Banca de DEFESA: WELBERTH SANTOS LAIZO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : WELBERTH SANTOS LAIZO
DATE: 26/04/2023
TIME: 19:00
LOCAL: CAP/UFSJ e Videoconferência
TITLE:

SYNTHESIS OF A COMPOUND BASED ON CARBON AND ALUMINUM OXIDE, ITS CHARACTERIZATION AND APPLICATION IN ADSORPTION TEST IN SYNTHETIC EFFLUENT

KEY WORDS:

Charcoal; Elephant Grass; Eucalyptus; alumina; sol-gel

PAGES: 80
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Materiais Conjugados Não-Metálicos
SUMMARY:

Charcoal and alumina are compounds widely used in industry, as adsorbents and catalyst supports, and can act alone or together with other compounds and molecules. Seeking to combine the adsorbent capacities of these two materials, the impregnation of aluminum (Al2O3) was proposed, by sol-gel process, inside a carbonaceous matrix, aiming to promote an increase in the removal of organic contaminants in the aqueous phase in synthetic effluents, compared to what the components separately can provide. The methodology employed began with the production of an adsorbent based on elephant grass charcoaling. This was treated with a colloidal solution containing aluminum Tri-sec-butoxide (C12H27AlO3), which was gelled with water vapor, and subsequently thermally treated, obtaining as a final mixed product, charcoal/aluminum. The adsorbent was then characterized for the presence of crystalline phases (X-Ray Diffraction), morphology (Scanning Electron Microscopy), specific area and porosity (multipoint method) and thermal stability (Thermogravimetry). It was possible to identify aluminum in its boehmite form, the increase in specific area (14.42%) and porosity (17.03%), in relation to the initial coal, as well as a range of thermal stability that was close to 500°C, in addition, the presence of aluminum in the pores was present in the microscopy analyses, as well as its dispersion over a large part of the surface of the samples.
The production and impregnation process, therefore, proved to be effective for what was proposed, and it is now necessary to verify its use as an adsorbent.

BANKING MEMBERS:
Presidente - 1893854 - ALEXANDRE BOSCARO FRANCA
Interno - 1985765 - FABIANO LUIZ NAVES
Interno - 1759475 - JORGE DAVID ALGUIAR BELLIDO
Interna - 1810303 - PATRICIA DA LUZ MESQUITA
Externo à Instituição - LUCAS MEILI - UFAL