Removal of organics from offshore produced waters using nanofiltration membrane technology

Dyke, C.A.; Bartels, Craig

doi:10.1002/ep.670090320

Cited by 26 publications

(15 citation statements)

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“…A key parameter is feedwater pH, which determines the surface charge on membranes and the speciation of target compounds, and thereby influences the electrostatic repulsion of charged solutes (e.g., Hagmeyer and Gimbel 1998). A similar relationship between pH and rejection of organic solutes by nanofiltration membranes has been demonstrated for carboxylic acids, benzoic and sulphonic acids (Dyke and Bartels 1990;Bellona and Drewes 2005). For example, low solution pH decreases the rejection of natural organic matter by condensing its molecular structure (Braghetta et al 1997).…”

Section: Nanofiltrationmentioning

confidence: 88%

“…As previously discussed, Peng et al (2004) demonstrated successful removal of naphthenic acids and divalent salts from oil sands process waters with several types of nanofiltration membranes. In another study, pilot-scale (14 m 3 /d) nanofiltration of offshore produced water achieved 72%-89% rejection of freon-extractable organics and 15%-20% rejection of salts (Dyke and Bartels 1990).…”

Section: Nanofiltrationmentioning

confidence: 96%

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Process water treatment in Canada’s oil sands industry: II. A review of emerging technologies

Allen

2008

Journal of Environmental Engineering and Science

166

131

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Canada's oil sands industry uses large volumes of freshwater to extract bitumen from surface-mined ore. With oil production expected to increase 3-fold over the next decade, process water treatment has become a critical issue for oil sands operators, both in terms of sustaining bitumen recovery and protecting freshwater resources. To identify candidate treatment technologies, a review was conducted on the state-of-the-art of water treatment in the oil industry. Significant developments include (i) chemical modifications to adsorbents and membranes to improve pollutant removal and reduce fouling; (ii) hybridization of adsorbent, membrane, and bioreactor technologies to enhance the biological treatment of toxic feedwaters; (iii) advances in photocatalytic oxidation of organic compounds; and (iv) implementation of large-scale treatment wetlands to treat hydrocarbon-contaminated wastewaters. In adapting treatment technologies to the oil sands, operators will need to consider the fouling potential of bitumen and fine clays, the effect of process water alkalinity on treatment performance, and the biodegradability of toxic organic compounds.Résumé : L'industrie des sables bitumineux au Canada utilise d'importants volumes d'eau douce afin d'extraire le bitume du minerai prélevé en surface. En considérant que la production de pétrole devrait tripler au cours de la prochaine décennie, le traitement de l'eau de procédé devient une préoccupation cruciale pour les exploitants des sables bitumineux en termes de récupération durable du pétrole et de la protection des ressources en eau douce. Afin d'identifier des technologies de traitement potentielles, un examen de l'état des connaissances sur le traitement des eaux a été réalisé pour l'industrie du pétrole. Les développements importants comprennent : (i) des modifications chimiques aux adsorbants et aux membranes afin d'améliorer l'élimination des polluants et réduire le colmatage; (ii) l'hybridation de l'adsorbant, la membrane et les technologies des bioréacteurs afin d'améliorer le traitement biologique des eaux d'entrée toxiques; (iii) des progrès dans l'oxydation photocatalytique des composés organiques; et (iv) l'implantation de marécages de traitement à grande échelle afin de traiter les eaux usées contaminées par les hydrocarbures. En adoptant ces technologies de traitement aux sables bitumineux, les exploitants devront tenir compte du potentiel de colmatage du bitume et des argiles fines, de l'effet de l'alcalinité de l'eau de procédé sur le rendement du traitement, ainsi que de la biodégradabilité des composés organiques toxiques.

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Section: Nanofiltrationmentioning

confidence: 88%

Section: Nanofiltrationmentioning

confidence: 96%

Process water treatment in Canada’s oil sands industry: II. A review of emerging technologies

Allen

2008

Journal of Environmental Engineering and Science

166

131

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“…In order to effectively reduce or eliminate toxicity of OSPW, a treatment approach that can directly target NAs is required. Several researchers explored the effectiveness of using different technologies in the treatment of OSPW, such as: adsorption (Hansen and Davies, 1994;Marr et al, 1996;Adhoum and Monser, 2004), micro-and ultrafiltration (Bilstad and Espedal, 1996;Lin and Lan, 1998;Campos et al, 2002), nanofiltration, reverse osmosis, and electrodialysis (Dyke and Bartels, 1990;Agenson et al, 2003;Peng et al, 2004), biological treatment (Doran et al, 1998;Tellez et al, 2002;Campos et al, 2002), and advanced oxidation (Bettle and Tittlebaum, 1995;Li et al, 2006;Scott et al, 2008;Martin et al, 2010;He et al, 2012He et al, , 2010Garcia-Garcia et al, 2011;Gamal El-Din et al, 2011;Pérez-Estrada et al, 2011;Anderson et al, 2012;Pereira et al, 2013;Hwang et al, 2013). Allen (2008b) had reviewed the above emerging technologies in the treatment of the OSPW.…”

