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Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake./
Author:	Li, Yingzhe.
Description:	1 online resource (95 pages)
Notes:	Source: Masters Abstracts International, Volume: 85-10.
Contained By:	Masters Abstracts International85-10.
Subject:	Biogeochemistry. -
Online resource:	click for full text (PQDT)
ISBN:	9798382192659

Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake.
Li, Yingzhe.

Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake. - 1 online resource (95 pages)

Source: Masters Abstracts International, Volume: 85-10.

Thesis (M.A.S.)--University of Toronto (Canada), 2024.

Includes bibliographical references

This experimental study examined sulfur reduction, methanogenesis, anaerobic oxidation of methane and their relative responses to labile organic carbon amendment (lactate and microalgae) in simulated oil sands pit lake (PL; Base Mine Lake; BML) fluid fine tailings- water interface (FWI) microcosms. Respective sulfate reduction and methanogenesis rates of 1.7 and 1.1 μmol/L/day both increased up to 240 μmol/L/day with labile organic carbon supplementation. Further, sulfur reduction inhibited methanogenesis under labile carbon limiting conditions, but increased methanogenesis under high labile carbon loads. Increasing the rates of both processes pose a risk to BML water cap oxygen dynamics associated with the generation of oxygen consuming constituents, sulfide, and methane. Results identify that managing the balance between oxygen producing primary production and subsequent oxygen consumption through aerobic and anaerobic algal biomass decomposition will be critical to prevent increasing episodic anoxia currently observed in BML, informing future PL design as a fluid fine tailings (FFT) closure reclamation strategy.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798382192659Subjects--Topical Terms:

642004
Biogeochemistry.
Subjects--Index Terms:

MicroalgaeIndex Terms--Genre/Form:

554714
Electronic books.

Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake.
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502 $a Thesis (M.A.S.)--University of Toronto (Canada), 2024.
504 $a Includes bibliographical references
520 $a This experimental study examined sulfur reduction, methanogenesis, anaerobic oxidation of methane and their relative responses to labile organic carbon amendment (lactate and microalgae) in simulated oil sands pit lake (PL; Base Mine Lake; BML) fluid fine tailings- water interface (FWI) microcosms. Respective sulfate reduction and methanogenesis rates of 1.7 and 1.1 μmol/L/day both increased up to 240 μmol/L/day with labile organic carbon supplementation. Further, sulfur reduction inhibited methanogenesis under labile carbon limiting conditions, but increased methanogenesis under high labile carbon loads. Increasing the rates of both processes pose a risk to BML water cap oxygen dynamics associated with the generation of oxygen consuming constituents, sulfide, and methane. Results identify that managing the balance between oxygen producing primary production and subsequent oxygen consumption through aerobic and anaerobic algal biomass decomposition will be critical to prevent increasing episodic anoxia currently observed in BML, informing future PL design as a fluid fine tailings (FFT) closure reclamation strategy.
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538 $a Mode of access: World Wide Web
650 4 $a Biogeochemistry. $3 642004
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650 4 $a Aquatic sciences. $3 1178821
653 $a Microalgae
653 $a Organic carbon
653 $a Methanogenesis
653 $a Fluid fine tailings
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