Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics
Plastic particles with a diameter of 5 mm or less are called microplastics. Microplastics are one of the primary sources of pollution in the environment. It has been proven that microplastics are also carriers of heavy metals, but there are few studies on their adsorption mechanism. In this study, t...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2021-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | http://dx.doi.org/10.1155/2021/4938749 |
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| author | Tingyu Fan Jie Zhao Yingxiang Chen Miao Wang Xingming Wang Shun Wang Xiaoyang Chen Akang Lu Shijiao Zha |
| author_facet | Tingyu Fan Jie Zhao Yingxiang Chen Miao Wang Xingming Wang Shun Wang Xiaoyang Chen Akang Lu Shijiao Zha |
| author_sort | Tingyu Fan |
| collection | DOAJ |
| description | Plastic particles with a diameter of 5 mm or less are called microplastics. Microplastics are one of the primary sources of pollution in the environment. It has been proven that microplastics are also carriers of heavy metals, but there are few studies on their adsorption mechanism. In this study, the adsorption of Pb, Cu, Cd, and Zn by polypropylene (PP) microplastics was analyzed and discussed. The morphology of PP was observed by scanning electron microscopy (SEM), the surface elemental composition of PP was determined by X-ray photoelectron spectroscopy (XPS), and the functional groups of PP were analyzed by Fourier transform infrared spectroscopy (FTIR). The results showed that the adsorption behavior of microplastics to different heavy metals could be balanced in 32 hours. Kinetics experiments showed that the adsorption process could be fitted well by a two-stage dynamic model, and the adsorption of Pb and Cu by PP is greater than that of Cd and Zn. The Freundlich model has the best fitting effect on Pb for the adsorption isothermal results. The Langmuir model showed that the process is favorable for adsorption. The adsorption of mixed heavy metals by microplastics showed that when the concentration of the mixed adsorption mass was low, the presence of a coexistence system promoted the adsorption of Zn and Cu by microplastics. With an increasing concentration, the adsorption of 4 heavy metals by microplastics is inhibited. |
| format | Article |
| id | doaj-art-d5b4d69ed3404dd1bac3bd2bc5591985 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-d5b4d69ed3404dd1bac3bd2bc55919852025-01-02T22:54:09ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382021-01-01202110.1155/2021/49387494938749Coexistence and Adsorption Properties of Heavy Metals by Polypropylene MicroplasticsTingyu Fan0Jie Zhao1Yingxiang Chen2Miao Wang3Xingming Wang4Shun Wang5Xiaoyang Chen6Akang Lu7Shijiao Zha8School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaPlastic particles with a diameter of 5 mm or less are called microplastics. Microplastics are one of the primary sources of pollution in the environment. It has been proven that microplastics are also carriers of heavy metals, but there are few studies on their adsorption mechanism. In this study, the adsorption of Pb, Cu, Cd, and Zn by polypropylene (PP) microplastics was analyzed and discussed. The morphology of PP was observed by scanning electron microscopy (SEM), the surface elemental composition of PP was determined by X-ray photoelectron spectroscopy (XPS), and the functional groups of PP were analyzed by Fourier transform infrared spectroscopy (FTIR). The results showed that the adsorption behavior of microplastics to different heavy metals could be balanced in 32 hours. Kinetics experiments showed that the adsorption process could be fitted well by a two-stage dynamic model, and the adsorption of Pb and Cu by PP is greater than that of Cd and Zn. The Freundlich model has the best fitting effect on Pb for the adsorption isothermal results. The Langmuir model showed that the process is favorable for adsorption. The adsorption of mixed heavy metals by microplastics showed that when the concentration of the mixed adsorption mass was low, the presence of a coexistence system promoted the adsorption of Zn and Cu by microplastics. With an increasing concentration, the adsorption of 4 heavy metals by microplastics is inhibited.http://dx.doi.org/10.1155/2021/4938749 |
| spellingShingle | Tingyu Fan Jie Zhao Yingxiang Chen Miao Wang Xingming Wang Shun Wang Xiaoyang Chen Akang Lu Shijiao Zha Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics Adsorption Science & Technology |
| title | Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics |
| title_full | Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics |
| title_fullStr | Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics |
| title_full_unstemmed | Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics |
| title_short | Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics |
| title_sort | coexistence and adsorption properties of heavy metals by polypropylene microplastics |
| url | http://dx.doi.org/10.1155/2021/4938749 |
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