Numerical modelling of heavy metal dynamics in a river-lagoon system

F. Torres-Bejarano, C. Couder-Castañeda, H. Ram-Rez-León, J. J. Hernández-Gómez, C. Rodr-Guez-Cuevas, I. E. Herrera-Díaz, H. Barrios-Piña

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper describes the development of a two-dimensional water quality model that solves hydrodynamic equations tied to transport equations with reactions mechanisms inherent in the processes. This enables us to perform an accurate assessment of the pollution in a coastal ecosystem. The model was developed with data drawn from the ecosystem found in Mexico's southeast state of Tabasco. The coastal ecosystem consists of the interaction of El Yucateco lagoon with Chicozapote and Tonalá rivers that connect the lagoon with the Gulf of Mexico.The results of pollutants transport simulation in the coastal ecosystem are presented, focusing on toxic parameters for two hydrodynamic scenarios: wet and dry seasons. As it is of interest in the zone, the transport of four metals is studied: Cadmium, Chromium, Nickel, and Lead. In order to address these objectives, a self-posed mathematical problem is solved numerically, which is based on the measured data.The performed simulations show how to characterise metals transport with an acceptable accuracy, agreeing well with measured data in total concentrations in four control points along the water body. Although for the accurate implementation of the hydrodynamic-based water qualitymodel herein presented boundary (geometry, tides, wind, etc.) and initial (concentrations measurements) conditions are required, it poses an excellent option when the distribution of solutes with high accuracy is required, easing environmental, economic, and social management of coastal ecosystems. It ought to be remarked that this constitutes a robust differential equation-based water quality model for the transport of heavy metals. Models with these characteristics are not common to be found elsewhere.

Original languageEnglish
Article number8485031
JournalMathematical Problems in Engineering
Volume2019
DOIs
StatePublished - 1 Jan 2019

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Heavy Metals
Numerical Modeling
Ecosystem
Ecosystems
Heavy metals
Rivers
Hydrodynamics
Water Quality
Water quality
Metals
Water
Tide
Chromium
Reaction Mechanism
Hydrodynamic Equations
Tides
Control Points
Nickel
Pollutants
Pollution

Cite this

Torres-Bejarano, F., Couder-Castañeda, C., Ram-Rez-León, H., Hernández-Gómez, J. J., Rodr-Guez-Cuevas, C., Herrera-Díaz, I. E., & Barrios-Piña, H. (2019). Numerical modelling of heavy metal dynamics in a river-lagoon system. Mathematical Problems in Engineering, 2019, [8485031]. https://doi.org/10.1155/2019/8485031
Torres-Bejarano, F. ; Couder-Castañeda, C. ; Ram-Rez-León, H. ; Hernández-Gómez, J. J. ; Rodr-Guez-Cuevas, C. ; Herrera-Díaz, I. E. ; Barrios-Piña, H. / Numerical modelling of heavy metal dynamics in a river-lagoon system. In: Mathematical Problems in Engineering. 2019 ; Vol. 2019.
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Torres-Bejarano, F, Couder-Castañeda, C, Ram-Rez-León, H, Hernández-Gómez, JJ, Rodr-Guez-Cuevas, C, Herrera-Díaz, IE & Barrios-Piña, H 2019, 'Numerical modelling of heavy metal dynamics in a river-lagoon system', Mathematical Problems in Engineering, vol. 2019, 8485031. https://doi.org/10.1155/2019/8485031

Numerical modelling of heavy metal dynamics in a river-lagoon system. / Torres-Bejarano, F.; Couder-Castañeda, C.; Ram-Rez-León, H.; Hernández-Gómez, J. J.; Rodr-Guez-Cuevas, C.; Herrera-Díaz, I. E.; Barrios-Piña, H.

In: Mathematical Problems in Engineering, Vol. 2019, 8485031, 01.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Torres-Bejarano, F.

AU - Couder-Castañeda, C.

AU - Ram-Rez-León, H.

AU - Hernández-Gómez, J. J.

AU - Rodr-Guez-Cuevas, C.

AU - Herrera-Díaz, I. E.

AU - Barrios-Piña, H.

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Y1 - 2019/1/1

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AB - This paper describes the development of a two-dimensional water quality model that solves hydrodynamic equations tied to transport equations with reactions mechanisms inherent in the processes. This enables us to perform an accurate assessment of the pollution in a coastal ecosystem. The model was developed with data drawn from the ecosystem found in Mexico's southeast state of Tabasco. The coastal ecosystem consists of the interaction of El Yucateco lagoon with Chicozapote and Tonalá rivers that connect the lagoon with the Gulf of Mexico.The results of pollutants transport simulation in the coastal ecosystem are presented, focusing on toxic parameters for two hydrodynamic scenarios: wet and dry seasons. As it is of interest in the zone, the transport of four metals is studied: Cadmium, Chromium, Nickel, and Lead. In order to address these objectives, a self-posed mathematical problem is solved numerically, which is based on the measured data.The performed simulations show how to characterise metals transport with an acceptable accuracy, agreeing well with measured data in total concentrations in four control points along the water body. Although for the accurate implementation of the hydrodynamic-based water qualitymodel herein presented boundary (geometry, tides, wind, etc.) and initial (concentrations measurements) conditions are required, it poses an excellent option when the distribution of solutes with high accuracy is required, easing environmental, economic, and social management of coastal ecosystems. It ought to be remarked that this constitutes a robust differential equation-based water quality model for the transport of heavy metals. Models with these characteristics are not common to be found elsewhere.

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Torres-Bejarano F, Couder-Castañeda C, Ram-Rez-León H, Hernández-Gómez JJ, Rodr-Guez-Cuevas C, Herrera-Díaz IE et al. Numerical modelling of heavy metal dynamics in a river-lagoon system. Mathematical Problems in Engineering. 2019 Jan 1;2019. 8485031. https://doi.org/10.1155/2019/8485031