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VERSION CORRIGE CORRECTED VERSION The influence of kinetic test type on the geochemical response of low
 

Summary: VERSION CORRIGÉE CORRECTED VERSION
The influence of kinetic test type on the geochemical response of low
acid generating potential tailings
Mathieu Villeneuve, Bruno Bussière and Mostafa Benzaazoua
Industrial NSERC Polytechnique-UQAT Chair on Environment and Mine Waste Management, UQAT, 445
University blvd, Rouyn-Noranda, Québec, Canada, J9X 5E4.
Michel Aubertin
Industrial NSERC Polytechnique-UQAT Chair on Environment and Mine Waste Management, École
Polytechnique, C.P. 6079, Succ. Centre-Ville, Montréal, Québec, Canada, H3C 3A7
Marcos Monroy
ABSTRACT: This paper presents a comparison of the geochemical responses of five different tailings
submitted to five different kinetic tests. The five kinetic tests were done using column tests, humidity-cells,
shaking flasks, modified Soxhlet extractors and mini-alteration cells. The different tailings have all AP values
ranging from 23.9 to 178.8 kg CaCO3/t and NP values from 13.9 to 93.9 kg CaCO3/t. Evolution of the cal-
cium, magnesium, manganese and sulfate loads were compared between each kinetic test and each of the tail-
ings. It was found that, although the aggressiveness of the various kinetic tests was very different, the ratio of
the acid production rate to the neutralization rate was similar from test to test.
1 INTRODUCTION
The production of acid mine drainage (AMD) re-
mains one of the most important environmental

  

Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal

 

Collections: Engineering; Environmental Management and Restoration Technologies