sieving, humidification, pressing, drying and burning. The sintering of the ceramic material was carried out at temperatures of 900 and 950 °C. After obtaining the ceramic filters, the properties of linear shrinkage, loss on fire, water absorption, porosity and apparent density, and flexural strength were evaluated, as well as the characterization by optical microscopy. Then, the flow were evaluated, as well as the leaching of elements such as sodium and potassium by the ceramic filter. Also, filter a suspension containing microplastics checking their retention through turbidity analysis. The results obtained revealed that the apparent porosity and water absorption of the formulation containing 20% yerba mate and sintered at 900 °C were greater than the other formulations, however demonstrating low mechanical resistance. Thus, the formulation containing 10% yerba mate and sintered at 900 °C showed better condition than the others, achieved good microplastic retention, reduced from 305 NTU to 3.03 NTU. Thus, even though the formulation containing 20% yerba mate caused greater porosity and flow, its resistance was not adequate to meet the process the formulation containing 10% yerba mate.

COMMITTEE MEMBERS:
Externa ao Programa - 1795122 - NICEIA CHIES DA FRE
Externa ao Programa - 2383749 - SUYANNE ANGIE LUNELLI BACHMANN