Banca de QUALIFICAÇÃO: GISELE DE AGUIAR LIMA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : GISELE DE AGUIAR LIMA
DATE: 17/06/2021
TIME: 10:00
LOCAL: UFOPA
TITLE:

Conversion of kaolin tailings from the Amazon into new zeolitic materials: synthesis and
structure control

KEY WORDS:

Zeolites, kaolin tailings, chabazite, F and P1 zeolite

PAGES: 45
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Geologia
SPECIALTY: Mineralogia
SUMMARY:

The use of tailings from the mineral industry to obtain materials of technological importance has been intensifying in the last two decades, with the aim of reducing the environmental impact generated by them and adding value to an unwanted product. In the case of kaolin tailings from Amazonia, its use for the production of zeolites with zeolite A structure, sodalite and faujasite (zeo 13X) is already described. In the present study, the results of the synthesis and characterization of new zeolitic structures by alkaline fusion and hydrothermal process are reported. The transformation of tailings into zeolite F, P1 and chabazite was carried out by X-ray diffraction, infrared spectroscopy, thermal analysis and scanning electron microscopy. The results showed that the zeolites were successfully obtained without impurities, high degree of crystallinity, thermal stability above 300º C with very distinct and defined morphologies. Thus, it can be stated that the kaolin tailings from the Amazon can be reused to obtain new zeolitic materials that are known for their great scientific importance.

BANKING MEMBERS:
Presidente - 2142681 - BRUNO APOLO MIRANDA FIGUEIRA
Interno - 1794508 - ITAMAR RODRIGUES PAULINO
Externo à Instituição - SIMONE QUARANTA - CNRS
Externa à Instituição - PATRICIA TERESA SOUZA DA LUZ - IFPA