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Microcosm Characterization of Microb...

Li, Yingzhe.

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

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake./
Author:	Li, Yingzhe.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
Description:	95 p.
Notes:	Source: Masters Abstracts International, Volume: 85-10.
Contained By:	Masters Abstracts International85-10.
Subject:	Biogeochemistry. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30989983
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. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 95 p.

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

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

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.

ISBN: 9798382192659Subjects--Topical Terms:

545717
Biogeochemistry.
Subjects--Index Terms:

Microalgae

Microcosm Characterization of Microbial Sulfur and Carbon Interactions Within the First Pilot Oil Sands Pit Lake, Base Mine Lake.
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300 $a 95 p.
500 $a Source: Masters Abstracts International, Volume: 85-10.
500 $a Advisor: Warren, Lesley.
502 $a Thesis (M.A.S.)--University of Toronto (Canada), 2024.
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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650 4 $a Environmental science. $3 677245
650 4 $a Aquatic sciences. $3 3174300
653 $a Microalgae
653 $a Organic carbon
653 $a Methanogenesis
653 $a Fluid fine tailings
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690 $a 0768
690 $a 0792
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