Evaluating Remedial Alternatives for an Acid Mine Drainage Stream:  Application of a Reactive Transport Model

2002 ◽  
Vol 36 (5) ◽  
pp. 1093-1101 ◽  
Author(s):  
Robert L. Runkel ◽  
Briant A. Kimball
Keyword(s):  
Acid Mine Drainage ◽  
Reactive Transport ◽  
Mine Drainage ◽  
Transport Model ◽  
Reactive Transport Model ◽  
Acid Mine

Reactive Transport Modeling of Column Experiments for the Remediation of Acid Mine Drainage

2004 ◽  
Vol 38 (11) ◽  
pp. 3131-3138 ◽  
Author(s):  
Richard T. Amos ◽  
K. Ulrich Mayer ◽  
David W. Blowes ◽  
Carol J. Ptacek
Keyword(s):  
Acid Mine Drainage ◽  
Reactive Transport ◽  
Mine Drainage ◽  
Transport Modeling ◽  
Column Experiments ◽  
Reactive Transport Modeling ◽  
Acid Mine

scholarly journals Prediction of acid mine drainage formation and zinc migration in the tailings dam of a closed mine, and possible countermeasures

2019 ◽  
Vol 268 ◽  
pp. 06003 ◽  
Author(s):  
Carlito Tabelin ◽  
Asuka Sasaki ◽  
Toshifumi Igarashi ◽  
Shingo Tomiyama ◽  
Mylah Villacorte-Tabelin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Acid Mine Drainage ◽  
Reactive Transport ◽  
Mine Drainage ◽  
Economic Value ◽  
Abandoned Mines ◽  
Tailings Dam ◽  
Visual Modflow ◽  
Acid Mine

Acid mine drainage (AMD), the very acidic and highly contaminated leachate generated in closed/abandoned mines, is commonly managed by neutralization to raise the pH and precipitate most of the heavy metals. Although effective, this approach does not generate any product of economic value, so it is very costly and unsustainable in the long-term. Unfortunately, there are currently no effective alternatives to neutralization, and one way to improve the sustainability of this process is to reduce the volume of AMD generated and/or the concentration of heavy metals. The tailings dam investigated in this study is located in northern Hokkaido, Japan. Detailed characterization of borehole core samples showed that even after almost 40 years of exposure to the environment, the tailings still contain pyrite (FeS2) and substantial amounts of copper (Cu) and zinc (Zn). Reactive-transport modeling using Visual MODFLOW predicted that AMD quality would likely continue to deteriorate with time and that treatment should be continued for at least 1,000 years. The model also predicted that a barrier with low permeability installed downstream of the tailings dam or ground sealing techniques for recharge reduction could lower the volume of AMD and concentration of Zn from the site.

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