2010
DOI: 10.1016/j.chemosphere.2010.07.058
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Relation between the activity of anaerobic microbial populations in oil sands tailings ponds and the sedimentation of tailings

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Cited by 43 publications
(22 citation statements)
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“…The effects of methanogens in oil sands extend beyond their biodegradation and methane production ability. Methanogens can slow sedimentation and densification in tailing ponds, hindering water recycling and increasing the amount of fresh water required for bitumen extraction [17,31]. Through degradation of residual oil, methanogens can re-pressurize a petroleum reservoir allowing for greater recovery of residual oil [28].…”
Section: Methanogensmentioning
confidence: 99%
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“…The effects of methanogens in oil sands extend beyond their biodegradation and methane production ability. Methanogens can slow sedimentation and densification in tailing ponds, hindering water recycling and increasing the amount of fresh water required for bitumen extraction [17,31]. Through degradation of residual oil, methanogens can re-pressurize a petroleum reservoir allowing for greater recovery of residual oil [28].…”
Section: Methanogensmentioning
confidence: 99%
“…Oil sands tailings and tailings sediments from the Athabasca Oil Sands [17] Archaeal Methanosaeta spp. Mature fine tailings from Mildred Lake Settling Basin and West In-Pit in the Athabasca Oil Sands [83] Archaeal Methanomethylovorans spp.…”
Section: Methanomethylovorans Hollandicamentioning
confidence: 99%
“…Very few studies have reported on the rates of both sedimentation and consolidation in a column of suspended soil or tailings particles, likely because this is experimentally difficult. The movement of dilute suspensions of colloidal particles in a centrifugal force field can be studied with an analytical ultracentrifuge, using appropriate optical systems to determine movement of the sedimenting boundary in real time 1, 12. However, of the two rates that need to be monitored, the rate of consolidation is likely to be even more important for tailings pond management than that of sedimentation.…”
Section: Sedimentation and Consolidation Of Tailingsmentioning
confidence: 99%
“…Addition of nitrate to tailings ponds fosters growth of nitrate‐reducing bacteria (NRB), which couple oxidation of hydrocarbon to reduction of nitrate to mostly N 2 through a nitrite intermediate. Stimulating microbial activity by adding lactate as a good carbon and energy source and either (i) CaCl 2 or NaCl, (ii) CaSO 4 or Na 2 SO 4 , or (iii) Ca(NO 3 ) 2 or NaNO 3 stimulated methanogens, SRB, or NRB, respectively 16, 27. The solid content of the tailings increased from 69 to 78% (w/w) in about one month under methanogenic and nitrate‐reducing conditions, but less so under sulfate‐reducing conditions, suggesting that microbial gas formation may be causing this enhanced densification.…”
Section: Microbial Enhancement Of Tailings Densificationmentioning
confidence: 99%
“…In Alberta, Canada, the exploration of oil sands generates significant amount of tails stored in tailings ponds that cover 176 km 2 (Allen, 2008). Fugitive air emission of VOC and GHG from these tailings ponds occurs due to evaporation and chemical/biological activities (Bordenave et al, 2010;Penner and Foght, 2010;Siddique et al, 2011Siddique et al, , 2012Yeh et al, 2010). Typical lagoons in municipal waste management centers produce CO 2 and CH 4 through aerobic, anaerobic, and facultative bacterial decomposition processes (Hamilton et al, 2006;Sharpe and Harper, 1999).…”
Section: Introductionmentioning
confidence: 99%