Banca de QUALIFICAÇÃO: SWIANNY PERTTESON ARRUDA DE OLIVEIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : SWIANNY PERTTESON ARRUDA DE OLIVEIRA
DATE: 05/06/2025
TIME: 09:00
LOCAL: Auditório do CCET
TITLE:

STUDY OF ZEOLITE SYNTHESIS PARAMETERS USING SILICO-ALUMINUM

INDUSTRIAL WASTE WITH AIM AT SCALING

KEY WORDS:

silicoaluminate residue; zeolite A; mechanochemical milling; alkaline digestion;

particle size distribution

PAGES: 83
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Cerâmicos
SUMMARY:

he growing demand for sustainable technologies has driven the development

of strategies for the reuse of industrial waste. This work proposes the valorization of a silica-

aluminous residue from the lithium production chain, specifically from the processing of

spodumene, as an alternative source of silicon and aluminum for the synthesis of lta-type

zeolites. For this purpose, physical-chemical activation methodologies such as sieving, alkaline

digestion, alkaline fusion and mechanochemical activation (grinding) are required to assess the

impact of critical operational variables — temperature, time, naoh concentration, water content,

rotation per minute and mesh opening — on the release of species of interest into solution.

Preliminary results show that the residue has a composition rich in si and al, with morphological

characteristics compatible with phases such as β-spodumene and quartz. X-ray diffraction and

sem analyses confirmed the presence of resistant silica phases such as quartz and the need for

additional treatments to enable their solubilization. For future comparisons, the standard lta

zeolite was successfully obtained. The data obtained so far support future stages of lta zeolite

synthesis, in which it will be possible to comparatively evaluate the influence of each activation

route on the crystallization efficiency and quality of the product of interest.

COMMITTEE MEMBERS:
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER
Interno - 1350249 - RUBENS MARIBONDO DO NASCIMENTO
Externo à Instituição - ADONAY RODRIGUES LOIOLA - UFC