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Sorption Mechanism Of Anionic Dyes On Pecan Nut Shells (Carya Illinoinensis) Using Batch And Continuous Systems, Ismael A. Aguayo-Villarreal, Luis A. Ramírez-Montoya, Virginia Hernández-Montoya, Adrian Bonilla-Petriciolet, Miguel A. Montes-Morán, Elsa M. Ramírez-López

Adrian Bonilla-Petriciolet

The biomass derived from pecan nut processing (Carya illinoinensis) fro alimentary purpose, specifically the pecan shells were used in this work as a biosorbent of acid blue 74 (AB74), acid blue 25 (AB25) and reactive blue 4 (RB4). This biomass was characterized by ultimate and proximate analysis. FT-IR spectroscopy, X-ray diffraction and SEM/EDX. Adsorption studies were performed in batch and continuous systems and adsorption kinetics, isotherms and breakthrough curves were experimentally determined. Results obtained suggest that the calcium compounds occurring in pecan shells are responsible of the favorable adsorption of anionic dyes, specifically for the removal of AB74. Biosorption results …

Modeling Of Fixed-Bed Adsorption Of Fluoride On Bone Char Using A Hybrid Neural Network Approach, Rigoberto Tovar-Gómez, Ma. Del Rosario Moreno-Virgen, José Alonso Dena-Aguilar, Virginia Hernández-Montoya, Adrian Bonilla-Petriciolet, Miguel A. Montes-Moran

Adrian Bonilla-Petriciolet

This study introduces a hybrid model based on the Thomas equation and artificial neural networks (ANNs) for the modeling of unsymmetrical breakthrough curves obtained from the fluoride adsorption on bone char. Experimental results of kinetics, isotherms and breakthrough curves of fluoride adsorption on two commercial bone chars have been used for analyzing the capabilities and limitations of this hybrid ANN model. Performance of this hybrid model has been studied and compared with respect to the results of traditional linear regression of the Thomas breakthrough equation at different operating conditions of packed-bed adsorption columns. Results showed that an improvement in the …

Assessment Of Capabilities And Limitations Of Stochastic Global Optimization Methods For Modeling Mean Activity Coefficients Of Ionic Liquids, Adrian Bonilla-Petriciolet, Seif-Eddeen K. Fateen, Gade Pandu Rangaiah

Adrian Bonilla-Petriciolet

In this paper, we have studied and analyzed the capabilities and limitations of seven stochastic global optimization methods to model mean activity coefficients of ammonium aqueous electrolytes using the electrolyte NRTL model. These stochastic methods are: simulated annealing (SA), genetic algorithm (GA), differential evolution (DE), particle swarm optimization (PSO), DE with tabu list (DETL), harmony search (HS) and bare bones PSO (BBPSO). Convergence characteristics and performances of these optimization methods have been tested and compared using different stopping conditions. Overall, our results indicate that SA, DETL and BBPSO offer better performance and promising convergence characteristics for solving parameter estimation problems …

An Improved Ant Colony Optimization Method And Its Application For The Thermodynamic Modeling Of Phase Equilibrium, Jorge A. Fernández-Vargas, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernández

Adrian Bonilla-Petriciolet

Ant Colony Optimization (ACO) is a stochastic optimization method that emulates the indirect communication among the individuals of an ant colony. This multi-agent strategy has been used to solve optimization problems from engineering applications, especially for combinatorial problems. Although ACO seems to be effective for global optimization, only few ACO algorithms have been reported for solving engineering applications problems with continuous decision variables. In this study, a new continuous ACO algorithm, with feasible region selection, has been implemented and applied to perform thermodynamic calculations related to the modeling of phase equilibrium. In particular, the numerical capabilities of this ACO algorithm …

Design, Optimization And Control Of An Alternative Process Based On Extractive Distillation For The Sweetening Of Natural Gas, Carlos E. Torres-Ortega, Juan Gabriel Segovia-Hernandez, Fernado I. Gomez-Castro, Salvador Hernandez, Adrian Bonilla-Petriciolet, Ben-Guang Rong, Massimiliano Errico

