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Dissertations / Theses on the topic 'Oil Sands Tailings Pond'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Lévesque, Céleste Marie. "Oil sands process water and tailings pond contaminant transport and fate : physical, chemical and biological processes." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50023.

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The Alberta Oil Sands development has been in operation since the 1960s, where innovations in technology in bitumen extraction have resulted in adaptive management of environmental sensitivities to Oil Sands Process-affected Water (OSPW) and tailings. This research assessed all the potential processes that OSPW constituents might undergo in the tailings impoundments in order to theorize on their ultimate fate. A conceptual tailing pond model was created, the first of its kind as there have been no attempts in the existing literature, and a tool for future management of these facilities. The de

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2

Aida, Farkish. "SAP Based Rapid Dewatering of Oil Sands Mature Fine Tailings." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24251.

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Mature fine tailings (MFT), as a mixture of residual bitumen, sand, silt, fine clay particles and water, are a byproduct of oil sands extraction. The large volume, and poor consolidation and water release ability of MFT have been causing significant economic and environmental concerns. Therefore, several studies have been implemented on finding innovative dewatering/disposal techniques. As a result, different methods have been introduced and tested at a laboratory or a field scale, yet very few of these are commercially used in the oil sands industries. Despite the extensive research, an optim

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3

Muszalski, Piotr. "The role of ultrafine particles in oil sands fine tailings reduction." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/9700.

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Fine tailings exhibit extremely poor dewatering characteristics. The research presented here deals with two closely related projects. The first project concentrated on finding an efficient treatment method for already existing fine tailings. The second project was to evaluate process modifications aimed at fine tailings reduction and to develop an understanding of the effect of electrolyte in the process water of the characteristics of fine tailings. The behavior of ultrafines separated from fine tailings was further investigated. A $\sp2$H NMR technique was applied to determine the gelation r

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4

Proskin, Samuel Albert. "A geotechnical investigation of freeze-thaw dewatering of oil sands fine tailings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0009/NQ34823.pdf.

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5

Redfield, Edmund Bancroft. "Tolerance mechanisms of black spruce, Picea mariana, seedlings exposed to saline oil sands tailings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ60488.pdf.

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6

Dean, Courtney. "Microbiological and geotechnical characterization of oil sands tailings in relation to acid rock drainage." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/51904.

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Traditional disposal of oil sands fine tailings has been a challenge to the industry, and developing new disposal technologies, such as surface deposition, poses alternative challenges. Unsaturated surface deposits of paraffinic froth treatment (TSRU) tailings have the potential to generate acid rock drainage (ARD). To develop environmentally-sound prevention measures to mitigate this risk, such as phage therapy, knowledge of the microbial and geotechnical characteristics of TSRU tailings is essential. To investigate the native microbial population potentially related to ARD generation in surf

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7

TaghinezhadNamini, Masoud. "Microbiological and bioinformatics investigation into acid rock drainage phenomenon in Alberta oil sands tailings." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60440.

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The Alberta oil sands have produced considerable revenue for Canada. However, the environmental effects associated with extracting the oil can be devastating if not understood and dealt with. One of the potential environmental hazards is acid rock drainage (ARD) from oil sand deposits. Acidification is a well-known destructive phenomenon from our mining industry that leads to the pollution of soil and surrounding water resources. Since microorganisms are major contributors in the onset and propagation of ARD, the successful approach to the problem should focus on the microorganisms. Five bacte

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8

Mehta, Punita. "Evaluating the potential of alder-Frankia symbionts for the remediation and revegetation of oil sands tailings." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84099.

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Tailings are the waste produced as a result of the extraction of oil from the tar sands in northern Alberta. Many avenues for the reclamation of tailings are being researched, but one area that has received little attention is phytoremediation. The Alder-Frankia symbiotic relationship in the tailings was investigated for its potential in revegetation and remediation of the tailings. Two species of alders were examined Alnus glutinosa and A. rugosa. The impact of the alders was monitored through the investigation of the differences in the microbial community present in the oil sands tail

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9

Duguay, Anne Madeleine Marie. "The ecotoxicology of oil sands tailings on the freshwater leech, Nephelopsis obscura and the oligochaete worm, Tubifex tubifex." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq24659.pdf.

