Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan
This research presents a detailed numerical modeling study focused on estimating the concentration of microplastics (MPs) in freshwater ecosystems. This research covers three lakes (Kopa, Zerendinskoye, and Borovoe) and the Yesil River, applying differential equations to model the spatial distributi...
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MDPI AG
2025-04-01
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| Series: | Hydrology |
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| Online Access: | https://www.mdpi.com/2306-5338/12/4/93 |
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| author | Natalya S. Salikova María-Elena Rodrigo-Clavero Lyudmila A. Makeyeva Zinep M. Shaimerdenova Javier Rodrigo-Ilarri |
| author_facet | Natalya S. Salikova María-Elena Rodrigo-Clavero Lyudmila A. Makeyeva Zinep M. Shaimerdenova Javier Rodrigo-Ilarri |
| author_sort | Natalya S. Salikova |
| collection | DOAJ |
| description | This research presents a detailed numerical modeling study focused on estimating the concentration of microplastics (MPs) in freshwater ecosystems. This research covers three lakes (Kopa, Zerendinskoye, and Borovoe) and the Yesil River, applying differential equations to model the spatial distribution and seasonal variations in MP concentrations. The methodology integrates field survey data collected during three different seasons (spring, summer, and autumn) from both sediment and water samples. The MP concentrations were found to follow an exponential decay pattern from the shore toward the center of the lakes, with higher concentrations near the shoreline. The modeling framework is calibrated using regression analysis, which provides the best-fit parameters for the distance–concentration curves. This study employs sensitivity analysis to justify the decay coefficient, resulting in a selected value of k = 0.09. Model performance is assessed using statistical metrics such as the root mean square error (RMSE) and the coefficient of determination (R<sup>2</sup>), ensuring accuracy in predicting MP concentrations across different environmental compartments. This work represents a novel contribution to the field by applying numerical modeling techniques to an understudied geographical area. The findings highlight significant seasonal and spatial variations in MP concentrations, emphasizing the need for comprehensive monitoring. This study’s results contribute valuable insights into the environmental behavior of MPs in freshwater systems and support efforts to develop effective management strategies to mitigate pollution. |
| format | Article |
| id | doaj-art-d1d1e4f9d1d04df78bebb303ab1647cc |
| institution | DOAJ |
| issn | 2306-5338 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Hydrology |
| spelling | doaj-art-d1d1e4f9d1d04df78bebb303ab1647cc2025-08-20T03:13:58ZengMDPI AGHydrology2306-53382025-04-011249310.3390/hydrology12040093Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in KazakhstanNatalya S. Salikova0María-Elena Rodrigo-Clavero1Lyudmila A. Makeyeva2Zinep M. Shaimerdenova3Javier Rodrigo-Ilarri4Department of Ecology, Life Safety and Environmental Protection, Abay Myrzakhmetov Kokshetau University, Kokshetau 020000, KazakhstanInstituto de Ingeniería del Agua y del Medio Ambiente (IIAMA), Universitat Politècnica de València (UPV), 46022 Valencia, SpainDepartment of Ecology, Life Safety and Environmental Protection, Abay Myrzakhmetov Kokshetau University, Kokshetau 020000, KazakhstanDepartment of Ecology, Life Safety and Environmental Protection, Abay Myrzakhmetov Kokshetau University, Kokshetau 020000, KazakhstanInstituto de Ingeniería del Agua y del Medio Ambiente (IIAMA), Universitat Politècnica de València (UPV), 46022 Valencia, SpainThis research presents a detailed numerical modeling study focused on estimating the concentration of microplastics (MPs) in freshwater ecosystems. This research covers three lakes (Kopa, Zerendinskoye, and Borovoe) and the Yesil River, applying differential equations to model the spatial distribution and seasonal variations in MP concentrations. The methodology integrates field survey data collected during three different seasons (spring, summer, and autumn) from both sediment and water samples. The MP concentrations were found to follow an exponential decay pattern from the shore toward the center of the lakes, with higher concentrations near the shoreline. The modeling framework is calibrated using regression analysis, which provides the best-fit parameters for the distance–concentration curves. This study employs sensitivity analysis to justify the decay coefficient, resulting in a selected value of k = 0.09. Model performance is assessed using statistical metrics such as the root mean square error (RMSE) and the coefficient of determination (R<sup>2</sup>), ensuring accuracy in predicting MP concentrations across different environmental compartments. This work represents a novel contribution to the field by applying numerical modeling techniques to an understudied geographical area. The findings highlight significant seasonal and spatial variations in MP concentrations, emphasizing the need for comprehensive monitoring. This study’s results contribute valuable insights into the environmental behavior of MPs in freshwater systems and support efforts to develop effective management strategies to mitigate pollution.https://www.mdpi.com/2306-5338/12/4/93microplasticsnumerical modelingfreshwater ecosystemsKazakhstan |
| spellingShingle | Natalya S. Salikova María-Elena Rodrigo-Clavero Lyudmila A. Makeyeva Zinep M. Shaimerdenova Javier Rodrigo-Ilarri Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan Hydrology microplastics numerical modeling freshwater ecosystems Kazakhstan |
| title | Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan |
| title_full | Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan |
| title_fullStr | Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan |
| title_full_unstemmed | Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan |
| title_short | Numerical Modeling of the Concentration of Microplastics in Lakes and Rivers in Kazakhstan |
| title_sort | numerical modeling of the concentration of microplastics in lakes and rivers in kazakhstan |
| topic | microplastics numerical modeling freshwater ecosystems Kazakhstan |
| url | https://www.mdpi.com/2306-5338/12/4/93 |
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