Adrian Bonilla-Petriciolet

Alternative configurations based on cryogenic extractive distillation for the natural gas sweetening process were proposed and simulated by using Aspen Plus One 7.0 coupled to a multi-objective stochastic optimization procedure (Differential Evolution, DE). The evaluation of the performances of the proposed configurations was focused on the carbon dioxide-ethane azeotrope separation considering different liquefied hydrocarbon fractions as entrainers. The design alternatives were compared to the conventional chemical absorption system. The proposed sequences were simultaneously optimized by minimizing the Total Annual Cost (TAC) and maximizing the acid gas removal. Complementary studies regarding the theoretical control properties, thermodynamic efficiency and greenhouse gases generation …

Synergic Adsorption In The Simultaneous Removal Of Acid Blue 25 And Heavy Metals From Water Using A Ca(Po3)2-Modified Carbon, Rigoberto Tovar-Gomez, Dulce Rivera-Ramirez, Virginia Hernandez-Montoya, Adrian Bonilla-Petriciolet, Carlos Duran-Valle, Miguel A. Montes-Moran

Adrian Bonilla-Petriciolet

We report the simultaneous adsorption of acid blue 25 dye (AB25) and heavy metals (Zn2+, Ni2+ and Cd2+) on a low-cost activated carbon, whose adsorption properties have been improved via a surface chemistry modification using a calcium solution extracted from egg shell wastes. Specifically, we have studied the removal performance of this adsorbent using the binary aqueous systems: AB25 - Cd2+, AB25 - Ni2+ and AB25 - Zn2+. Multi-component kinetic and equilibrium experiments have been performed and used to identify and characterize the synergic adsorption in the simultaneous removal of these pollutants. Our results show that the presence of AB25 …

Optimizing The Removal Of Fluoride From Water Using New Carbons Obtained By Modification Of Nut Shell With A Calcium Solution From Egg Shell, Virginia Hernandez-Montoya, Luis A. Ramirez-Montoya, Adrian Bonilla-Petriciolet, Miguel A. Montes-Moran

Adrian Bonilla-Petriciolet

Carbons loaded with specific chemical moieties were prepared from pecan nut shells employing a natural modifier agent obtained from egg shell, which is rich in calcium, for the selective adsorption of fluoride from water. A L4 orthogonal array of the Taguchi method was used to optimize the synthesis conditions for obtaining these selective carbons. The samples obtained were characterized and the elemental composition, textural parameters and morphology were determined. Fluoride adsorption experiments were performed in synthetic and real groundwater samples. Results showed that carbons obtained from pecan nut shells modified with a calcium solution extracted from egg shells (CMPNS) were …

Global Gibbs Free Energy Minimization In Reactive Systems Via Harmony Search, Adrian Bonilla-Petriciolet, Ma. Del Rosario Moreno-Virgen, Juan Jose Soto-Bernal

Adrian Bonilla-Petriciolet

Phase equilibrium calculations in systems subject to chemical reactions play a major role in the design of reactive separation schemes including chemical reaction engineering. Basically, these calculations involve the global minimization of Gibbs free energy constrained by the material balances and chemical equilibrium restrictions. However, Gibbs free energy function is non-convex, highly non-linear with many decision variables, and may have several local minimums including trivial and nonphysical solutions. In these conditions, conventional numerical methods are not suitable for solving reactive phase equilibrium problems. Recently, there has been a significant and increasing interest in the development of global strategies for reliably …

Analysis And Prediction Of Input Multiplicity For The Reactive Flash Separation Using Reaction-Invariant Composition Variables, Jose E. Jaime-Leal, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernandez, Salvador Hernandez, Hector Hernandez-Escoto

Adrian Bonilla-Petriciolet

In this study, we introduce a new approach for predicting and analyzing the input multiplicity in reactive flash separation processes. Specifically, we have identified necessary conditions to detect these multiple states in reactive flash separations using reaction-invariant composition variables. The presence of the input multiplicity is studied for the reactive systems of MTBE and TAME production to illustrate the capabilities of our methodology. For these reactive systems, we report the existence of multiple states for different operating conditions. In summary, our strategy can be applied with any reactive system and thermodynamic model, assuming that all reactions are reversible and in …

Competitive Sorption Of Pb, Cd And Ni From Binary Aqueous Solutions By Chicken Feathers, Hilda Elizabeth Reynel-Avila, Adrian Bonilla-Petriciolet, Guadalupe De La Rosa

