Abstract
Blast furnace dust (BFD) is the solid powder and particulate matter produced by dust removal process in ironmaking industry. The element composition of BFD is complex, and a direct return to sintering will lead to heavy metal enrichment and blast furnace lining corrosion. In recent years, the application of BFD in wastewater treatment has attracted widespread attention. Based on the mechanisms of action of BFD in wastewater, this paper discusses in detail the application of BFD in iron-carbon micro-electrolysis, biological enhancement, adsorption, flocculation, and Fenton/Fenton-like reactions. Iron oxides and carbon in BFD are key substances. Thus, BFD has great potential as a raw material in wastewater treatment, and the waste utilization of BFD can be realized. However, the difference in elements and composition of BFD limits its large-scale application. We can classify BFD according to different proportions of elements. In the future, it is necessary to focus on the service life of BFD in water and whether it shall bring secondary pollution to water.
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Funding
This work was financially supported by the Natural Science Foundation of Hebei Province (No.E2023110001, No.C2023110006), and the combination of industry, university, and research agricultural project (No.JBGG202207), and we also thank to the support of Cangzhou Institute of Tiangong University (No.TGCYY-F-0103).
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Conceptualization, methodology, investigation, formal analysis, writing-original draft, and validation were performed by Wen Zhang, Hui Jia, and Jie Wang. Visualization and investigation were performed by Yue Wang. Formal analysis, supervision, and visualization were performed by Fei Gao. Conceptualization, methodology, formal analysis, and validation were performed by Guang Yang. Supervision, formal analysis, and funding acquisition were performed by Jie Wang. All authors read and approved the final manuscript.
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Highlights
1. Comprehensive reaction mechanisms of BFD in wastewater treatment are analyzed.
2. The abundant iron oxides and carbon in BFD play key roles in wastewater treatment.
3. BFD with different elemental compositions can be used for different purposes.
4. Future research should focus on the long-term operational stability and reusability of BFD.
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Zhang, W., Jia, H., Wang, Y. et al. Review in application of blast furnace dust in wastewater treatment: material preparation, integrated process, and mechanism. Environ Sci Pollut Res 31, 22339–22361 (2024). https://doi.org/10.1007/s11356-024-32631-4
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DOI: https://doi.org/10.1007/s11356-024-32631-4