Banca de DEFESA: GIDIÂNGELA CECÍLIA CAVALCANTE DA SILVA LIMA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : GIDIÂNGELA CECÍLIA CAVALCANTE DA SILVA LIMA
DATE: 22/07/2021
TIME: 09:00
LOCAL: videoconferência
TITLE:
SYNTHESIS OF ZEOLITE SILICOALUMINOPHOSPHATE (SAPO-11) USING FLUORESCENT LAMP WASTE
KEY WORDS:
Fluorescent Lamp, Phosphoric Powder and SAPO-11.
PAGES: 70
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SPECIALTY: Físico Química Inorgânica
SUMMARY:
The fluorescente lamp is a material widely used in society, after consumption because it is treated as a material that contains heavy metals, such as Mercury, its inappropriate disposal causes great environmental impacts. The residue from the fluorescente lamp (phosphorous poder) was supplied by the company BQMIL (Brasil Química e Mineração Industrial Ltda), located in Mossoró/RN, after the processo f crushing the lamps, the substances are separated into categories such as: glasses, gases, electrodes (electrons), bakelitic isolation and phosphoric poder, this phosphoric poder undergoes a distillation process to recover mercury, leaving the solid residue. In order to use and manage the phosphoric poder residue, this was used material in the synthesis processo f zeolites, which are composed of tetrahedra of AlO4 and SiO4, linked together by sharing common oxygen atms. The studied residue has in its chemical composition silicone(Si), aluminum (Al) and phosphorus (P), which contributed to the synthesis of silicoaluminophosphates (SAPO-11) zeolites, structure AEL, as na alternative source of Si, Al and P, by means of the conventional hydrothermal process. The methodology applied in the studies, parameters such as the source of additional aluminum in the synthesis, neutral alumina or aluminum hydroxide, temperature and crystallization time were varied. The results of the syntheses were characterized by X-ray diffraction (XRD) techniques, infrared (IR) spectroscopy, nuclear magnetic resonance (NMR), scanning eléctron microscopy (SEM) and textural analysis. The rearch carried out in this work is na innovation in the SAPO-11 synthesis, adding value to the waste and transforming it into a new material, thus reducing costs in syntheses and mitigating environmental impacts.
BANKING MEMBERS:
Externo ao Programa - 1753094 - ALCIDES DE OLIVEIRA WANDERLEY NETO
Interno - 350509 - ANTONIO SOUZA DE ARAUJO
Externa à Instituição - MARIELE IARA SOARES DE MELLO - UFRN
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER
Externa à Instituição - ÍRIA ALMEIDA LEAL BASSAN - UFPE