Banca de DEFESA: ANDREZA HELOIZA DA SILVA GONÇALVES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANDREZA HELOIZA DA SILVA GONÇALVES
DATE: 31/03/2023
TIME: 09:00
LOCAL: Videoconferência – Plataforma Google Meet
TITLE:

USING THE FUNGUS-MICROALGA SYMBIOSIS IN THE

TREATMENT OF OIL INDUSTRY EFFLUENT

KEY WORDS:

Petroleum; microalgae; filamentous fungus; symbiotic relation
and biotechnology.

PAGES: 65
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

The main effluent generated by oil exploration is produced
water, which has a high amount of oil and grease, chemical
oxygen demand (COD) and other compounds such as
surfactants, nitrogenous compounds, phosphates, etc. With this,
the work proposes to verify, the potentiality of treatment of the oil
produced water, using the combined treatment of fungi and
microalgae. In this symbiosis, the fungus consumes the
photosynthetic carbohydrate provided by the alga as sugars and
other nutrients/growth factors, in addition to the hydrocarbons
present in the effluent, and in return, the fungus provides
protection for the alga, retaining water and serving as a larger
area of capture of mineral nutrients, mainly nitrogenous
components and phosphorus present in the effluent. In view of
the above, the objective of the study is to evaluate the effects of
concentrations of the contaminant (oil) between 100-2000 mg/L
and salinity 5- 50 g/L, using synthetic and real effluent,
associated with the microalgae Tetradesmus obliquus and the
filamentous fungi Aspergillus niger, Penicillium oxalicum and
Cunninghamella echinulata. Through the experiments carried
out, it was possible to verify the removal of 98% oil and grease
content (TOG), using the fungus Cunninghamella echinulata
(with or without microalgae) and a biomass production of around
250 and 550 mg L-1 when performed without and with co-
cultivation, respectively. The need for pH control was shown
when the fungus is cultivated in combination with the
microalgae. In addition to the Cunninghamella fungus, it has a
high salinity tolerance, between 5-50g/L.

BANKING MEMBERS:
Externo(a) ao Programa - 3081569 - CARLOS EDUARDO DE FARIAS SILVA
Interno(a) - 2089941 - DIMAS JOSE DA PAZ LIMA
Presidente - 1121401 - JOSEALDO TONHOLO
Externo(a) ao Programa - 1456420 - RENATA MARIA ROSAS GARCIA ALMEIDA