The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.
Nanoplastics Disturb Nitrogen Removal in Constructed Wetlands: Responses of Microbes and Macrophytes
Abstract
Abstract Nanosized plastics (nanoplastics) releasing into the wastewater may pose a potential threat to biological nitrogen removal. Constructed wetland (CW), a wastewater treatment or shore buffer system, is an important sink of nanoplastics, while it is unclear how nitrogen removal in CWs occurs in response to nanoplastics. Here, we investigated the effects of polystyrene (PS) nanoplastics (0, 10, and 1000 μg/L) on nitrogen removal for 180 days in CWs. The results revealed that total nitrogen removal efficiency decreased by 29.5–40.6%. We found that PS penetrated the cell membrane and destroyed both membrane integrity and reactive oxygen species balance. Furthermore, PS inhibited microbial activity in vivo, including enzyme (ammonia monooxygenase, nitrate reductase, and nitrite reductase) activities and electron transport system activity (ETSA). These adverse effects, accompanied by a decline in the relative abundance of nitrifiers (e.g., Nitrosomonas and Nitrospira) and denitrifiers (e.g., Thauera and Zoogloea), directly accounted for the strong deterioration observed in nitrogen removal. The decline in leaf and root activities decreased nitrogen uptake by plants, which is an important factor of deterioration in nitrogen removal. Overall, our results imply that the presence of nanoplastics in the aquatic environment is a hidden danger to the global nitrogen cycle and should receive more attention.
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Cites
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Microplastic ingestion by zooplankton
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Removal of nutrients in various types of constructed wetlands
Vymazal, J. (2007) · Science of The Total Environment · doi:10.1016/j.scitotenv.2006.09.014 · Cited by 2,762
Self-citationEmergence of Nanoplastic in the Environment and Possible Impact on Human Health
Lehner, R., Weder, C., Petri-Fink, A., & Rothen-Rutishauser, B. (2019) · Environmental Science & Technology · doi:10.1021/acs.est.8b05512 · Cited by 1,242
(Nano)plastics in the environment - Sources, fates and effects
da Costa, J. P., Santos, P. S. M., Duarte, A. C., & Rocha-Santos, T. (2016) · Science of The Total Environment · doi:10.1016/j.scitotenv.2016.05.041 · Cited by 1,139
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Characterisation of nanoplastics during the degradation of polystyrene
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Turning microplastics into nanoplastics through digestive fragmentation by Antarctic krill
Dawson, A. L., Kawaguchi, S., King, C. K., Townsend, K. A., King, R., Huston, W. M., & Bengtson Nash, S. M. (2018) · Nature Communications · doi:10.1038/s41467-018-03465-9 · Cited by 1,023
Ecotoxicity and genotoxicity of polystyrene microplastics on higher plant Vicia faba
Jiang, X., Chen, H., Liao, Y., Ye, Z., Li, M., & Klobučar, G. (2019) · Environmental Pollution · doi:10.1016/j.envpol.2019.04.055 · Cited by 993
Cited by
Microplastic residues in wetland ecosystems: Do they truly threaten the plant-microbe-soil system?
Yu, H., Qi, W., Cao, X., Hu, J., Li, Y., Peng, J., Hu, C., & Qu, J. (2021) · Environment International · doi:10.1016/j.envint.2021.106708 · Cited by 264
Metadata
- Authors
- Yang, X., He, Q., Guo, F., Sun, X., Zhang, J., Chen, M., Vymazal, J., & Chen, Y.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2020-10-22
- Volume
- 54
- Issue
- 21
- Pages
- 14007-14016
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W3094101751
- Cited by
- 316
- References
- 45
- FWCI
- 6.55
- Type
- journal article
- Language
- en
- Open access
- closed
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