Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8420
Type: Artigo
Title: Inverse problem analysis for identification of reaction kinetics constants in microreactors for biodiesel synthesis
Author(s)/Inventor(s): Pontes, Péricles Crisiron
Naveira-Cotta, Carolina Palma
Abstract: Indisponível.
Abstract: The theoretical analysis for the design of microreactors in biodiesel production is a complicated task due to the complex liquid-liquid flow and mass transfer processes, and the transesterification reaction that takes place within these microsystems. Thus, computational simulation is an important tool that aids in understanding the physical-chemical phenomenon and, consequently, in determining the suitable conditions that maximize the conversion of triglycerides during the biodiesel synthesis. A diffusive-convective-reactive coupled nonlinear mathematical model, that governs the mass transfer process during the transesterification reaction in parallel plates microreactors, under isothermal conditions, is here described. A hybrid numerical-analytical solution via the Generalized Integral Transform Technique (GITT) for this partial differential system is developed and the eigenfunction expansions convergence rates are extensively analyzed and illustrated. The heuristic method of Particle Swarm Optimization (PSO) is applied in the inverse analysis of the proposed direct problem, to estimate the reaction kinetics constants, which is a critical step in the design of such microsystems. The results present a good agreement with the limited experimental data in the literature, but indicate that the GITT methodology combined with the PSO approach provide a reliable computational algorithm for direct-inverse analysis in such reactive mass transfer problems.
Keywords: Microreactors
Biodiesel
Generalized Integral Transform Technique
Fluid Flow
Particle Swarm Optimization
Mass transfer
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Department : Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: IOP Publishing
In: Journal of Physics: Conference Series
Volume: 745
Issue Date: 10-May-2016
DOI: 10.1088/1742-6596/745/3/032101
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 1742-6588
Appears in Collections:Engenharias

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