Kinetic tests comparison and interpretation for prediction of the Joutel tailings acid generation potential

Benzaazoua, Mostafa; Bussière, Bruno; Dagenais, Anne-Marie; Archambault, M.

doi:10.1007/s00254-004-1113-1

Cited by 115 publications

(44 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Weathering of the rock in the cold cells also resulted in lower concentrations of SO 4 and Ca due to decreased rates of sulfide oxidation at the lower temperature ( Figure 4). Acid-generation/neutralization relations can be examined through a comparison of sulfide oxidation products (primarily SO 4 ) and acid neutralization products (such as Ca from carbonates) [47]. To visualize the change in the relations, the release of SO 4 and Ca and associated load accumulations were compared for time intervals of weeks 0-25, 25-50, 50-100, 100-125, 125-150, 150-200, and 200-250, when variation in pH suggest changes in acid generation or acid neutralization ( Figure 5).…”

Section: Sulfide Oxidation and Acid Neutralization By Carbonate Mineralsmentioning

confidence: 99%

Diavik Waste Rock Project: Evolution of Mineral Weathering, Element Release, and Acid Generation and Neutralization during a Five-Year Humidity Cell Experiment

et al. 2014

View full text Add to dashboard Cite

Abstract:A five-year, humidity-cell experiment was used to study the weathering evolution of a low-sulfide, granitic waste rock at 5 and 22 °C. Only the rock with the highest sulfide content (0.16 wt %) released sufficient acid to overcome a limited carbonate acid-neutralization capacity and produce a substantial decline in pH. Leached SO 4 and Ca quickly increased then decreased during the first two years of weathering. Sulfide oxidation continued to release acid and SO 4 after carbonate depletion, resulting in an increase in acid-soluble elements, including Cu and Zn. With the dissolution of Al-bearing minerals, the pH stabilized above 4, and sulfide oxidation continued to decline until the end of the experiment. The variation in activation energy of sulfide oxidation correlates with changes in sulfide availability, where the lowest activation energies occurred during the largest releases of SO 4 . A decrease in sulfide availability was attributed to consumption of sulfide and weathered rims on sulfide grains that reduced the oxidation rate. Varying element release rates due to changing carbonate and sulfide availability provide identifiable OPEN ACCESSMinerals 2014, 4 258 geochemical conditions that can be viewed as neutralization sequences and may be extrapolated to the field site for examining the evolution of mineral weathering of the waste rock.

show abstract

Section: Sulfide Oxidation and Acid Neutralization By Carbonate Mineralsmentioning

confidence: 99%

Diavik Waste Rock Project: Evolution of Mineral Weathering, Element Release, and Acid Generation and Neutralization during a Five-Year Humidity Cell Experiment

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Afin de guider l'industrie minière dans le choix des méthodes de stockage des rejets miniers et de restauration de leurs sites en fonction de leur nature relative à la production du DMA, plusieurs outils de prédiction sont disponibles. Les plus utilisés sont les tests statiques et les essais cinétiques (Plante 2004;Benzaazoua et al 2001Benzaazoua et al , 2004Villeneuve. 2004;Villeneuve et al 2009;MEND 1991MEND , 2009Plante et al 2012).…”

Section: Prédiction Du Drainage Minier Acideunclassified

Revue de littérature détaillée sur les tests statiques et les essais cinétiques comme outils de prédiction du drainage minier acide

Bouzahzah¹,

Benzaazoua²,

Bussière³

et al. 2014

Environnement, Ingénierie &Amp; Développement

View full text Add to dashboard Cite

“…Static tests used to evaluate the acid generation potential of rocks and mine wastes are critical to determine the environmental impact of a mine site and to choose a waste management method to minimize that impact (Ritcey 1989;Morin and Hutt 1997;Bussiere et al 2004;Benzaazoua et al 2004;Yeheyis et al 2009). Details of these tests are documented (Sobek et al 1978;Smith et al 1992;Morin and Hutt 1997;White et al 1999;Mitchell 2000;Jambor 2003;Mills 2007;Lottermoser 2010).…”

Section: Introductionmentioning

confidence: 99%

Prediction of acid mine drainage generation potential of various lithologies using static tests: Etili coal mine (NW Turkey) as a case study

Yücel

Baba

2016

Environ Monit Assess

View full text Add to dashboard Cite

The Etili neighborhood in Can County (northwestern Turkey) has large reserves of coal and has been the site of many small-to medium-scale mining operations since the 1980s. Some of these have ceased working while others continue to operate. Once activities cease, the mining facilities and fields are usually abandoned without rehabilitation. The most significant environmental problem is acid mine drainage (AMD). This study was carried out to determine the acid generation potential of various lithological units in the Etili coal mine using static test methods. Seventeen samples were selected from areas with high acidic water concentrations: from different alteration zones belonging to volcanic rocks, from sedimentary rocks, and from coals and mine wastes. Static tests (paste pH, standard acid-base accounting, and net acid generation tests) were performed on these samples. The consistency of the static test results showed that oxidation of sulfide minerals, especially pyrite-which is widely found not only in the alteration zones of volcanic rocks but also in the coals and mine wastes-is the main factor controlling the generation of AMD in this mine. Lack of carbonate minerals in the region also increases the occurrence of AMD.

show abstract

Kinetic tests comparison and interpretation for prediction of the Joutel tailings acid generation potential

Cited by 115 publications

References 8 publications

Diavik Waste Rock Project: Evolution of Mineral Weathering, Element Release, and Acid Generation and Neutralization during a Five-Year Humidity Cell Experiment

Diavik Waste Rock Project: Evolution of Mineral Weathering, Element Release, and Acid Generation and Neutralization during a Five-Year Humidity Cell Experiment

Revue de littérature détaillée sur les tests statiques et les essais cinétiques comme outils de prédiction du drainage minier acide

Prediction of acid mine drainage generation potential of various lithologies using static tests: Etili coal mine (NW Turkey) as a case study

Contact Info

Product

Resources

About