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Methods to treat industrial salted waste: a review

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Abstract

The rising production of industrial salted waste induces issues of disposal and pollution, calling for advanced methods to treat, purify and recycle the raw salt in the context of the circular economy. The main components of salted waste are organic and mineral fractions. Here we review the methods used to treat salted waste with focus on sources of salted waste, properties and removal of organic matter, and separation of minerals. Organic matter can be removed by pyrolysis carbonization, high-temperature melting, elution, and oxidation. Salt can be separated by evaporative crystallization, salt washing, and nanofiltration.

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Acknowledgements

This work was supported by the National Key Research and Development Program of China (No. 2020YFC1808103); the National Nature Science Foundation of China (No. 20907029, No. 21577085); Science & Technology Commission of Shanghai Municipality (No. 22002400500); the Natural Science Fund Projects of Shanghai Municipal Science and Technology Commission (No. 14ZR1415600); the Innovative Project of Shanghai Municipal Education Commission (No. 10YZ07); and the Key Subject of Shanghai Municipality (No. S30109). The authors gratefully acknowledge the financial support from Shaoxing Shangyu Zhonglian Environmental Protection Co., Ltd.

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Correspondence to Xiuxiu Ruan.

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Ruan, X., Song, M., Fang, Z. et al. Methods to treat industrial salted waste: a review. Environ Chem Lett (2024). https://doi.org/10.1007/s10311-024-01721-7

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  • DOI: https://doi.org/10.1007/s10311-024-01721-7

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