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10

Madill, Robert Ernest Alvin. "A Tier 1 risk assessment of the PACs in the base/neutral extract from mature oil sands fine tailings porewater." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0010/MQ33249.pdf.

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11

Charlebois, Lawrence E. "On the flow and beaching behaviour of sub-aerially deposited, polymer-flocculated oil sands tailings : a conceptual and energy-based model." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43761.

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This thesis presents the background, observations, and analyses performed during an investigation of the flocculated mature fine tailings (MFT) technology at the Suncor Energy Oil Sands Tailings Reduction Operation (TRO) in Fort McMurray, Alberta, Canada. The sub-aerial flow and deposition of flocculated MFT on a sloping beach can be described in the context of a rheology-energy conceptual model. The conceptual model, or flow map, can provide deposition cell designers and operators with a useful framework for managing beach development in a sub-aerial deposition cell. Observations during fie

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12

Sarkar, Bithun. "Adsorption of Single-ring Model Naphthenic Acid from Oil Sands Tailings Pond Water Using Petroleum Coke-derived Activated Carbon." Thesis, 2013. http://hdl.handle.net/1807/35685.

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Petroleum coke-derived activated carbons were prepared and used for the adsorptive removal of a single-ring naphthenic acid (NA) from synthetic oil sands tailings pond water (TPW). The overall adsorption process was found to be intra-particle diffusion-controlled. The Weber-Morris intra-particle diffusion rate constants decreased from 7.43 to 1.23 mg/g min0.5 after activated carbon was post-oxidized with oxygen, suggesting a hindering effect of oxygen surface groups. The Freundlich model fit of the equilibrium adsorption isotherms and the small negative ΔHo pointed to a physisorption-dominated

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13

Small, Christina. "Activation of Delayed and Fluid Petroleum Coke for the Adsorption and Removal of Naphthenic Acids from Oil Sands Tailings Pond Water." Master's thesis, 2010. http://hdl.handle.net/10048/1666.

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Oil sands companies produce substantial quantities of tailings known to contain high concentrations of dissolved organic by-products. The use of petroleum coke was proposed as a potential adsorbent for organic contaminant removal from tailings pond water. Physical activation was used to create a greater surface area and porosity within the delayed and fluid coke. Increased temperature (900oC), steam rate (0.5 mL/min), and activated time (6 h) led to high iodine numbers of 670 and 620 mg/g for activated delayed and fluid cokes, respectively. For both best activated cokes, the micropore to mesop

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14

Hongjing, Fu. "Degradation of Naphthenic Acids in Athabasca Oil Sands Process-Affected Water Using Ozone." Master's thesis, 2011. http://hdl.handle.net/10048/1771.

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In order to determine the degradation of Naphthenic Acids (NAs) in oil sands process-affected water (OSPW), a series of semi-batch ozonation experiments have been conducted resulting in a maximum reduction of NAs greater than 99%. Compared to the high NAs removal, the reduction of both COD and DOC was much lower under the same conditions. Following ozone treatments of approx. 80 mg/L, the cBOD5 and cBOD5/COD tripled as compared to original OSPW measurements, suggesting ozone-treated OSPW has a higher biodegradability. The ozone treatments also detoxified the OSPW; with an ozone treatment of

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15

Zhang, Chenxi. "Cross flow filtration of oil sands total tailings." Master's thesis, 2010. http://hdl.handle.net/10048/1201.

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Thesis (M. Sc.)--University of Alberta, 2010.<br>Title from pdf file main screen (viewed on July 15, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Geotechnical Engineering, Department of Civil and Environmental Engineering, University of Alberta. Includes bibliographical references.

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16

Silawat, Jeeravipoolvarn. "Geotechnical Behavior of In-Line Thickened Oil Sands Tailings." Phd thesis, 2010. http://hdl.handle.net/10048/1138.

