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Curi, A. C., Granda, W. J. V., Lima, H. M., & Sousa, W. T. (2006). Zeolites and their application in the decontamination of mine waste water. Informacion Tecnologica, 17(6), 111–118.
Abstract: This paper describes the genesis, structure and classification of natural zeolites, including their most relevant properties such as porosity, adsorption and ionic exchange. The use of natural zeolites in the treatment of effluents containing heavy metals is reviewed based on current literature. These uses are focused on mineral-metallurgical effluents and mercury pollution related to artisan mining activities. The study shows that natural zeolites are efficient in removal of heavy metals in metal mining effluents, can be produced and improved at a low cost, and can also be used to adsorb mercury vapors from ovens used to fire amalgams.
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Herbert, R. B., Jr., Benner, S. G., & Blowes, D. W. (1998). Reactive barrier treatment of groundwater contaminated by acid mine drainage; sulphur accumulation and sulphide formation. In M. Herbert, & K. Kovar (Eds.), Groundwater Quality: Remediation and Protection (pp. 451–457). IAHS-AISH Publication, vol.250.
Abstract: A permeable reactive barrier was installed in August 1995 at the Nickel Rim Mine near Sudbury, Ontario, Canada, for the passive remediation of groundwater contaminated with acid mine drainage. The reactive component of the barrier consists of a mixture of municipal and leaf compost and wood chips: the organic material promotes bacterially-mediated sulphate reduction. Hydrogen sulphide, a product of sulphate reduction, may then complex with aqueous ferrous iron and precipitate as iron sulphide. This study presents the solid phase sulphur chemistry of the reactive wall after two years of operation, and discusses the formation and accumulation of iron sulphide minerals in the reactive material. The results from the solid-phase chemical analysis of core samples indicate that there is an accumulation of reduced inorganic sulphur in the reactive wall, with levels reaching 190 mu mol g (super -1) (dry weight) by July 1997.
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Taylor, J., & Waters, J. (2003). Treating ARD; how, when, where and why. Mining Environmental Management, 11(3), 6–9.
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