Banca de DEFESA: Beatriz Pereira da Costa

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Beatriz Pereira da Costa
DATE: 07/07/2023
TIME: 15:00
LOCAL: Plataforma Microsoft Teams
TITLE:

BIOGAS LIFE CYCLE INVENTORY FOR ELECTRICITY GENERATION: A CASE STUDY IN A DAIRY FARM

KEY WORDS:

Biogas, manure, life cycle inventory, electricity.

PAGES: 55
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUMMARY:

Agricultural and industrial waste management is necessary to mitigate environmental pollution resulting from animal handling. In this context, the waste from this activity can generate energy, turning a substrate with a high potential for polluting the environment into a product with more excellent added value, such as biogas. The consolidated methodology of the Life Cycle Assessment (LCA) can quantify the environmental impacts of these processes, ranging from the origin of the waste to the production and use of biogas, which has a significant energy potential and can provide information on possible bottlenecks in production. Within the phases of the LCA, the collection of inventory data, input and output data, the definition of boundaries, and functional units must be defined in detail before building the model. The more detailed the inventory, the greater the accuracy of decision-making about the analyzed processes. Thus, the present study used the ISO 14040 and 14044 standards for making the Life Cycle Inventory (LCI). Therefore, this study aims to develop a LCI of biogas production for electricity generation, using dairy cattle manure as raw material. The elaboration of the ICV took place through the collection of local data on a farm with activities focused on dairy cattle and its biogas production. The results of the LCI showed local data on the daily production of waste, biogas, electricity, and co-products, where 11.1915 kg of waste generate 0.65612 Nm³ of biogas, providing 1 kWh of electricity, adopted as a functional unit, with reuse of co-products, which include solid waste and biofertilizer. Manure management and biogas engine emissions were also estimated and compared using data from the literature. In addition to presenting financial savings of 95% per KWh, biogas provided lower emissions compared to diesel, highlighting its importance and functionality as a source of electrical energy.

BANKING MEMBERS:
Interno - 3138349 - EDGAR AMARAL SILVEIRA
Interno - 2245668 - MARIO BENJAMIM BAPTISTA DE SIQUEIRA
Presidente - 1720225 - SANDRA MARIA DA LUZ
Externo à Instituição - THIAGO OLIVEIRA RODRIGUES - IBICT