Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties
Abstract The shape-dependent effects of microplastics have been studied in the context of ingestion but have not been considered in other environmental processes. Therefore, we investigated how the shape of polyethylene microplastics (spheres, fragments, and films) affects interactions with plants,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-49175-1 |
| _version_ | 1797388366814117888 |
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| author | Ula Rozman Barbara Klun Aleksandra Kuljanin Tina Skalar Gabriela Kalčíková |
| author_facet | Ula Rozman Barbara Klun Aleksandra Kuljanin Tina Skalar Gabriela Kalčíková |
| author_sort | Ula Rozman |
| collection | DOAJ |
| description | Abstract The shape-dependent effects of microplastics have been studied in the context of ingestion but have not been considered in other environmental processes. Therefore, we investigated how the shape of polyethylene microplastics (spheres, fragments, and films) affects interactions with plants, aging, and their adsorption properties. The shape had no effect on the growth rate and chlorophyll content of duckweed Lemna minor, but the fragments strongly adhered to the plant biomass and reduced the root length. The adsorption process of the model organic compound (methylene blue dye) was described by the same kinetic model for all shapes—the experimental data best fit the pseudo-second order model. However, twice as much methylene blue was adsorbed on films as on fragments and spheres. During environmental aging, most biofilm developed on films. The biofilm on spheres contained significantly less photosynthetic microorganisms, but twice as much extracellular polymeric substances (EPS) as on fragments and films. This suggests that the attachment of microorganisms to spherical particles is limited and therefore more intensive production of EPS is required for stable biofilm formation. From the results of this study, it is evident that the shape of microplastics significantly affects not only ecotoxicity but also other environmentally relevant processes. |
| first_indexed | 2024-03-08T22:39:45Z |
| format | Article |
| id | doaj.art-c86afcf7400e45c2875d1de36d5f7bfa |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-08T22:39:45Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-c86afcf7400e45c2875d1de36d5f7bfa2023-12-17T12:15:41ZengNature PortfolioScientific Reports2045-23222023-12-0113111010.1038/s41598-023-49175-1Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption propertiesUla Rozman0Barbara Klun1Aleksandra Kuljanin2Tina Skalar3Gabriela Kalčíková4Faculty of Chemistry and Chemical Technology, University of LjubljanaFaculty of Chemistry and Chemical Technology, University of LjubljanaFaculty of Chemistry and Chemical Technology, University of LjubljanaFaculty of Chemistry and Chemical Technology, University of LjubljanaFaculty of Chemistry and Chemical Technology, University of LjubljanaAbstract The shape-dependent effects of microplastics have been studied in the context of ingestion but have not been considered in other environmental processes. Therefore, we investigated how the shape of polyethylene microplastics (spheres, fragments, and films) affects interactions with plants, aging, and their adsorption properties. The shape had no effect on the growth rate and chlorophyll content of duckweed Lemna minor, but the fragments strongly adhered to the plant biomass and reduced the root length. The adsorption process of the model organic compound (methylene blue dye) was described by the same kinetic model for all shapes—the experimental data best fit the pseudo-second order model. However, twice as much methylene blue was adsorbed on films as on fragments and spheres. During environmental aging, most biofilm developed on films. The biofilm on spheres contained significantly less photosynthetic microorganisms, but twice as much extracellular polymeric substances (EPS) as on fragments and films. This suggests that the attachment of microorganisms to spherical particles is limited and therefore more intensive production of EPS is required for stable biofilm formation. From the results of this study, it is evident that the shape of microplastics significantly affects not only ecotoxicity but also other environmentally relevant processes.https://doi.org/10.1038/s41598-023-49175-1 |
| spellingShingle | Ula Rozman Barbara Klun Aleksandra Kuljanin Tina Skalar Gabriela Kalčíková Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties Scientific Reports |
| title | Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties |
| title_full | Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties |
| title_fullStr | Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties |
| title_full_unstemmed | Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties |
| title_short | Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties |
| title_sort | insights into the shape dependent effects of polyethylene microplastics on interactions with organisms environmental aging and adsorption properties |
| url | https://doi.org/10.1038/s41598-023-49175-1 |
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