Banca de DEFESA: JOÃO MILLER DE MELO HENRIQUE

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOÃO MILLER DE MELO HENRIQUE
DATA : 07/04/2017
HORA: 15:00
LOCAL: AUDITÓRIO DO PPGEQ
TÍTULO:

"Germination and vigor of lettuce and sesame seeds in treated water treated by ionic flocculation and filtration"

PALAVRAS-CHAVES:

Water produced, surfactant, germination, lettuce, sesame.

PÁGINAS: 92
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:

Given the increase in the generation of water produced (WP) by the oil industry, several countries that have activities related to exploration and production also suffer from water scarcity. On the other hand, agricultural irrigation is the main activity consuming water resources. In search of equation, to use residual waters in this activity presents a potential application. In this context, the objective of the present study was to study the effect on germination and vigor of lettuce (Lactuca sativa) and sesame seeds (Sesamum indicum) in several effluents: freshwater produced, treated water via ionic flocculation and filtration, besides Solutions containing each constituent of the water produced. Synthetic produced water was treated with 5 surfactant concentrations: 300, 350, 400, 450 and 500 ppm. After stabilization of the flakes, the solution was subjected to a filtration process, its influence being investigated in the process. Regarding the treatment, the removal of metals and oil were measured. For germination tests (G), first germination test (GPC), germination velocity index (IVG), shoot length (CPA), radicle length (CR), seedling length (CP) and dry mass (DM) were analyzed in parallel. Finally, inhibition curves for the constituents of the WP were plotted, in order to verify the limiting concentrations of these components in the germinations. After treatment of the WP with flocculation and filtration, up to 40% calcium was removed from the water produced. In relation to oil, the percentage of removal reached a value greater than 99%. Without filtration, only the concentration of 300 ppm of surfactant did not comply with the legislation (20 ppm). For low concentrations of organic matter, metals and salinity in the water produced, the process was efficient in the reuse of treated effluent for germination of lettuce and sesame seeds. The filtration did not present significant difference in the germination test. At the conclusion of the present dissertation, the objectives reached and the methodology employed presented a satisfactory performance to describe the germination behavior of two cultures in a produced water treated with ionic flocculation.

 

 

 

MEMBROS DA BANCA:
Presidente - 1308273 - EDUARDO LINS DE BARROS NETO
Externo ao Programa - 1880265 - MARCIO DIAS PEREIRA
Externo à Instituição - RICARDO PAULO FONSECA MELO - UFERSA
Externo ao Programa - 1801769 - SHIRLLE KATIA DA SILVA NUNES