Optimising the rehabilitation of polluted mine tailings and water by an organic medium passive acid mine drainage treatment in South Africa

2010 ◽  
Vol 41 (3/4) ◽  
pp. 336 ◽  
Author(s):  
O. Pollmann ◽  
L. Van Rensburg ◽  
F. Wilson
Keyword(s):  
South Africa ◽  
Acid Mine Drainage ◽  
Mine Tailings ◽  
Mine Drainage ◽  
Organic Medium ◽  
Acid Mine ◽  
Acid Mine Drainage Treatment

scholarly journals Natural oxidation of coal tailings from Middelburg area (South Africa), and impact on acid-generation potential

2020 ◽  
Vol 120 (11) ◽  
Author(s):  
N. van Wyk ◽  
E. Fosso-Kankeu ◽  
D. Moyakhe ◽  
F.B. Waanders ◽  
M. Le Roux ◽  
...  
Keyword(s):  
South Africa ◽  
Acid Mine Drainage ◽  
Coal Mine ◽  
Mine Tailings ◽  
Mine Drainage ◽  
Acid Base ◽  
Acid Base Accounting ◽  
Acid Mine ◽  
Acid Generation ◽  
Coal Tailings

SYNOPSIS The aim of this study was to determine the acid-generating potential of coal mine tailings located in the Middelburg area, South Africa, using conventional assessment techniques. Four coal-tailing samples were collected from different layers of a coal-tailing pile. The acid-base accounting (ABA), acid-buffering characteristic curve (ABCC), and net acid generation (NAG) methods were used in conjunction with a mineralogical investigation to assess the potential of acid mine drainage (AMD) formation from the tailings. The results showed that the top layer of the pile, which was exposed to the atmosphere, was most likely to form AMD, exhibiting the lowest paste pH (2.5) and ABA of zero kg H2SO4 per ton. The ABA results were compared to ABCC results and mineralogical calculations to confirm the findings. The results from the ABCC test and calculations based on mineralogy indicated that the ABA method overestimates the effective or readily available acid neutralization capacity (ANC) and the true MPA of each sample; only three of the four samples could therefore be classified as acid-forming, but with low acid-generating capacity. Although the findings show that the top layer of the coal tailings in the Middelburg area is most likely to form AMD, it is important for future studies to further investigate the kinetics of acid formation. Keywords: acid mine drainage, acid-base accounting, mineralogy, net acid generation, coal mine tailings.

scholarly journals Acid mine drainage treatment by integrated submerged membrane distillation–sorption system

Chemosphere ◽  
2019 ◽  
Vol 218 ◽  
pp. 955-965 ◽  
Author(s):  
Seongchul Ryu ◽  
Gayathri Naidu ◽  
Md Abu Hasan Johir ◽  
Youngkwon Choi ◽  
Sanghyun Jeong ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Membrane Distillation ◽  
Sorption System ◽  
Acid Mine ◽  
Acid Mine Drainage Treatment

scholarly journals Governance and socio-political issues in management of acid mine drainage in South Africa

Water Policy ◽  
2017 ◽  
Vol 20 (1) ◽  
pp. 77-89
Author(s):  
Charles Mpofu ◽  
Thabiso John Morodi ◽  
Johan Petrus Hattingh
Keyword(s):  
South Africa ◽  
Decision Making ◽  
Acid Mine Drainage ◽  
Environmental Governance ◽  
Mine Drainage ◽  
Mineral Resources ◽  
Political Issues ◽  
Acid Mine ◽  
Black Economic Empowerment ◽  
Decision Making Processes

Abstract The water resources in South Africa are threatened by current and past mining practices such as abandoned and closed mines. While mining is considered valuable for its contribution to this country's gross domestic product, its polluting effects on water and land resources have been criticised as unsustainable. Acid mine drainage (AMD) is one specific public health and ecological issue that has stirred debates in political and social circles in this country. This paper examines the scalar politics and other related dimensions of water and AMD governance, thereby revealing evidence of deep-rooted challenges regarding the governance of water and mineral resources. The specific focus is on the socio-political context of labour laws and Black Economic Empowerment and the decision-making processes adopted by government. Thus, this paper has implications for the improvement of environmental governance and decision-making strategies and the adoption of a national strategy for adequately addressing AMD and related policy issues.

A review of recent strategies for acid mine drainage prevention and mine tailings recycling

Chemosphere ◽  
2019 ◽  
Vol 219 ◽  
pp. 588-606 ◽  
Author(s):  
Ilhwan Park ◽  
Carlito Baltazar Tabelin ◽  
Sanghee Jeon ◽  
Xinlong Li ◽  
Kensuke Seno ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Tailings ◽  
Mine Drainage ◽  
Acid Mine
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