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Adsorption of 2,4-dichlorophenoxyacetic acid and glyphosate from water by Fe3O4-UiO-66-NH2 obtained in a simple green way

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Abstract

In this study, a green adsorbent (Fe3O4-UiO-66-NH2) with the ability of addressing the issues of separation and recovery of UiO-66-NH2 is obtained using a simple co-precipitation method under environmentally benign conditions. Various characterization techniques are utilized for evaluating the properties of the developed adsorbent. The capability of Fe3O4-UiO-66-NH2 towards 2,4-dichlorophenoxyacetic acid (2,4-D) and glyphosate (GP) from solution is explored. The results revealed that the magnetization process did not destroy the crystal structure of UiO-66-NH2, which ensured that Fe3O4-UiO-66-NH2 had good adsorption performance for 2,4-D and GP. The adsorption processes showed a wide pH application range, high salt tolerance, and regeneration performance as well as an excellent adsorption rate. Results from thermodynamic study showed that both processes were spontaneous and endothermic. The unit uptake ability of Fe3O4-UiO-66-NH2 for 2,4-D and GP reached up to 249 mg·g−1 and 183 mg·g−1 from Langmuir model at 303 K, respectively. When solid–liquid ratio was 2 g·L−1, Fe3O4-UiO-66-NH2 can reduce the content of 2,4-D or GP with the initial density of 100 mg·L−1 below the drinking water requirement limit. In addition, the reusability efficiency of Fe3O4-UiO-66-NH2 towards 2,4-D and GP was found to be 86% and 80% using 5 mmol·L−1 NaOH as eluent. Analysis of simulated water samples indicated that Fe3O4-UiO-66-NH2 could achieve the single or simultaneous removal of 2,4-D and GP from wastewater. Summarily, Fe3O4-UiO-66-NH2 as a green adsorbent can serve as an alternative for removing 2,4-D and GP from water body.

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The dataset generated and analyzed during this study could be obtained from the corresponding author on reasonable request.

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Funding

The research was supported by the National Key Research and Development Program of China (2018YFD0401402–04) and Zhongyuan Scholars Foundation (202101510005). The authors would like to grateful acknowledge Dr. Aaron Albert Aryee for improving the scientific language of this manuscript.

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Xiaoting Zhang: conceptualization, preparation, methodology, data curation, writing-original draft, writing-review and editing. Yang Liu: software, investigation. Lingbo Qu: writing-review and editing. Runping Han: methodology, data curation, Funding acquisition.

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Correspondence to Runping Han.

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Zhang, X., Liu, Y., Qu, L. et al. Adsorption of 2,4-dichlorophenoxyacetic acid and glyphosate from water by Fe3O4-UiO-66-NH2 obtained in a simple green way. Environ Sci Pollut Res 30, 60574–60589 (2023). https://doi.org/10.1007/s11356-023-26737-4

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  • DOI: https://doi.org/10.1007/s11356-023-26737-4

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