Banca de DEFESA: Daniel Augusto Santos Prates Beltrão

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Daniel Augusto Santos Prates Beltrão
DATE: 17/08/2023
TIME: 14:30
LOCAL: Sala de Informática do PTARH com Transmissão pela Plataforma MS Teams
TITLE:

Removal of Phosphorus from Effluent of Wastewater Treatment Plant Brasília Norte by Adsorption Using Core@Shell Bimagnetic Nanoadsorbents (CoFe2O4@γ-Fe2O3)

KEY WORDS:

Removal of phosphorus. Adsorption. Magnetic Nanoadsorbents. Real Wastewater.

PAGES: 90
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUBÁREA: Recursos Hídricos
SUMMARY:

Phosphorus (P) is an essential nutrient for being organisms; however, its presence in incompatible concentrations causes adverse effects on water bodies. Furthermore, P is a non-renewable resource employed in the industry and agriculture and may become depleted in the future. Thus, the potential for recovery P in wastewater has sparked significant scientific interest due to the dual benefit of reducing its discharge's impacts and recovering this nutrient. In this context, the current study aimed to assess P removal through adsorption using bimagnetic core@shell nanoadsorbents of the CoFe₂O₄@γ-Fe₂O₃ type, which allows for P removal and recovery. The effluent from the sludge dewatering centrifuge at the Brasília Norte Wastewater Treatment Plant, operated by Caesb, with an average concentration above 50 mg/L, exhibited the highest potential for P removal and recovery. Through the application of nanoparticles in bench-scale experiments, removal percentages of up to 35% were achieved in 180 minutes, maintaining the natural conditions of collected samples. The pseudo-second-order model exhibited the best fit to the experimental kinetic data, with a half-life time of around 4.64 minutes. It was observed that pH and the possible presence of interferents were the factors that most affected P adsorption when the natural effluent conditions were maintained. Nonetheless, the technology proved promising for the potential removal and recovery of P in real effluents, which can amount in Wastewater Treatment Plants exceeds several tons per year, as is the case with the Brasília Norte Wastewater Treatment Plant.

COMMITTEE MEMBERS:
Externo à Instituição - FERNANDO HERMES PASSIG - UTFPR
Presidente - 1512988 - ARIUSKA KARLA BARBOSA AMORIM
Interna - 1122604 - CRISTINA CELIA SILVEIRA BRANDAO
Interna - 1646057 - YOVANKA PEREZ GINORIS