Adelaide Research & Scholarship
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https://hdl.handle.net/2440/64623
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| Type: | Journal article |
| Title: | Calculated acid-base account for H2O2 oxidation of carbonate-poor pyritic mine-rock |
| Author: | Weber, P. Thomas, J. Skinner, W. Smart, R. |
| Citation: | Canadian Mineralogist: crystallography, geochemistry, mineralogy, petrology, mineral deposits, 2005; 43(4):1193-1203 |
| Publisher: | Mineralogical Assoc Canada |
| Issue Date: | 2005 |
| ISSN: | 0008-4476 |
| Statement of Responsibility: | Paul A. Weber, Joan E. Thomas, William M. Skinner and Roger St.C. Smart |
| Abstract: | An assessment of the net acid–base account following H2O2 oxidation of mine rock was established by chemical calculations based on the molar quantity of neutralizing cations (Na, K, Mg, Ca) and acid-generating S released during the Net Acid Generation (NAG) test. These neutralizing cations are derived from both silicates and carbonates; in carbonate-poor samples (ANCcarb < 5 kg H2SO4/t), however, the acid-neutralization capacity of silicate may be more important in neutralizing acidity than carbonate ANC. Testing is not recommended for samples that have signifi cant concentrations of non-acid-forming S, nonneutralizing cations or non-acid-forming sulfi de minerals, such as galena. |
| Keywords: | acid rock-drainage acid-neutralization capacity net acid generation (NAG) test H2O2 acid mine-drainage pyrite oxidation acid–base accounting |
| Rights: | © 2005 Mineralogical Association of Canada |
| DOI: | 10.2113/gscanmin.43.4.1193 |
| Published version: | http://dx.doi.org/10.2113/gscanmin.43.4.1193 |
| Appears in Collections: | Aurora harvest 5 Chemical Engineering publications |
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