Banca de DEFESA: LUA MORENA LEONCIO DE OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LUA MORENA LEONCIO DE OLIVEIRA
DATA : 03/04/2019
HORA: 14:00
LOCAL: Instituto de Geociências / Auditorio B
TÍTULO:

INFLUÊNCIA DE NUTRIENTES NA BIODEGRAÇÃO DE HIDROCARBONETOS TOTAIS DE PETRÓLEO (HTPs) DISPERSADOS PELA FORMAÇÃO DE AGREGADOS ÓLEO-MPS (OSA)

PALAVRAS-CHAVES:

Biostimulation, Natural dispersion; Petroleum

PÁGINAS: 58
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Geologia
ESPECIALIDADE: Geoquímica
RESUMO:

Oil spills into the environment have been one of the biggest exemptions today, and it is necessary to recover areas impacted by oil, using the same technologies, biotechnologies that aid in the removal and / or biodegradation of oil in the environment. Suspended particulate amortization systems consist of a natural dispersion and oil biodegradation technique with oil droplet particles and suspended particulate matter (SPM). Biostimulation can increase the efficiency of biodegradation from OSAs formation. Thus, the central objective of the research was evaluated by laboratory tests, based on the concentration of Total Petroleum Hydrocarbons (TPHs) dispersed by Oil-MPS aggregates (OSAs). Biostimulation and autocorneal bioassistance were used in conjunction with the dispersion of a life cycle by the formation of OSAs, as a way to potentiate the biodegradation of HTPs from the addition of nutrients (N, P, K) and addition of microorganisms from the SPM collected in the São Paulo estuary. Before starting the experiment, a sample of the SPM and the water of the area of interest for the geochemical characterization of the TPHs and quantification of the nutrients were carried out. The experiment was carried out at the Nucleus of Environmental Systems Studies (NEA), located in the Institute of Geosciences of the Federal University of Bahia (IGEO / UFBA) and is part of the research project "Development of Multibioprocesses of Remediation". in coastal areas impacted by oil activities "- DEMBPETRO. The experiment consisted of a set of eight bioreactors with a volume of 20 L of salt water and a ventilation pump with capacity to pump 3000 L. h-1 was not carried out in a pioneering way, as it was the first experiment of formation of OSAs a be biostimulated. The biosorption unit is a new product, the SPM and the nutrients to salt water have been produced in the laboratory, having been of natural attenuation units to a single year and the SPM and the base units were added to the salt water only SPM and nutrients. Colony counts were counted at 0, 7, 15, 30 and 60 days, and quantification of TPHs as collected was performed at 0, 15, 30 and 60 days. Each time of sampling was withdrawn the anullitis for quantification of the species (nitrate, nitrite, ammonium and phosphate). Among the results found, biostimulated bioreactors were identified, there was a slight increase in the formation of negative buoyancy OSAs, an addition of nutrients in time 7 resulted in a higher growth of CFUs, but in 30 and 60 days the white bioreactors and natural attenuation increased growth . However, for a biodegradation of the TPHs a biostimulation was shown to have a mean of 98.12% degradation compared to 84.61% degradation of the natural attenuation units. Data were significantly significant for a critical analysis of hypersensitivity of TPHs.

MEMBROS DA BANCA:
Presidente - 816.415.245-53 - DANUSIA FERREIRA LIMA - UFBA
Interno - 2897782 - ICARO THIAGO ANDRADE MOREIRA
Interno - 2322888 - OLIVIA MARIA CORDEIRO DE OLIVEIRA
Externo à Instituição - CLAUDIA YOLANDA REYES - UNAMA