00000nam 2200000zi 4500 9.877331 CaOODSP 20241203113651 m o d f cr bn||||||||| 190801s1994 onca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on En13-5/94-04E-PDF Brassard, Pierre, 1950- author. Potential use of crown pillar pit in a demonstration project of the feasibility of subaqueous disposal of acid generating metal mine tailings / Pierre Brassard and Alena Mudroch. Burlington, Ontario : National Water Research Institute = Institut national de recherche sur les eaux, [1994] 1 online resource (26 pages, 8 unnumbered pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 94-04 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 24-25). "A simple model is proposed to predict the rate of oxidation of metal mine tailings disposed on the bottom of a meromictic pit at a mining site near Ignace, Ontario. The consumption of oxygen in the pit water by disposed tailings is limited by diffusion across the thermocline, and can only reach a maximum value depending on the depth and morphometry of the pit. The standard acid-base accounting method is used to characterize the neutralization potential of the disposed tailings. Theoretical calculation shows that the amount of calcite needed to neutralize the generated acid by oxidation of the tailings has to be considered, and is related to the desired ambient pH"--Abstract, page 2. gccst Mining industry gccst Waste disposal Mudroch, Alena, author. Canada. Environment Canada. National Water Research Institute (Canada). Lakes Research Branch. McMaster University. Department of Chemistry. National Water Research Institute (Canada) NWRI contribution ; no. 94-04. (CaOODSP)9.844121 PDF 2.29 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-94-04-eng.pdf