Banca de DEFESA: EMILIANNY RAFAELY BATISTA MAGALHAES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : EMILIANNY RAFAELY BATISTA MAGALHAES
DATA : 03/08/2018
HORA: 15:00
LOCAL: MINIAUDITÓRIO DA BCZM
TÍTULO:

TREATMENT AND APPLICATION STRATEGIES FOR PRODUCED WATER USING A SYNTHETIC EFFLUENT 

PALAVRAS-CHAVES:

 produced water, biosurfactant, dissolved air flotation, Moringa oleífera, activated sludge, germination.

 

PÁGINAS: 125
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
SUBÁREA: Processos Industriais de Engenharia Química
ESPECIALIDADE: Processos Bioquímicos
RESUMO:

The produced water, generated in the exploration and production stage, is one of the main effluents of the petroleum industry and is characterized as an effluent of complex composition, formed by various organic and inorganic compounds. It accounts for about 70% of total wastewater generated during the life of the well and their characteristics and quantities produced are also dependent on their location and age of this one.Currently, in Brazil, millions of m³ of water effluents are disposed of in the environment, as well as a considerable amount of oils and greases. The present thesis aimed to investigate, through a synthesized effluent, potential applicabilities for untreated and treated produced water and, thus, enable the management and reuse of this effluent. The results showed that produced water without previous treatment was presented with a potential use for supplementation of carbon source to agroindustrial residues in the production of biosurfactant. promoting a positive emulsion stability effect when using the green coconut shells as the substrate and maintaining stable, under elevated temperatures, the emulsion formed by the broth produced by cashew residues. When undergoing a physical-chemical treatment - whose combined process was formed by a flocculation step, with 226 rpm and 3 minutes in the fast mixing stage and 90 rpm and 4 minutes in the slow mixing stage, followed by dissolved air flotation, carried out under the injection of 10% v/v of water saturated with air at 6 bar and with a flotation time of 28 minutes -, demonstrated that extracts of Moringa oleifera seeds with and without oil, at a concentration of 64 mg/L, are effective natural flocculants in their treatment, reducing the content of oils and greases (TOG) in about 81%, with the oil extraction unaffecting the coagulant effect of the seeds. The biological treatment through activated sludge was highly efficient in the removal of TOG from produced water, with efficiencies, in most cases, greater than 90% and achieving compliance with the environmental requirements for this parameter. Through the results obtained it was possible to conclude that the effluent treated by this biological process presents a promising ability to be reused in the germination and irrigation of non-food crops.

MEMBROS DA BANCA:
Externo à Instituição - ANITA MARIA DE LIMA - UFS
Externo à Instituição - CARLOS EDUARDO DE ARAÚJO PADILHA - UFRN
Presidente - 1346198 - EVERALDO SILVINO DOS SANTOS
Externo ao Programa - 2668814 - MAGNA ANGELICA DOS SANTOS BEZERRA SOUSA
Externo à Instituição - ROBERTO RODRIGUES DE SOUZA - UFS
Externo ao Programa - 027.194.253-38 - SÉRGIO DANTAS DE OLIVEIRA JÚNIOR