Organic matter degradation in paper sludge amendments over gold mine tailings |
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| Authors: | Christine Cousins Glenn H Penner Bruce Liu Peter Beckett Graeme Spiers |
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| Institution: | 1. Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada P3E 2C6;2. Department of Chemistry, University of Guelph, Ontario, Canada N1G 2W1;3. Department of Biology, Laurentian University, Sudbury, Ontario, Canada P3E 2C6 |
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| Abstract: | The long-term stability of paper sludge amendments as covers for reclaimed mine waste storage facilities must be assessed by the mining industry. This study examines a 6 yr old sequence of paper sludge amendments applied over wastes from historic Au mines located in Northern Ontario, Canada. As paper sludge is mostly comprised of C-rich organic compounds, elemental quantification, 13C cross polarization/magic angle spinning nuclear magnetic resonance (13C CP/MAS NMR) spectroscopy, and Fourier transform infrared (FTIR) spectroscopy were used to examine the minimal changes in the C content and speciation observed of the amendments over time. These results suggest that paper sludge covers are suitable for use in medium to long-term mining reclamation strategies. |
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