Section: Treatment Of Naphthenic Acidsmentioning

confidence: 99%

A study on ozonation and ozone based advanced oxidation processes for the removal of naphthenic acids from water: kinetic studies modelling and optimal control

jibouri¹

2021

Preprint

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Industrial wastewater is one of the largest environmental challenges of this century. Most of these wastewaters contain non-biodegradable pollutants which need special treatment methods. Advanced oxidation processes (AOP’s), such as, ozonation, catalytic ozonation and ozone/ hydrogen peroxide have proved their effectiveness on the degradation of bio-recalcitrant pollutants. The main drawback in these processes is the high operating cost. The objective of this study was to develop innovative continuous ozonation and ozone based processes that can effectively degrade industrial non-biodegradable pollutants. Naphthenic acids (NAs) was used as the model pollutant in this study due to its importance as a major pollutant in oil and oil sands industries. The target was to convert bio-recalcitrant NAs into biodegradable substances with minimum consumption of ozone gas (operating cost). These processes can be followed by the biodegradation process to fully remove the rest of the pollutants. This research passed through several stages including screening of operating parameters, kinetic studies, and modeling, followed by optimal control of these processes. It was found that ozone concentration had the most significant effect on the NAs degradation compared to other parameters. The kinetics of direct and indirect (radical) ozonation of NAs were investigated and rate constants and activation energies of these reactions were determined. Catalytic ozonation of NAs was explored using alumina supported metal oxides and unsupported catalysts. Activated carbon was found to be the most effective catalyst. The addition of hydrogen peroxide into the ozonation systems significantly improved the removal of NAs compared with the ozonation only process. Models based on mass balance for the ozonation and ozone/ hydrogen peroxide processes were developed to predict the concentration profiles of reacting species. Optimal control policies of ozone/oxygen gas flow rate versus time were developed and validated to minimize NAs concentration in the liquid outlet stream from the continuous ozonation and ozone/ hydrogen peroxide processes. The experimental results demonstrated that the optimal control policies successfully minimized NAs concentration in the outlet stream. At the same time, ozone gas consumption was reduced to its minimum, i.e., just enough to minimize the concentration of NAs in the outlet stream.

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“…Meanwhile, these waters are mostly at high temperature and pH, which can affect the membrane integrity of current commercial membranes. In some applications, these streams must be cooled or pH tuned solely to accommodate a membrane separation process, after which the processed fluid will be readjusted back to an initial condition (e.g., pH) to optimize steam production reliability [26][27][28]. This temperature and pH adjustment requires a significant amount of energy and chemicals.…”

Section: Oil Sands-produced Water Treatment By Nanofiltrationmentioning

confidence: 99%

Nanofiltration for the Treatment of Oil Sands-Produced Water

Sadrzadeh¹,

Pernitsky²,

McGregor³

2018

Nanofiltration

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This chapter summarizes nanofiltration (NF) studies focused on the treatment of thermal in-situ steam-assisted gravity drainage (SAGD)-produced water streams in the Alberta, Canada, oil sands industry. SAGD processes use recycled produced water to generate steam, which is injected into oil-bearing formations to enhance oil recovery. NF has potential applications in the produced water recycling treatment process for water softening, dissolved organic matter removal, and partial desalination, to improve recycle rates, reduce make-up water consumption, and provide an alternative to desalination technologies (thermal evaporation and reverse osmosis). The aim of this study was to provide proofof-concept for NF treatment of the following produced water streams in the SAGD operation: warm lime softener (WLS) inlet water, boiler feed water (BFW), and boiler blowdown (BBD) water. Commercial NF membranes enabled removal of up to 98% of the total dissolved solids (TDS), total organic carbon (TOC), and dissolved silica, which is significant compared to the removal achieved using conventional SAGD-produced water treatment processes. More than 99% removal of divalent ions was achieved using tight NF membranes, highlighting the potential of NF softening for oil sands-produced water streams. The NF process configurations studied provide feasible process arrangements suitable for integration into existing and future oil sands and other produced water treatment schemes.

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Removal of organics from offshore produced waters using nanofiltration membrane technology

Cited by 26 publications

References 1 publication

Process water treatment in Canada’s oil sands industry: II. A review of emerging technologies

Process water treatment in Canada’s oil sands industry: II. A review of emerging technologies

A study on ozonation and ozone based advanced oxidation processes for the removal of naphthenic acids from water: kinetic studies modelling and optimal control

Nanofiltration for the Treatment of Oil Sands-Produced Water

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