Adrian Bonilla-Petriciolet

In this paper, we report the competitive removal of Pb, Cd and Ni ions from binary metal solutions using chicken feathers. These heavy metals are very toxic for human being and are present in wastewaters of several industrial activities. Therefore, multi-component sorption studies are required to identify the capabilities and limitations of chicken feathers as low-cost sorbent for the simultaneous removal of these metal ions from wastewaters. To the best of our knowledge, sorption equilibrium studies involving chicken feathers and Pb, Cd and Ni in binary aqueous solutions have not been reported. Therefore, the binary sorption data for systems Pb …

Purification Of Bioethanol Using Extractive Batch Distillation: Simulation And Experimental Studies, Juan Angel Pacheco-Basulto, Diego Hernandez-Mcconville, Fabricio Omar Barroso-Muñoz, Salvardor Hernandez, Juan Gabriel Segovia-Hernandez, Agustin Jaime Castro-Montoya, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

Among biofuels, bioethanol has increased in importance in many countries because it can be used directly or mixed with gasoline in combustion engines. The production of bioethanol in a fermentative process usually gives a dilute solution from which the bioethanol must be obtained in high concentration in order to be used as biofuel. The separation of an azeotropic mixture of ethanol and water using batch and semi-batch distillation was studied considering ethylene glycol and ionic liquids as entrainers. The simulation and experimental results indicate that the separation is favored using ethylene glycol in comparison to the use of ionic liquid; …

Evaluation Of Covariance Matrix Adaptation Evolution Strategy, Shuffled Complex Evolution And Firefly Algorithms For Phase Stability, Phase Equilibrium And Chemical Equilibrium Problems, Seif-Eddeen Fateen, Adrian Bonilla-Petriciolet, Gade Pandu Rangaiah

Adrian Bonilla-Petriciolet

Phase equilibrium calculations and phase stability analysis of reactive and non-reactive systems play a significant role in the simulation, design and optimization of reaction and separation processes in chemical engineering. These challenging problems, which are often multivariable and non-convex, require global optimization methods for solving them. Stochastic global optimization algorithms have shown promise in providing reliable and efficient solutions for these thermodynamic problems. In this study, we evaluate three alternative global optimization algorithms for phase and chemical equilibrium calculations, namely, Covariant Matrix Adaptation-Evolution Strategy (CMA-ES), Shuffled Complex Evolution (SCE) and Firefly Algorithm (FA). The performance of these three stochastic algorithms …

Desarrollo De Microfibras De Carbón De Baja Pureza Y Su Evaluación En La Eliminación De Metales Pesados Del Agua, Juan Carlos Tapia-Picazo, David Vásquez Chávez, Adrian Bonilla-Petriciolet, Antonio Champion Coria, Alberto Alvarez-Castillo, J. Gabriel Luna-Bárcenas

Adrian Bonilla-Petriciolet

En este trabajo se presenta el desarrollo de un proceso de fabricación de microfibras de carbón que permite el control de diferentes niveles de pureza y propiedades fisico-químicas de las mismas, para poder utilizarlas en aplicaciones especiales. El proceso de producción incluye las etapas de reacción, hilatura y carbonización. Se reportan los resultados de la evaluación y caracterización de las microfibras de carbón obtenidas en la remoción de metales pesados en agua.

On The Capabilities And Limitations Of Harmony Search For Parameter Estimation In Vapor-Liquid Equilibrium Modeling, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

The modeling of vapor-liquid equilibrium data using local composition models is an interesting and challenging global optimization problem in the context of chemical engineering and applied thermodynamics. Until now, several deterministic and stochastic global optimization strategies have been used for modeling vapor-liquid equilibrium (VLE) data. Stochastic optimization methods may offer several advantages for solving global optimization problems and, until now, some meta-heuristics have been tested for modeling phase equilibrium data. However, these optimization strategies usually show a robust performance but, in some challenging problems, they may fail to locate the global optimum. In particular, Harmony Search (HS) is a direct-search …

Laser Radiation Co2 Effects In Cement Paste At Different Hydration Stages, María Del Rosario Moreno-Virgen, Juan Jose Soto-Bernal, Claudio Frausto-Reyes, Adrian Bonilla-Petriciolet, Jose T. Vega-Duran, Jorge Pineda-Piñon, José Angel Ortíz-Lozano

