Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension
As a new type of environmental pollutant, microplastics (MPs) can adsorb residual organochlorine pesticides (OCPs) in the soil and pose a severe threat to the soil ecosystems. To understand the interaction between soil MPs and OCPs, the sorption of two kinds of OCPs, including hexachlorocyclohexanes...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-10-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S014765132100703X |
| _version_ | 1819128898714075136 |
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| author | Chengli Zhang Yuchen Lei Jing Qian Yixin Qiao Jingchao Liu Shuifeng Li Lingyu Dai Kexin Sun Huimin Guo Guodong Sui Wenwen Jing |
| author_facet | Chengli Zhang Yuchen Lei Jing Qian Yixin Qiao Jingchao Liu Shuifeng Li Lingyu Dai Kexin Sun Huimin Guo Guodong Sui Wenwen Jing |
| author_sort | Chengli Zhang |
| collection | DOAJ |
| description | As a new type of environmental pollutant, microplastics (MPs) can adsorb residual organochlorine pesticides (OCPs) in the soil and pose a severe threat to the soil ecosystems. To understand the interaction between soil MPs and OCPs, the sorption of two kinds of OCPs, including hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs), on polyethylene (PE) microplastics in soil suspension was studied through sorption kinetics and isotherm models. The effects of solution/soil ratio and MPs diameter on sorption were examined. The kinetic experiment results show that the sorption equilibrium was 12 h， and the sorption process of OCPs on MPs can be well described by a pseudo-second-order model. The Freundlich model (R2 = 0.942–0.997) provides a better fit to the sorption isotherm data than the Langmuir model (R2 = 0.062–0.634), indicating that the sorption process takes place on the nonuniform surface of MPs. The MPs had a good sorption effect on OCPs when the solution/soil ratio was from 75:1 to 100:1. As the diameter of MPs increases, the sorption capacity decreases. These results provide support for further research on microplastic pollution in soil. |
| first_indexed | 2024-12-22T08:35:08Z |
| format | Article |
| id | doaj.art-2674169c5a894eb2bb71d9578e5df2b8 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-22T08:35:08Z |
| publishDate | 2021-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-2674169c5a894eb2bb71d9578e5df2b82022-12-21T18:32:23ZengElsevierEcotoxicology and Environmental Safety0147-65132021-10-01223112591Sorption of organochlorine pesticides on polyethylene microplastics in soil suspensionChengli Zhang0Yuchen Lei1Jing Qian2Yixin Qiao3Jingchao Liu4Shuifeng Li5Lingyu Dai6Kexin Sun7Huimin Guo8Guodong Sui9Wenwen Jing10National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng 475004, China; Henan Engineering Research Center for Control & Remediation of Soil Heavy Metal Pollution, Henan University, Kaifeng 475004, ChinaNational Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaCollege of the Environment & Ecology, Xiamen University, Xiamen 361102, ChinaCollege of Innovation and Experiment, Northwest A & F University, Yangling 712100, ChinaNational Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaNational Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaNational Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaNational Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaNational Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai, China; Corresponding authors.Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; Corresponding authors.As a new type of environmental pollutant, microplastics (MPs) can adsorb residual organochlorine pesticides (OCPs) in the soil and pose a severe threat to the soil ecosystems. To understand the interaction between soil MPs and OCPs, the sorption of two kinds of OCPs, including hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs), on polyethylene (PE) microplastics in soil suspension was studied through sorption kinetics and isotherm models. The effects of solution/soil ratio and MPs diameter on sorption were examined. The kinetic experiment results show that the sorption equilibrium was 12 h， and the sorption process of OCPs on MPs can be well described by a pseudo-second-order model. The Freundlich model (R2 = 0.942–0.997) provides a better fit to the sorption isotherm data than the Langmuir model (R2 = 0.062–0.634), indicating that the sorption process takes place on the nonuniform surface of MPs. The MPs had a good sorption effect on OCPs when the solution/soil ratio was from 75:1 to 100:1. As the diameter of MPs increases, the sorption capacity decreases. These results provide support for further research on microplastic pollution in soil.http://www.sciencedirect.com/science/article/pii/S014765132100703XMicroplasticsHexachlorocyclohexanesDichlorodiphenyltrichloroeth- anesOrganochlorine pesticidesSorption mechanism |
| spellingShingle | Chengli Zhang Yuchen Lei Jing Qian Yixin Qiao Jingchao Liu Shuifeng Li Lingyu Dai Kexin Sun Huimin Guo Guodong Sui Wenwen Jing Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension Ecotoxicology and Environmental Safety Microplastics Hexachlorocyclohexanes Dichlorodiphenyltrichloroeth- anes Organochlorine pesticides Sorption mechanism |
| title | Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension |
| title_full | Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension |
| title_fullStr | Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension |
| title_full_unstemmed | Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension |
| title_short | Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension |
| title_sort | sorption of organochlorine pesticides on polyethylene microplastics in soil suspension |
| topic | Microplastics Hexachlorocyclohexanes Dichlorodiphenyltrichloroeth- anes Organochlorine pesticides Sorption mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S014765132100703X |
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