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ARTICLE
Study on the Treatment of Acid Mine Drainage Containing Fe2+ and Mn2+ Using Modified Spontaneous Combustion Gangue
Xuying Guo1,2,*, Saiou Fu1, Junzhen Di3, Yanrong Dong3, Guoliang Jiang3
1 College of Mining, Liaoning Technical University, Fuxin, 123000, China
2 College of Science, Liaoning Technical University, Fuxin, 123000, China
3 College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
* Corresponding Author: Xuying Guo. Email:
Journal of Renewable Materials 2021, 9(3), 541-555. https://doi.org/10.32604/jrm.2021.012335
Received 26 June 2020; Accepted 26 August 2020; Issue published 14 January 2021
Abstract
The high concentrations of Fe
2+ and Mn
2+ in acid mine drainage make
it difficult and expensive to treat. It is urgent that we find a cheap and efficient
adsorption material to treat Fe
2+ and Mn
2+. As a solid waste in mining areas, coal
gangue occupies a large area and pollutes the surrounding environment during the
stacking process. Developing a method of resource utilization is thus a research
hotspot. In this study, we modified spontaneous combustion gangue using NaOH,
NaCl, and HCl by chemically modifying the minerals. We determined the optimal
conditions for treating Fe
2+ and Mn
2+ in acid mine drainage with spontaneous
combustion gangue and modified coal gangue using the single factor test method.
Based on results of the static test, two dynamic test columns, column No. 1 (spontaneous combustion gangue) and column No. 2 (NaOH modified spontaneous
combustion gangue), were constructed, and the repair effects of acid mine drainage were compared and analyzed using dynamic experiments. The results show
that overall, NaOH modified spontaneous combustion gangue is the most efficient
at removing the Fe
2+ and Mn
2+ in acid mine drainage. The optimal conditions for
NaOH modification are an NaOH concentration of 3 mol/L, a liquid to solid ratio
of 2 L/kg, and a modification time of 8 h. The overall efficiency of column No. 2
at removing Fe
2+ and Mn
2+ from acid mine drainage is better than that of column
No. 1. Among them, the average removal efficiency of Fe
2+ and Mn
2+ from acid
mine drainage in column No. 2 were 97.73% and 44.82%, respectively. The above
results show that NaOH modified spontaneous combustion gangue is a good
adsorbent, which has application potential in wastewater remediation, as it can
achieve the purpose of “treating dust with waste”.
Keywords
Cite This Article
APA Style
Guo, X., Fu, S., Di, J., Dong, Y., Jiang, G. (2021). Study on the treatment of acid mine drainage containing fe2+ and mn2+ using modified spontaneous combustion gangue. Journal of Renewable Materials, 9(3), 541-555. https://doi.org/10.32604/jrm.2021.012335
Vancouver Style
Guo X, Fu S, Di J, Dong Y, Jiang G. Study on the treatment of acid mine drainage containing fe2+ and mn2+ using modified spontaneous combustion gangue. J Renew Mater. 2021;9(3):541-555 https://doi.org/10.32604/jrm.2021.012335
IEEE Style
X. Guo, S. Fu, J. Di, Y. Dong, and G. Jiang "Study on the Treatment of Acid Mine Drainage Containing Fe2+ and Mn2+ Using Modified Spontaneous Combustion Gangue," J. Renew. Mater., vol. 9, no. 3, pp. 541-555. 2021. https://doi.org/10.32604/jrm.2021.012335
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