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Volume 13
Issue 6
10.3390/pr13061655
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Article

Simulation and Parametric Evaluation of Pb (II) Adsorption in a Biomass-Packed Bed Using Isothermal Freundlich–LDF and Langmuir II–LDF Models

by
Angel Villabona-Ortíz
1,*,
Oscar E. Coronado-Hernández
2,* and
Candelaria Tejada-Tovar
1
1
Process Design and Biomass Utilisation Research Group (IDAB), Chemical Engineering Department, Universidad de Cartagena, Avenida del Consulado St. 30, Cartagena de Indias 130015, Colombia
2
Instituto de Hidráulica y Saneamiento Ambiental, Universidad de Cartagena, Cartagena de Indias 130001, Colombia
*
Authors to whom correspondence should be addressed.
Processes 2025, 13(6), 1655; https://doi.org/10.3390/pr13061655
Submission received: 4 April 2025 / Revised: 22 May 2025 / Accepted: 22 May 2025 / Published: 24 May 2025
(This article belongs to the Special Issue Modeling and Optimization for Multi-scale Integration)
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Abstract

The objective of this study was to model an adsorption column bed with biomass residues using computational software to remove Pb (II) at the industrial level and analyse the effects of parametric variation. For this purpose, several simulations of the adsorption column were performed using Aspen Adsorption software, evaluating the effects of varied height, inlet flow rate, and initial concentration on the adsorption process performance. The Langmuir II and Freundlich models are established as isotherm models, and the linear driving force (LDF) model is established as the kinetic model. The findings showed that Freundlich–LDF obtained efficiencies of up to 99.9% and Langmuir II–LDF efficiencies of up to 99.7%. The optimal simulation conditions were a column height of 4 m, an initial Pb (II) concentration of 3000 mg/L, and an inlet flow rate of 250 m3/d. This study presents a novel engineering approach to predict the potential performance of columns packed with organic waste-derived biomasses in multi-scale Pb (II) removal using computer-aided engineering tools.
Keywords: adsorption isotherm; kinetic models; Aspen Adsorption; linear global resistance model; electrolyte non-random two-liquid model adsorption isotherm; kinetic models; Aspen Adsorption; linear global resistance model; electrolyte non-random two-liquid model

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MDPI and ACS Style

Villabona-Ortíz, A.; Coronado-Hernández, O.E.; Tejada-Tovar, C. Simulation and Parametric Evaluation of Pb (II) Adsorption in a Biomass-Packed Bed Using Isothermal Freundlich–LDF and Langmuir II–LDF Models. Processes 2025, 13, 1655. https://doi.org/10.3390/pr13061655

AMA Style

Villabona-Ortíz A, Coronado-Hernández OE, Tejada-Tovar C. Simulation and Parametric Evaluation of Pb (II) Adsorption in a Biomass-Packed Bed Using Isothermal Freundlich–LDF and Langmuir II–LDF Models. Processes. 2025; 13(6):1655. https://doi.org/10.3390/pr13061655

Chicago/Turabian Style

Villabona-Ortíz, Angel, Oscar E. Coronado-Hernández, and Candelaria Tejada-Tovar. 2025. "Simulation and Parametric Evaluation of Pb (II) Adsorption in a Biomass-Packed Bed Using Isothermal Freundlich–LDF and Langmuir II–LDF Models" Processes 13, no. 6: 1655. https://doi.org/10.3390/pr13061655

APA Style

Villabona-Ortíz, A., Coronado-Hernández, O. E., & Tejada-Tovar, C. (2025). Simulation and Parametric Evaluation of Pb (II) Adsorption in a Biomass-Packed Bed Using Isothermal Freundlich–LDF and Langmuir II–LDF Models. Processes, 13(6), 1655. https://doi.org/10.3390/pr13061655

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