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This research is an experimental, field and numerical study of the sedimentation and consolidation of in-line thickened oil sands fine tailings. In-line thickening is a process that adds flocculant and coagulant into a modified tailings pipeline in a multi stage fashion to improve the dewatering behaviour of oil sands fine tailings cyclone overflow. The parent untreated cyclone overflow, in-line thickened tailings and sheared in-line thickened tailings were investigated in the laboratory. In-line thickened tailings were produced in the laboratory using the same process as in the field project

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17

Wang, Xiaoyan. "Polymer Aids for Settling and Filtration of Oil Sands Tailings." Master's thesis, 2009. http://hdl.handle.net/10048/857.

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Commercial Magnafloc 1011and in-house synthesized Al-PAM were used as flocculants for model tailings, laboratory extraction tailings and tailings from paraffin froth treatment unit. The polymers were tested for their flocculation ability in settling and filtration. For model tailings, both polymers showed excellent ability to improve the settling and filtration performance. Magnafloc 1011 is found sensitive to overdosing, but Al-PAM is not sensitive to the dosage within the tested range. For the laboratory extraction tailings, both polymers showed excellent ability to enhance settling. Al-PA

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18

"The mobility of petroleum hydrocarbons in Athabasca oil sands tailings." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-09-1345.

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Several oil sands tailings from Suncor Energy Inc. were analysed with respect to the mobility and solubility of the petroleum hydrocarbon (PHC) contaminants. At sites where oil sands tailings materials have been disposed of and are covered with a growing medium, the PHCs from the tailings may slowly migrate into the reclamation cover, increasing their availability to the plants in the cover system, which could be detrimental to the development and establishment of the plant cover system. This study characterized the PHC content of the tailings and quantified the desorption and diffusion coeff

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19

Naeth, Anne. "Plant species suitability for reclamation of oil sands consolidated tailings." 2002. http://hdl.handle.net/2429/9425.

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Oil sand companies are evaluating techniques to solidify wet slurries and produce a non-segregating tailings stream known as consolidated or composite tailings (CT). Successful establishment of vegetation directly on CT can contribute to dewatering and assist in meeting reclamation objectives. The goal of this research was to develop a list of plant species which may be suitable for dewatering and reclamation of consolidated tailings. A growth chamber study was conducted in 1999 and a greenhouse study in 2001. In total, 44 native grasses, 50 native forbs, 8 introduced grasses and 4 introduce

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20

Li, Carmen. "Methanogenesis in oil sands tailings an analysis of the microbial community involved and its effects on tailings densification /." Master's thesis, 2010. http://hdl.handle.net/10048/959.

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Thesis (M. Sc.)--University of Alberta, 2010.<br>Title from pdf file main screen (viewed on June 18, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Microbiology and Biotechnology, Department of Biological Sciences, University of Alberta. Includes bibliographical references.

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21

"Investigating the phytotoxicity of oil sands tailings water formed during atmospheric fines drying processing." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-05-1037.

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Oil sands operators are being faced with the challenge of reclaiming the large volumes of slurry tailings created during oil sands processing. New regulations mandate that operators must minimize fluid tailings by capturing fines in dedicated disposal areas, leading to a ‘trafficable’ or solid deposit. Adding a polyacrylamide polymer to the tailings and thinly spreading them over a sloped disposal area (a process developed by Shell Canada Energy known as the atmospheric fines drying or AFD process) has been shown to enhance the dewatering of tailings which leads to a dry deposit at a much fast

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22

Guo, Chengmai. "Rapid densification of the oil sands mature fine tailings (MFT) by microbial activity." Phd thesis, 2009. http://hdl.handle.net/10048/702.

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Thesis (Ph.D.)--University of Alberta, 2009.<br>Title from PDF file main screen (viewed on Feb. 19, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Geotechnical Engineering, [Department of] Civil and Environmental Engineering, University of Alberta. Includes bibliographical references.

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23

Mihiretu, Yetimgeta. "Fundamentals of Segregation." Phd thesis, 2009. http://hdl.handle.net/10048/796.

