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The Joint Toxicity of Organic Three-dimensional Layered Double Hydroxide and Methyl Orange to Green Algae Chlorella Vulgaris

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Abstract

Organic modified layered double hydroxides (O-LDHs), known as attractive adsorbents for organic pollutants, may pose severe toxicity to the aquatic organisms during their large-scale application. However, little information is available on the toxicity of O-LDHs and the joint toxicity with the coexisted organic pollutants. Herein, we employed organic three-dimensional layered double hydroxide (O3D-LDH) and methyl orange (MO) as representative to investigate the toxicity mechanisms of single substance and its binary mixture on green algae Chlorella vulgaris. Results showed that O3D-LDH and MO presented concentration-dependent toxicity, the binary mixture showed additive effect after exposed to low O3D-LDH concentration (≤ 50 mg/L), but antagonism was observed for the other. It revealed that the agglomeration of O3D-LDH and microalgae influenced chlorophyll content, eventually inhibiting the growth of algae. Overall, this toxicity investigation was critical for understanding the environmental risk of organic LDHs to provide theorical guidance for their practical application in the water purification.

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Acknowledgements

This project is financially supported by National Nature Science Foundation of China (No. 52160020), Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province (No. 2019BCJ22002), the Natural Science Foundation of Jiangxi Province (No. 2020BAB203013). Graduate Students Innovation Special Fund of Jiangxi Province (No. YC2020-S117).

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Correspondence to Ping Zhang.

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Qiu, F., Xie, Y., Wang, Q. et al. The Joint Toxicity of Organic Three-dimensional Layered Double Hydroxide and Methyl Orange to Green Algae Chlorella Vulgaris. Bull Environ Contam Toxicol 108, 1098–1103 (2022). https://doi.org/10.1007/s00128-022-03509-3

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  • DOI: https://doi.org/10.1007/s00128-022-03509-3

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