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Application of phosphogypsum in soilization: a review

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Abstract

Phosphogypsum is the most significant industrial solid waste in the world. Phosphogypsum has a complex composition and its traditional storage methods occupy large areas of land and also damage the environment. Currently, phosphogypsum is mainly used for the direct preparation of construction materials and chemical auxiliary materials, but the amount of phosphogypsum used in this process is small, so its market acceptance is very low. In recent years, phosphogypsum soil improvement and soilization have become research hotspots. Phosphogypsum can be used as a conditioner to improve the physical and chemical characteristics of soil, delay soil degradation, and passivate heavy metals to replace natural gypsum materials for resource utilization. Phosphogypsum can help soils capture additional carbon, thereby contributing to the global goals of carbon emission reduction and carbon neutrality. This paper presents a comprehensive and diverse study on the application of phosphogypsum, which is expected to provide new ideas for the global solution of the three phosphorus problems (phosphate mines, phosphorus chemical enterprises, phosphogypsum stockpiles in the waste stockpiles, and environmental pollution problems). This review summarizes the state-of-the-art research on phosphogypsum application in agriculture and soilization, as well as ideas and suggestions for its effective utilization in resource soil improvement. In addition, challenges in the field and potential future research directions are discussed.

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Acknowledgements

The project is funded by, National Natural Science Foundation of China [52060010], the Low-carbon Development Guidance Project of Yunnan Province in the year 2021 (No.135).

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Correspondence to B. Li.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Editorial responsibility: Dai-Viet N. Vo.

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Qi, J., Zhu, H., Zhou, P. et al. Application of phosphogypsum in soilization: a review. Int. J. Environ. Sci. Technol. 20, 10449–10464 (2023). https://doi.org/10.1007/s13762-023-04783-2

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  • DOI: https://doi.org/10.1007/s13762-023-04783-2

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