Banca de DEFESA: JOICE DA SILVA TEIXEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOICE DA SILVA TEIXEIRA
DATA : 22/07/2022
HORA: 14:00
LOCAL: https://meet.google.com/dyn-jcvk-oyi
TÍTULO:

Use of hydrotalcite and hydroxyapatite in the treatment of produced water from petroleum.

PALAVRAS-CHAVES:

Synthetic clays; petroleum effluent; double hydroxides; apatites; sniff.

PÁGINAS: 105
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

Brazil is one of the biggest oil producers in the world. This large production volume generates a large amount of waste, including produced water (PA). AP is considered to be of complex composition, in view of the large number of constituents. This reason makes it necessary to develop research that seek treatment alternatives for this research. Some researches point out that lameL’s double hydroxide oxides, presentlars (physical-chemical characteristics), that an excellent material to make chemical-chemicals are used as adsorbent of polluting chemical components. The objective of this work was to synthesize Hydrotalcite(HT) and Hydroxyapatite (HAp), and then apply them as adsorbents in AP. The materials were obtained by the variable pH coprecipitation method, HT was synthesized and 3 Mg/Al ratios, being 1:1, 2:1 and 3:1, since HAp was synthesized in the ratio of 1.67 of Ca/P. The materials were characterized as XRD, XRF, TG/DTG and FTIR techniques. The advertisements obtained were obtained as advertisements or in manufactured used water, 50 mg of used water was used and 5 advertisements were produced in AP, under materials or in the times of 30 minutes, 60 minutes, 120 and 180 minutes. Advertisements were tested before and after the experiments tested, such as: TOG, durability and concentration of metals (Ni, Cd, Pb, Fe, Zn), via atomic absorption spectroscopy (AAS). Materials in a high level of purity were acquired, using the co-precipitation method, for all reasons, as well as presenting the structural, textural, logical and thermal structures properties. The materials present a good performance in the removal of metals, during the adsorption tests, with HT:1 being the material that presented a better behavior and percentage of removal for all metals, already in alteration to HAp, lead was the metal with the highest removal percentage. It is clear that HT 2:1 is efficient in removing all metals, and HAp as an adsorbent, Pb, Fe Zn, while for Ni the material not presented in the metal concentration. 

MEMBROS DA BANCA:
Presidente - 7961 - ANNE GABRIELLA DIAS SANTOS CALDEIRA
Externa à Instituição - TAISA CRISTINE DE MOURA DANTAS
Interno - 12281 - VINICIUS PATRICIO SANTOS CALDEIRA