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Study on Tailings Covering System Constructed by Geological Polymerization of Mine Waste, Part 1: Material Characterization and Cover Construction

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Abstract

Acid mine drainage (AMD) is a serious and persistent environmental pollution problem. At present, many studies have focused on the tailings pond's cover systems. This paper introduced the research results of using tin tailings from Laili mountain to make the covering layer of tailings pond. The first part included a detailed description of tailings characterization and acid production potential. On this basis, the hard layer (HL) was prepared and its feasibility as oxidation barrier was evaluated. It was found that when the proportion of tailings waste was 70%, the immobilization efficiency of heavy metals can reach more than 99.45%, and the pH of leaching solution was about 10.8. Moreover, the beneficial effect of solid waste addition on the HL was also verified. This suggests that HL as a post-mining restorative strategy has strong positive influence on pollution control.

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Acknowledgements

The authors thank the financial support from National Key Research and Development Program of China (Grant No. 2018YFC1802603) and National Natural Science Foundation of China (Grant No. 52060011). The authors also thank the editors and anonymous reviewers for their valuable work.

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Correspondence to Jianhong Huang.

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Chen, Y., Tian, S., Fu, J. et al. Study on Tailings Covering System Constructed by Geological Polymerization of Mine Waste, Part 1: Material Characterization and Cover Construction. Bull Environ Contam Toxicol 107, 1184–1190 (2021). https://doi.org/10.1007/s00128-021-03372-8

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  • DOI: https://doi.org/10.1007/s00128-021-03372-8

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