Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
INFLUENCE EVALUATION OF INPUT VARIABLES ON A MATHEMATICAL MODEL OF BIOGAS PRODUCTION
Submission Author:
Raflem Santos , DF
Co-Authors:
Raflem Santos, Mario Benjamim Baptista de Siqueira, Armando Caldeira-Pires, Paula Gurgel
Presenter: Raflem Santos
doi://10.26678/ABCM.COBEM2019.COB2019-1663
Abstract
The use of mathematical models in the biofuel industries is becoming essential to predict and optimize the final result and production efficiency of processes. Thus, mathematical models of biogas production are being implemented in the production processes to help in choosing the input values of the reactional parameters of the industrial reactors. In order to evaluate the response of the variables on a mathematical model of biogas, this work has the objective of analyzing the influences of input factors in a mathematical model, using previously evaluated methodology and factorial planning with analysis of variance (ANOVA). The results showed that two variables influenced the result of biogas production, the flow rate (positively), and the coefficient of solid production (negatively). It was also possible to observe a maximum value of biogas production of 48,484.95 m3 d -1 . Also, the temperature did not have a great influence on the model and the final value of biogas production, since it presented a low normalized factor of influence. Moreover, other results also show that the predictive model resulting from factorial planning has a good predictive capacity since the sum of the average squares of the errors were practically null and the confidence level for all the factors was high (p <0.05).
Keywords
Biogas, renewable energy, uasb reactor, mathematical modeling
