Banca de QUALIFICAÇÃO: JACOB SANTANA DE LIMA NETO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : JACOB SANTANA DE LIMA NETO
DATE: 11/12/2023
TIME: 14:00
LOCAL: Galpão de Hidráulica
TITLE:

CULTIVATION OF MICROALGAE IN PHOTOBIOREACTORS FOR BIOREMEDIATION OF SOY MILK WASTEWATER AND PRODUCTION OF BIOPRODUCTS

KEY WORDS:

biofuels, wastewater treatment, CO₂ biofixation.

PAGES: 19
BIG AREA: Ciências Agrárias
AREA: Engenharia Agrícola
SUBÁREA: Engenharia de Água e Solo
SPECIALTY: Conservação de Solo e Água
SUMMARY:

Climate change has been causing increasingly significant impacts on the planet and our society. As a result, it is imperative that new technologies be developed not only to mitigate existing environmental damage but also to prevent new ones. With this purpose, this study aims to utilize residual water from cattle farming as a cultivation medium for microalgae in photobioreactors, thereby generating bioproducts. The residual water (RW) used in this study was pre-treated through sedimentation, and an inoculum containing a mix of microalgae including Arthrospira platensis DHR 20, Chlorella sp., Scenedesmus sp., and Euglena sp. was employed. Two different experimental conditions were analyzed: control, where no interventions occurred, and CO2 control, where CO2 was added to the photobioreactors. The quality of the residual water will be determined through laboratory analyses. The kinetic parameters of the photobioreactors, doubling time, and maximum growth rate were determined. Extraction of lipids, proteins, and carbohydrates will be carried out to estimate the production of biofuels from the generated biomass. Lastly, the estimation of CO2 biofixation will be based on the carbon concentration present in the biomass. Preliminary results indicate that the treatments removed nutrients, especially COD and ammonia nitrogen. Furthermore, the addition of CO2 exhibited a trend of reducing the doubling time, which could potentially lead to smaller areas required for the photobioreactors. However, more in-depth analyses of the results will be conducted in the upcoming stages of the project. Using the percentage of lipids, proteins, and carbohydrates, the production of biofuels will be estimated. CO2 biofixation will be calculated based on the carbon concentration present in the biomass. By the end of the project, it is anticipated that results will contribute to the bioeconomy and circular economy, through the generation of biofuels produced from the treatment of residual water from cattle farming using microalgae.

COMMITTEE MEMBERS:
Presidente - 1133133 - HENRIQUE VIEIRA DE MENDONCA
Externa ao Programa - 1522432 - MARISA FERNANDES MENDES - UFRRJExterna à Instituição - RENATA DE NAZARÉ VILAS BÔAS - UFRRJ