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Modelling, simulation and optimization of anaerobic acidogenic plug flow reactors

Grant number: 21/01657-0
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): August 01, 2021
Effective date (End): June 30, 2025
Field of knowledge:Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
Principal Investigator:Marcelo Zaiat
Grantee:Pamela Talita do Couto
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:22/10615-1 - Consolidation of the biorefinery concept applied to the biological treatment of wastewater and solid wastes, AP.TEM
Associated scholarship(s):22/00398-3 - Modelling, simulation and optimization of a plug-flow acidogenic reactor, BE.EP.PD

Abstract

Researches for renewable energy sources is increasing considerably nowadays, due to a possible shortage of fossil fuels in the future. In this sense, a promising alternative for clean energy is the treatment of domestic or industrial effluents using the anaerobic digestion process in bioreactors, in which microorganisms degrade complex organic matter and converts it into biogas, hydrogen or methane. Hydrogen, compared to methane, has an even greater interest, since during its combustion process it produces only water as product. In these acidogenic bioreactors, microorganisms degrade different types of substrate and produce hydrogen and organic acids. However, as important as knowing the experimental process of this biogas production, it is also important to perform the mathematical modeling of the process for simulation in other scenarios and to scale up it. The most widely used model for modeling anaerobic processes is the Anaerobic Digestion Model Number 1 (ADM1), proposed in 2002 by the Task Group of the International Water Association. This model was formulated for a complete anaerobic digestion process, in which the final product is methane. However, modifications in its structure were made, thus this model was able to simulate the processing in batch acidogenic reactors. Therefore, further studies are required to use this model for simulations of bioreactors operated continuously and with piston flow. Consequently, there is much researches to be done in this area in the world and, mainly, in Brazil, where there is only one research group being nucleated at the University of São Paulo to work directly with modeling of anaerobic processes. Therefore, the objective of this work is to discretize the ADM1 and incorporate gas-liquid mass transfer equations for simulation of the AnTR (Anaerobic Tubular Reactor), AnSTBR (Anaerobic Structured Bed Reactor) and AnPBR (Anaerobic Packed Bed Reactor) reactors. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
REZENDE, E. G. F.; OLIVEIRA, G. H. D.; COUTO, P. T.; ZAIAT, M.; RIBEIRO, R.. Modeling polyhydroxyalkanoates production from sugarcane vinasse by mixed microbial cultures. JOURNAL OF WATER PROCESS ENGINEERING, v. 53, p. 13-pg., . (21/01657-0, 22/00398-3, 16/01253-8)

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