Adrian Bonilla-Petriciolet

In this work the changes occurring in cement pastes irradiated by 10.6µm CO2 laser at diff erent stages of hydration after preparation are presented. Raman spectroscopy, X-ray diffraction and Scanning Electronic Microscopy (SEM) techniques were used to observe molecular structural changes. Intensity of cement paste Raman peaks after laser irradiation was monitored in samples irradiated 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 days after their preparation. Applied laser power changed Raman peaks intensity at 187.5cm-1, 563cm-1, 695cm-1, 750cm-1, 897cm-1, 1042cm-1 and 1159cm-1 that correspond to compounds already present in cement pastes. X-ray diffraction, SEM images and …

Ant Colony Optimization: A New Stochastic Solver For Modeling Vapor-Liquid Equilibrium Data, Jorge A. Fernández-Vargas, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernández, Salvador Hernández-Castro

Adrian Bonilla-Petriciolet

In this study, a new stochastic global optimization method based on Ant Colony Optimization (ACO) has been developed and used to solve the parameter estimation problem in vapor-liquid equilibrium data modeling. ACO is a relatively novel stochastic optimization method that mimics foraging behavior of ant colonies. We have developed a new version of ACO, which employs feasible region selection, for performing global optimization in problems with continuous decision variables. The performance of this new ACO has been tested in the modeling of vapor-liquid equilibrium data using both the classical least squares and error-in-variable formulations. Our results show that this new …

Constrained And Unconstrained Gibbs Energy Minimization In Reactive Systems Using Genetic Algorithms And Differential Evolution With Tabu List, Adrian Bonilla-Petriciolet, Gade Pandu Rangaiah, Juan Gabriel Segovia-Hernandez

Adrian Bonilla-Petriciolet

Phase equilibrium modeling plays an important role in design, optimization and control of separation processes. The global optimization problem involved in phase equilibrium calculations is very challenging due to the high non-linearity of thermodynamic models especially for multi-component systems subject to chemical reactions. To date, a few attempts have been made in the application of stochastic methods for reactive phase equilibrium calculations compared to those reported for non-reactive systems. In particular, the population-based stochastic methods are known for their good exploration abilities and, when optimal balance between the exploration and exploitation is found, they can be reliable and efficient global …

A Short Method To Calculate Residue Curve Maps In Multireactive And Multicomponent Systems, Marcelino Carrera-Rodriguez, Juan Gabriel Segovia-Hernández, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

Reactive residue curve maps (RRCM) are useful for the design of reactive distillation columns as a tool to establish feasible zones of reaction-separation. However, the calculation of RRCM usually involves great computational effort due to the nonlinearity of the model equations and its iterative nature for the determination of reactive phase equilibrium. In this study, a simplified method for the generation of RRCM is presented. This method is based on the application of reaction-invariant composition variables and assumes that the phase equilibrium constants (i.e., the relative volatilities) are independent of the temperature. Specifically, the phase equilibrium constants are calculated using …

Free Radicals Copolymerization Optimization, System: Acrylonitrile-Vinyl Acetate In Cstr, Silvia V. Vallecillo-Gomez, Juan C. Tapia-Picazo, Adrian Bonilla-Petriciolet, Gibran G. De-Alba-Perez-De-Gracia

Adrian Bonilla-Petriciolet

In this work, we study the free radicals solution copolymerization, system acrylonitrile (AN) – vinyl acetate (VA), with the objective to find the parameters of characteristic correlations that are used to determine the reaction autoacceleration phenomenon or gel effect. Two gel effect correlations were evaluated for each monomer. Parameters were found using the stochastic global optimization Simulated Annealing method and experimental data in batch reactor. Gel effect correlations with greater adjustment were used to carry out a sensitivity analysis through continuous stirred tank reactor model. A competence between monomers conversion, average molecular weight of the polymer and the polidispersity was …

Novel Bare-Bones Particle Swarm Optimization And Its Performance For Modeling Vapor-Liquid Equilibrium Data, Haibo Zhang, Devid D. Kennedy, Gade Pandu Rangaiah, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

