Banca de DEFESA: CARLA SUELLEM SOUSA ARAUJO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : CARLA SUELLEM SOUSA ARAUJO
DATE: 28/02/2022
TIME: 09:00
LOCAL: google meet
TITLE:

Preparation and characterization of hydroxyapatite from thorns of Tambaqui (Colossoma macropomum) for organic pollutant removal

KEY WORDS:

Amazonia, Tambaqui, hydroxyapatite, purification, adsorption, pollutant.

PAGES: 60
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

Biomaterials comprise an important group of low-cost materials and exclusive properties, which are currently being applied in several technological areas for the protection and depollution of the environment. The objective of this work was the production, characterization and application of hydroxyapatite from fish waste from Santarém (Western region of Para, Brazil). The selected samples were focused on the spines of Tambaqui (Colossoma macropomum), a typical fish of the region and widely consumed by the population. Purification efficiency was monitored using X-ray diffraction (XRD), infrared spectroscopy (FTIR), thermal analysis (TG-DSC) and scanning electron microscopy (SEM) techniques. The results revealed that the raw material contained impurities of an organic nature that were removed after physical-chemical purification processes such as calcination, filtration and drying, thus showing that it can be transformed into a value-added product of technological and environmental interest. The adsorption tests with the pollutant showed a degradation efficiency close to 70% in 1 h, thus showing that hydroxyapatite obtained from Tambaqui residues can be used as a cheap source to obtain a cationic organic pollutant adsorbent.

BANKING MEMBERS:
Presidente - 2142681 - BRUNO APOLO MIRANDA FIGUEIRA
Interno - 1794508 - ITAMAR RODRIGUES PAULINO
Externo à Instituição - ALCY F RIBEIRO