Abstract
Acid rock drainage (ARD) is a longstanding problem often associated with the resulting corrosion due to the acidity generated from sulfidic oxidation. To evaluate characteristics of ARD and corrosion, samples from the road side rock mass of Boeun and Mujoo were analysed using X-ray diffraction, acid/base accounting and Leaching tests. The results indicated that many samples had a pyritic origin and can be regarded as acid-generating rocks. The Leaching test showed that the average pH of the leachates of samples from both Boeun and Mujoo were moderately acidic, ranging from 3 to 4. Interestingly, as acidity increases from pH 4, the SO4−, Fe, Al and Mg concentrations increase abnormally. Samples from roadside slope of Mujoo showed high corrosive potential. Maximum sulfide oxidation rate of a sample taken from Mujoo was as high as 5,166 mg/kg/week.
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Ji, S.W., Cheong, Y.W., Yim, G.J. et al. ARD generation and corrosion potential of exposed roadside rockmass at Boeun and Mujoo, South Korea. Environ Geol 52, 1033–1043 (2007). https://doi.org/10.1007/s00254-006-0543-3
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DOI: https://doi.org/10.1007/s00254-006-0543-3