Parameter estimation in models plays a significant role in developing mathematical models which are used for understanding and analyzing physical, chemical and biological systems. Parameter estimation problems for vapor–liquid equilibrium (VLE) data modeling are very challenging due to the high nonlinearity of thermodynamic models. Recently, stochastic global optimizations and their applications to these problems have attracted greater interest. Of the many stochastic global optimization methods, Bare bones particle swarm optimization (BBPSO) is attractive since it has no parameters to be tuned by the user. In this study, modifications are introduced to the original BBPSO using mutation and crossover operators of …

Batch And Column Studies Of Zn2+ Removal From Aqueous Solution Using Chicken Feathers As Sorbents, Ismael Alejandro Aguayo-Villarreal, Adrian Bonilla-Petriciolet, Virginia Hernández-Montoya, Miguel A. Montes-Morán, Hilda Elizabeth Reynel-Avila

Adrian Bonilla-Petriciolet

We report the removal of zinc ions from aqueous solution by raw chicken feathers using both batch and continuous systems. Specifically, kinetic and sorption isotherms have been determined considering the effect of temperature, pH and metal concentration. Batch sorption data were fitted to various sorption models and results indicate that Zn2+ sorption process using raw chicken feathers followed the pseudo-second order rate model, while sorption isotherms were described properly by Sips isotherm. Sorption isotherms show that the experimental maximum sorption capacity of Zn2+ was found to be 4.31 mg/g at 30 °C and pH 5 and that chemisorption may play …

Role Of The Pericarp Of Carya Illinoinensis As Biosorbent And Precursor Of Activated Carbon For The Removal Of Lead And Acid Blue 25 In Aqueous Solution, Virginia Hernández-Montoya, Didilia I. Mendoza-Castillo, Adrian Bonilla-Petriciolet, María Ana Pérez-Cruz, Miguel A. Montes-Moran

Adrian Bonilla-Petriciolet

The pecan nuts are widely cultivated in states of north of Mexico and the residues generated during nut processing are abundant and not reused. In the present study, the pericarp of pecan (PP) was physicochemically characterized and their use as low cost biosorbent of lead and acid blue 25 was studied in batch systems at different experimental conditions. Also, the PP was used as precursor of activated carbon and a natural modifier agent extracted from egg shells was used in the synthesis of the carbons. Results suggest that the pericarp of pecan (PP) has an acidic character due to the …

Improving The Adsorption Of Heavy Metals From Water Using Commercial Carbons Modified With Egg Shell Wastes, Alejandro Guijarro-Aldaco, Virginia Hernandez-Montoya, Adrian Bonilla-Petriciolet, Miguel A. Montes-Moran, Didilia I. Mendoza-Castillo

Adrian Bonilla-Petriciolet

We introduce the application of hen egg shell waste to improve the adsorption capacities of heavy-metal ions using commercial carbons via the modification of their surface chemistry. Specifically, a calcium solution extracted from egg shell waste has been used as a low-cost activation agent to improve the adsorption properties of three commercial carbons. An orthogonal array of the Taguchi method has been applied to identify the optimal conditions for the adsorbent modification process using the Zn batch adsorption, at 30 °C and pH 5, as the response variable. Our results show that maximum adsorption capacities of Cd, Ni, and Zn …

Kinetic And Thermodynamic Modeling Of Cd+2 And Ni+2 Biosorption By Raw Chicken Feathers, Hilda E. Reynel-Avila, Guadalupe De La Rosa, Cintia Karina Rojas-Mayorga, Irene Cano-Aguilera, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

Batch experiments were performed to model kinetic and thermodynamic data for Cd and Ni biosorption by raw chicken feathers (CFs) under different conditions. Results indicated that Cd and Ni sorption onto CFs occurred on the external surface of the biosorbent. Ion removal increased with pH, whereas both endothermic and exothermic stages where observed depending on temperature. Our calculated thermodynamic parameters showed that, below the temperature of 30°C, the metal uptake of Cd and Ni ions may be mainly controlled by a chemisorption process. However, for temperatures higher than 30°C, it is likely that sorption of both metals onto CFs is …

Integrated Differential Evolution For Global Optimization And Its Performance For Modeling Vapor-Liquid Equilibrium Data, Haibo Zhang, Gade Pandu Rangaiah, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

