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Migration and Fate of Acid Mine Drainage Pollutants in Calcareous Soil

by 1,*,†, 1,†, 2 and 1
1
Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu 030801, China
2
Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
*
Author to whom correspondence should be addressed.
Both authors contributed equally to this work.
Int. J. Environ. Res. Public Health 2018, 15(8), 1759; https://doi.org/10.3390/ijerph15081759
Received: 6 July 2018 / Revised: 2 August 2018 / Accepted: 9 August 2018 / Published: 16 August 2018
(This article belongs to the Section Environmental Science and Engineering)
As a major province of mineral resources in China, Shanxi currently has 6000 mines of various types, and acid mine drainage (AMD) is a major pollutant from the mining industry. Calcareous soil is dominant in western North China (including the Shanxi Province), therefore, clarifying the migration behavior of the main AMD pollutants (H+, S, Fe, heavy metals) in calcareous soil is essential for remediating AMD-contaminated soil in North China. In this study, the migration behavior of the main pollutants from AMD in calcareous soil was investigated using soil columns containing 20 cm of surficial soil to which different volumes of simulated AMD were added in 20 applications. Filtrate that was discharged from the soil columns and the soil samples from the columns were analyzed. Almost all of the Fe ions (>99%) from the AMD were intercepted in the 0–20 cm depth of the soil. Although >80% of SO42− was retained, the retention efficiency of the soil for SO42− was lower than it was for Fe. Cu, as a representative of heavy metals that are contained in AMD, was nearly totally retained by the calcareous soil. However, Cu had a tendency to migrate downward with the gradual acidification of the upper soil. In addition, CaCO3 was transformed into CaSO4 in AMD-contaminated soil. The outcomes of this study are valuable for understanding the pollution of calcareous soil by AMD and can provide key parameters for remediating AMD-contaminated soil. View Full-Text
Keywords: acid mine drainage; Fe; S; calcareous soil; pollutant migration behavior acid mine drainage; Fe; S; calcareous soil; pollutant migration behavior
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MDPI and ACS Style

Liu, F.; Qiao, X.; Zhou, L.; Zhang, J. Migration and Fate of Acid Mine Drainage Pollutants in Calcareous Soil. Int. J. Environ. Res. Public Health 2018, 15, 1759. https://doi.org/10.3390/ijerph15081759

AMA Style

Liu F, Qiao X, Zhou L, Zhang J. Migration and Fate of Acid Mine Drainage Pollutants in Calcareous Soil. International Journal of Environmental Research and Public Health. 2018; 15(8):1759. https://doi.org/10.3390/ijerph15081759

Chicago/Turabian Style

Liu, Fenwu; Qiao, Xingxing; Zhou, Lixiang; Zhang, Jian. 2018. "Migration and Fate of Acid Mine Drainage Pollutants in Calcareous Soil" Int. J. Environ. Res. Public Health 15, no. 8: 1759. https://doi.org/10.3390/ijerph15081759

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