Banca de DEFESA: LUAN CAVALCANTI DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUAN CAVALCANTI DA SILVA
DATE: 28/06/2024
TIME: 09:00
LOCAL: google meet
TITLE:

EXTRACTION OF TANNINS FROM THE BARKS OF PLANTED FOREST SPECIES AT DIFFERENT TIMES OF ATTITUDE AND CONCENTRATIONS IN WATER TREATMENT

KEY WORDS:

forest species, planted forest, native forest, cationization, coagulants.

PAGES: 50
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Tecnologia e Utilização de Produtos Florestais
SPECIALTY: Anatomia e Identificação de Produtos Florestais
SUMMARY:

One of the products that has attracted great commercial interest in recent years are tannin-based polymers. Tannins are substances present in different parts of plants and have diverse applications in the petroleum and pharmaceutical industries, in the manufacture of plastics and adhesives, animal skin tanning and water treatment, among others. Tannin-based coagulants act directly in the coagulation and flocculation process in water treatment, this process being a pre-treatment that conditions the water for subsequent treatments. Therefore, this work aims to evaluate the potential for extracting tannins from species located in planted forests and native forests and evaluate the performance of tannins as coagulants for water treatment. 5 (five) healthy trees of Tectona grandis, Acacia mangium, Copaifera arenicola, Hancornia speciosa and Terminalia catappa will be selected in adulthood, the selected trees will have part of their bark collected, bark will be removed from the base, middle and top of the trunk Aiming to represent the entire tree, the tannins will be extracted from these barks and quantified for the species. After extraction and quantification of tannins, cationization will be carried out, which is the preparation of a flocculating agent based on plant extract. And finally, coagulation tests at different concentrations and stirring times. Concentrations of 50 mg/L¹, 100 mg/L¹ and 150 mg/L¹ will be used for each coagulant. For the stirring times, initially rapid mixing will be carried out at 130 rpm at different times: 1 min and 2 min and then slow mixing at 30 rpm at times of: 10 min and 20 min, performing all possible combinations. At the end of the project, it is expected to obtain information on the extraction of tannins from forest species located in planted forests, as well as results that optimize the water treatment process and add value to non-timber forest products.

COMMITTEE MEMBERS:
Presidente - 2326526 - TATIANE KELLY BARBOSA DE AZEVEDO CARNAVAL
Interno - 1079298 - ALEXANDRE SANTOS PIMENTA
Externa ao Programa - 1698809 - JULIANA LORENSI DO CANTO - UFRNExterna à Instituição - THAÍS BRITO SOUSA - UFLA