Parameter estimation in thermodynamic models has been of great interest in chemical engineering due to its complex nature such as non-linearity, flat objective function in the neighborhood of global optimum, badly scaled model and non-differential term(s) in the equations. In this paper, a stochastic global optimization algorithm, named, integrated differential evolution (IDE) is introduced to solve the parameter estimation problems for modeling vapor-liquid equilibrium (VLE) data. In IDE, the choice of mutation strategy and associated parameters are adapted according to the learning experience from previous generations. The tabu list used in IDE can avoid revisiting the same area and avoid …

Copolimerizacion Injertada De Almidón Con Poli(Acrilonitrilo) Y Acetato De Vinilo Mediante Radicales Libres En Solución: Síntesis Y Caracterización, Jose A. Dena-Aguilar, Juan Jauregui-Rincon, Adrian Bonilla-Petriciolet, Iliana Ernestina Medina-Ramirez, Jorge Romero-Garcia

Adrian Bonilla-Petriciolet

En este estudio, copolímeros injertados de almidón (ALM) con acrilonitrilo (AN) y acetato de vinilo (AV) (PAN-co-ALM) fueron preparados mediante métodos de copolimerización injertada en solución bajo una atmósfera oxidante normal (en presencia de aire). Las reacciones de injerción fueron iniciadas por procesos de radicales libres, empleando persulfato de amonio (PA) y bisulfito de sodio (BS) como iniciadores. Se determinó que el rendimiento de injerción (%G) es dependiente de las concentraciones de almidón y de los iniciadores considerados. Las muestras de copolímeros de PAN-co-ALM fueron caracterizadas por gravimetría, técnicas de espectroscopia infrarroja con transformada de Fourier (FTIR), microscopia electrónica de …

Short-Cut Method For The Design Of Reactive Distillation Columns, Marcelino Carrera-Rodriguez, Juan Gabriel Segovia-Hernandez, Adrian Bonilla-Petriciolet

Adrian Bonilla-Petriciolet

The design of Reactive Distillation (RD) has received significant attention due to the technological and economical advantages obtained from the simultaneous occurrence of reaction and separation. Although these advantages of RD are well documented in literature, the commercial applications of RD are still limited because of the control and operation complexity of these separation systems and the need for improving software tools to reliably model and design RD columns. In this study, a robust short-cut method for the design of multicomponent reactive distillation is presented. This method is based on distillation lines and tray-by-tray calculations defined in terms of reaction-invariant …

A Review On Global Optimization Methods For Phase Equilibrium Modeling And Calculations, Haibo Zhang, Adrian Bonilla-Petriciolet, Gade Pandu Rangaiah

Adrian Bonilla-Petriciolet

The phase equilibrium modeling for multi-component systems is essential in process systems engineering. In particular, phase stability analysis, Gibbs free energy minimization and estimation of parameters in thermodynamic models are challenging global optimization problems involved in phase equilibrium calculations and modeling for both reactive and non-reactive systems. To date, many significant works have been performed in the area of global optimization, and several algorithms and computational contributions of global optimization have been used for solving these problems; global optimization methods used include both deterministic and stochastic algorithms. To the best of our knowledge, there is no review in the literature …

Evaluation Of Integrated Differential Evolution And Unified Bare-Bone Particle Swarm Optimization On Phase And Chemical Equilibrium And Phase Stability Problems, Haibo Zhang, Jorge A. Fernandez-Vargas, Gade Pandu Rangaiah, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernández

Adrian Bonilla-Petriciolet

Evaluation Of Stochastic Global Optimization Methods For Modeling Vapor-Liquid Equilibrium Data, Adrian Bonilla-Petriciolet, Gade Pandu Rangaiah, Juan Gabriel Segovia-Hernández

Adrian Bonilla-Petriciolet

Parameter estimation for vapor–liquid equilibrium (VLE) data modeling plays an important role in design, optimization and control of separation units. This optimization problem is very challenging due to the high non-linearity of thermodynamic models. Recently, several stochastic optimization methods such as Differential Evolution with Tabu List (DETL) and Particle Swarm Optimization (PSO) have evolved as alternative and reliable strategies for solving global optimization problems including parameter estimation in thermodynamic models. However, these methods have not been applied and compared with respect to other stochastic strategies such as Simulated Annealing (SA), Differential Evolution (DE) and Genetic Algorithm (GA) in the context …