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A common challenge during deposition of slurries is segregation as large particles settle through the matrix of fines and water. Whether segregation occurs or not depends on the grain size distribution of the solids, the void ratio or solids content and the rheological properties of the fines-water matrix. The rheological characterization of slurry composed of different grain sizes and varying water chemistry was investigated. The vane yield stress was used to characterize different slurries composed of clay, silt and sand materials. Semi-empirical fractal theory showed good agreement with ex

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24

"Biogeochemical investigation of centrifuged fine tailings deposits at an oil sands mine in Northern Alberta, Canada." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-09-2334.

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Centrifuged fine tailings (CFT) technology was developed to reduce volumes of fluid fine tailings (FFT) stored in tailings ponds at oil sands mines. Increasing FFT inventories in tailings ponds results from slow settlement of clay minerals suspended in oil sands process-affected water (OSPW). High sodium (Na) concentrations in OSPW increase the electrical double layer (EDL) thickness at clay-mineral surfaces, which hinders aggregation and, therefore, settlement. Production of CFT involves dredging FFT from tailings ponds, amending with polyacrylamide and gypsum, and decanter centrifuging. This

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25

"Plant growth promotion on and phytoremediation of Athabasca oil sands coarse tailings using the endophytic fungus, Trichoderma harzianum TSTh20-1." Thesis, 2014. http://hdl.handle.net/10388/ETD-2014-02-1436.

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The environmental impact of bitumen mining in the Athabasca region of Canada is of growing concern. Among these concerns is the need and difficulty to remediate and reclaim affected land, including tailing sands (TS), a byproduct of the hot water extraction used to separate bitumen from solid materials. Current reclamation methods consist of multiple steps and take several decades to be effective. The primary reason for the difficulty in reclaiming disturbed land is the harsh environment found within the TS combined with the scale of the problem. TS are extremely nutrient poor, having below-de

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26

Miller, Warren Gregory. "Comparison of geoenvironmental properties of caustic and noncaustic oil sand fine tailings." Phd thesis, 2010. http://hdl.handle.net/10048/1497.

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A study was conducted to evaluate the properties and processes influencing the rate and magnitude of volume decrease and strength gain for oil sand fine tailings resulting from a change in bitumen extraction process (caustic versus non-caustic) and the effect of adding a coagulant to caustic fine tailings. Laboratory flume deposition tests were carried out with the objective to hydraulically deposit oil sand tailings and compare the effects of extraction processes on the nature of beach deposits in terms of geometry, particle size distribution, and density. A good correlation exists between fl

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27

Mannix, Amy Elinor. "Analysis of the cost effectiveness of alternative policies and technologies to manage water extractions by the oil sands sector along the lower Athabasca River." Master's thesis, 2009. http://hdl.handle.net/10048/507.

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The Lower Athabasca Water Management Framework limits water extractions by the oil sands industry near Fort McMurray, Alberta. To increase water-use efficiency and minimise the cost of water restrictions, several policy and technology options were developed and assessed using quantitative and qualitative methods. Selected options were the policies of water trade and pricing with refund, and the technologies of storage, and consolidated tailings and increased recycling. Options were designed based on year 2020 demand and assessed relative to prior allocation. Using linear programming and st

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28

Vachon, Rémi. "Développement de nouveaux polymères amphiphiles comme floculants versatiles pour le traitement de l’eau issue de l’industrie pétrolière." Thèse, 2015. http://hdl.handle.net/1866/13750.

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Les polymères hydrosolubles sont utilisés dans diverses industries pour permettre la floculation, soit une séparation solide-liquide de particules présentes en suspension colloïdale. Afin de réduire les impacts environnementaux de l’exploitation des sables bitumineux en Alberta, l’industrie est à la recherche de nouveaux moyens et procédés pour traiter les résidus miniers permettant de séparer les matières solides et de récupérer l’eau. L’objectif des travaux présentés est d’améliorer la floculation, la densification et la déshydratation de ces résidus miniers aqueux par de nouveaux polymères

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