Banca de DEFESA: LUIS PAULO LIMA CARDOSO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUIS PAULO LIMA CARDOSO
DATE: 29/03/2022
TIME: 14:00
LOCAL: Webconferência
TITLE:

Preliminary simulation of by-product generation in biological reactors treating vinasse.

KEY WORDS:

Simulations. Renewable energy. Environmental systems.

PAGES: 73
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUBÁREA: Tratamento de Águas de Abastecimento e Residuárias
SUMMARY:

Several problems related to basic sanitation and not meeting the energy demand are currently being faced in Brazil. Thus, anaerobic digestion is shown as a solution, both to meet the demand for residential and commercial waste treatment and to generate electricity indirectly, through methane and hydrogen gas. Therefore, several studies have been conducted in order to verify the potential that each waste has in generating these gases through two approaches: an experimental approach and a mathematical modeling approach, which seeks to simulate the actual behavior of anaerobic digestion in order to provide a saving of time and resources through proper calibration of the models obtained. Among the most promising residues for hydrogen and methane generation are agro-industrial waste, especially those with high amounts of carbohydrates, as is the case of vinasse. Therefore, this study performed a kinetic analysis by calculating the kinetic constants and subsequent simulation of mathematical models, in two continuous fluidized reactors in series (one acidogenic (RALF1) and the other methanogenic (RALF2)), treating agroindustrial waste from sugarcane (vinasse) for the production of methane and hydrogen. For the simulation of the adapted models, the Vensim PLE ® software was used. For each reactor and variable analyzed (COD, butyric acid, acetic acid and propionic acid) the hydraulic behavior of piston flow and complete mixing were considered, and reaction orders 1 for COD and 1 and 2 for the others, were also analyzed in the different TDHs to which they were submitted in the experiment (12 and 16 for RALF1 and 12, 6 and 4 for RALF2). The adherence of the curves generated through the simulations was performed through Pearson's correlation coefficient, which had a strong correlation with values of 0.90 to 1, for the degradation of COD and some situations of the metabolites in question.

BANKING MEMBERS:
Presidente - 1799744 - ANTONIO PEDRO DE OLIVEIRA NETTO
Interna - 1121201 - NELIA HENRIQUES CALLADO
Externa ao Programa - 2040330 - TANIA MARIA GOMES VORONKOFF CARNAUBA
Externa à Instituição - NORMA CANDIDA DOS SANTOS AMORIM - CEFET-Al