scholarly journals The Acid-Base Accounting (ABA) of Overburden Rock to Predict Acid Mine Water in Kasai Coal Mining, Indonesia

2019 ◽  
Vol 35 (3) ◽  
pp. 1103-1111
Author(s):  
Ahmad Helman Hamdani ◽  
Johanes Hutabarat ◽  
Agus Didit Haryanto
Keyword(s):  
Mine Water ◽  
Overburden Rock ◽  
Acid Neutralization ◽  
Acid Mine Water ◽  
Acid Base ◽  
Neutralization Capacity ◽  
Acid Base Accounting ◽  
Acid Mine ◽  
Acid Generation ◽  
Potential Acid

The Acid-Base Accounting (ABA) and TCLP methods from overburden samples collected from the coal mine in Kasai were undertaken to predict pre-mining acid mine water quality. Maximum potential acidity (MPA), acid neutralization capacity (ANC), net acid generation (NAG), net acid producing potential (NAPP) and ANC/MPA ratios were determined on the Acid-Base Accounting (ABA) protocol. Most of the samples from KS-10, KS-11 and KS-12 show the pH of NAG of overburden ranges from 5.53–7.86 negatively net acid neutralization potential (NAPP). The ANC/MPA ratio varied from 1.09–26.60 and is classified as non-acid-forming except at an interval depth of 7.00–9.00 m in KS-12, where it is classified as uncertainty. The potentially acid mine water detected in KS-39 at an interval depth of 16.00–36.00 m was classified as potential acid forming (PAF), indicated by a positive NAPP, a low ratio of ANC/MPA (below 1.0) and high dissolved metal iron.

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.

Physical-Chemical Treatment of Acid Mine Water from a Superfund Site

1989 ◽  
Vol 19 (3) ◽  
pp. 237-263 ◽  
Author(s):  
Marcia H. Bates ◽  
John N. Veenstra ◽  
John Barber ◽  
Raju Bernard ◽  
Julie Karleskint ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Mine Water ◽  
Superfund Site ◽  
Acid Mine Water ◽  
Acid Mine ◽  
Physical Chemical

Molecular characterization of uranium(VI) sorption complexes on iron(III)-rich acid mine water colloids

2006 ◽  
Vol 70 (22) ◽  
pp. 5469-5487 ◽  
Author(s):  
Kai-Uwe Ulrich ◽  
André Rossberg ◽  
Harald Foerstendorf ◽  
Harald Zänker ◽  
Andreas C. Scheinost
Keyword(s):  
Molecular Characterization ◽  
Mine Water ◽  
Acid Mine Water ◽  
Acid Mine

Arsenic-Rich Acid Mine Water with Extreme Arsenic Concentration: Mineralogy, Geochemistry, Microbiology, and Environmental Implications

2014 ◽  
Vol 48 (23) ◽  
pp. 13685-13693 ◽  
Author(s):  
Juraj Majzlan ◽  
Jakub Plášil ◽  
Radek Škoda ◽  
Johannes Gescher ◽  
Felix Kögler ◽  
...  
Keyword(s):  
Mine Water ◽  
Arsenic Concentration ◽  
Acid Mine Water ◽  
Environmental Implications ◽  
Acid Mine
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