Banca de QUALIFICAÇÃO: LEANDRO MONTEIRO DOS SANTOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LEANDRO MONTEIRO DOS SANTOS
DATE: 11/07/2023
TIME: 15:00
LOCAL: Sala do PPGEQ
TITLE:

Application of engineering strategies to optimize dairy wastewater treatment in open system by microalgae

KEY WORDS:

bioremediation, microalgae, whey, wastewater treatment.

PAGES: 59
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Processos Industriais de Engenharia Química
SPECIALTY: Processos Bioquímicos
SUMMARY:

The dairy industry is experiencing significant growth in several countries due to the increasing demand for milk and its derivatives, thereby driving the agricultural sector in both developed and developing nations. However, this increase in dairy production brings about environmental consequences, such as intensive consumption of natural resources, land occupation, and the generation of highly polluting effluents. An additional challenge arises with whey, a liquid byproduct resulting from dairy processing, which requires proper treatment and disposal. Various approaches have been employed to treat dairy industry effluents, including aerobic and anaerobic biological processes, which present promising alternatives. Biological treatment technology, especially using microalgae, emerges as a viable option due to its efficiency in removing organic compounds and reduced operational costs. In this context, the present study aimed to evaluate the potential pollutant removal of whey using the microalga Tetradesmus obliquus in a semi-continuous open system. Chemical Oxygen Demand (COD) removal exhibited a variation of 78.04% to 89.30%, with the 40% whey concentration and 60% feed-back being the most efficient. In contrast, nitrogen (N) removal ranged from 24.05% to 57.28%, while phosphorus (P) removal varied from 42.29% to 77.90%. The results obtained revealed that N and P removal efficiency was lower compared to the efficiency achieved for COD. Therefore, the need to explore additional approaches to improve the removal efficiency of these pollutants is highlighted. One promising option is considering the use of a microalgae consortium in conjunction with other microorganisms. The synergistic combination of these organisms can enhance pollutant degradation and thus increase the treatment process efficiency. Furthermore, the application of appropriate aeration techniques also proves to be a relevant strategy for maximizing N and P removal.

BANKING MEMBERS:
Presidente - 3081569 - CARLOS EDUARDO DE FARIAS SILVA
Interno(a) - 1456420 - RENATA MARIA ROSAS GARCIA ALMEIDA
Externo(a) ao Programa - 1296115 - ALBANISE ENIDE DA SILVA