Banca de QUALIFICAÇÃO: SARA NUZA OLIVEIRA DOS REIS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : SARA NUZA OLIVEIRA DOS REIS
DATE: 30/08/2021
TIME: 09:00
LOCAL: https://conferenciaweb.rnp.br/events/banca-de-qualificacao-sara-nuza-oliveira-dos-reis
TITLE:

PHOTOCATALYTIC PERFORMANCE OF ALCALI MATERIAL ACTIVATED ON THE BASE OF RED MUD AND BLAST FURNACE SLAG

KEY WORDS:

red mud; blast furnace slag; photocatalysis; alkali-activated materials; water cleaning. 

PAGES: 73
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Construção Civil
SPECIALTY: Materiais e Componentes de Construção
SUMMARY:

One of the main concerns of the mining industry is the large amount of waste generated in mineral extraction and processing. In addition to causing impacts on the environment, these wastes occupy large areas and can cause problems in their disposal. Many studies have been and are being performed in order to reuse these environmental passives, aiming to reduce environmental damage. Based on this, this work seeks to produce alternative materials to Portland cement through the alkali activation process of industrial waste. On a second step, these alkali-activated materials (AAMs) will be investigated in relation to their degrading potential of solutions of methylene blue dye (MB) from synthetic effluents. The alkali activated materials will be produced essentially from red mud (RM) and blast furnace slag (BFS), which will be ground to pass 200 mesh sieves. These precursors will be characterized through laser granulometry, X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), loss-on-ignition (LOI), thermogravimetry (TGA), adsorption and desorption of nitrogen gas (BET) and scanning electron microscopy (SEM). The literature review supported the AAMs definitions of main parameters of composition, dosage and production methodologies. The alkali-activation effectiveness will be determined through compression resistance and water absorption tests and  microstructural analysis of the AAMs formed. Then, the mix in which it was possible to obtain better mechanical strength and good decontaminating potential will be evaluated.

BANKING MEMBERS:
Interno - AUGUSTO CESAR DA SILVA BEZERRA
Interno - DOMINGOS SAVIO DE RESENDE
Interna - MARCELA MAIRA NASCIMENTO DE SOUZA SOARES
Externo à Instituição - GUILHERME JORGE BRIGOLINI SILVA - UFOP