Oxygen Diffusion through Soil Covers on Sulphidic Mine TailingsSource: Journal of Geotechnical Engineering:;1993:;Volume ( 119 ):;issue: 008Author:Ernest K. Yanful
DOI: 10.1061/(ASCE)0733-9410(1993)119:8(1207)Publisher: American Society of Civil Engineers
Abstract: Engineered soil covers are being evaluated under Canada's Mine Environment Neutral Drainage (MEND) program for their effectiveness in preventing and controlling acid generation in sulphidic mill tailings. A critical parameter for predicting the performance of these covers is the diffusion coefficient of gaseous oxygen in the cover materials. Laboratory experiments conducted to determine the effective diffusion coefficient of a candidate cover material, a glacial till from an active mine site, are described. The diffusion coefficient is determined by fitting a semianalytic solution of the one‐dimensional, transient diffusion equation to experimental gaseous oxygen concentration versus time graphs. Effective diffusion coefficients determined at high water saturations (85%–95%) were of the order of
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| contributor author | Ernest K. Yanful | |
| date accessioned | 2017-05-08T20:37:00Z | |
| date available | 2017-05-08T20:37:00Z | |
| date copyright | August 1993 | |
| date issued | 1993 | |
| identifier other | %28asce%290733-9410%281993%29119%3A8%281207%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/21302 | |
| description abstract | Engineered soil covers are being evaluated under Canada's Mine Environment Neutral Drainage (MEND) program for their effectiveness in preventing and controlling acid generation in sulphidic mill tailings. A critical parameter for predicting the performance of these covers is the diffusion coefficient of gaseous oxygen in the cover materials. Laboratory experiments conducted to determine the effective diffusion coefficient of a candidate cover material, a glacial till from an active mine site, are described. The diffusion coefficient is determined by fitting a semianalytic solution of the one‐dimensional, transient diffusion equation to experimental gaseous oxygen concentration versus time graphs. Effective diffusion coefficients determined at high water saturations (85%–95%) were of the order of | |
| publisher | American Society of Civil Engineers | |
| title | Oxygen Diffusion through Soil Covers on Sulphidic Mine Tailings | |
| type | Journal Paper | |
| journal volume | 119 | |
| journal issue | 8 | |
| journal title | Journal of Geotechnical Engineering | |
| identifier doi | 10.1061/(ASCE)0733-9410(1993)119:8(1207) | |
| tree | Journal of Geotechnical Engineering:;1993:;Volume ( 119 ):;issue: 008 | |
| contenttype | Fulltext |