| Issue |
E3S Web Conf.
Volume 81, 2019
The 1st International Symposium on Water Resource and Environmental Management (WREM 2018)
|
|
|---|---|---|
| Article Number | 01011 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/e3sconf/20198101011 | |
| Published online | 30 January 2019 | |
Effects of CeO2 nanoparticles on the algal composition and photosynthetic activity of phototrophic biofilm
Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing, People’s Republic of China, 210098
* Corresponding author: lzmiao@hhu.edu.cn
The influences of CeO2 nanoparticles (NPs) on phototrophic biofilm were explored in terms of the algal composition and photosynthetic activity. Biofilms were cultivated in an artificial flume and exposure experiments were conducted with two levels of CeO2 NPs (0.05 and 0.5 mg/L) for 10 days. Results showed that 0.05 mg/L CeO2 NPs treatment altered the algal composition of biofilms, while the total Chl a and the photosynthetic activity maintained at the similar level as the control test. 5 mg/L CeO2 NPs not only changed the algal composition of biofilms, but also significantly decreased the photosynthetic activity, suggesting that high concentration of CeO2 NPs might lead to serious consequences to the primary production and nutrient cycling in aquatic environments.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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