Performance of a commercial industrial-scale UF-based process for treatment of oily wastewaters

Karhu, M.; Kuokkanen, Toivo; Rämö, Jaakko; Mikola, Marja; Tanskanen, Juha

doi:10.1016/j.jenvman.2013.05.053

Cited by 30 publications

(15 citation statements)

References 26 publications

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“…In addition to high oil rejection capacity, these types of membranes have good performance in rejection of total organic carbon (TOC), and reduction of chemical oxygen demand (COD) and total surface charge (TSC) from the O/W emulsions [1,196,197].…”

Section: Membrane Demulsificationmentioning

confidence: 99%

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Zolfaghari

Fakhru’l‐Razi

Abdullah

et al. 2016

Separation and Purification Technology

552

255

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The difficulties associated with transportation and refining of crude oil emulsions as well as produced water discharge limitations are among the conspicuous clues that have led the oilfield researchers to probe into practical demulsification methods for many decades.Inconsistent research outcomes observed in the literature for a particular demulsification method of a typical emulsion (i.e., water-in-oil or oil-in-water) arise not only from the varied influential parameters associated (such as salinity, temperature, pH, dispersed phase content, emulsifier/demulsifier concentration, droplet size, etc.), but also from the diverse types of emulsion constituents (namely oil, surfactant, salt, alkali, polymer, fine solids, and/or other chemicals/impurities). Being the main component in formation of stabilizing interfacial film surrounding the dispersed phase droplets, surfactant is the most predominant contributor to emulsion stability, extent of which depends on its nature (being ionic or nonionic, and its degree of hydrophilicity/lipophilicity), concentration and interaction with other surface-active agents in the emulsion, as well as on the salinity, temperature, and pH of the system. In this paper, it is endeavored to overview some of the most commonly exploited demulsification techniques (i.e., chemical, biological, membrane, electrical, and microwave irradiation) on both the oilfield and synthetic emulsions, taking into account the emulsion-stabilizing anddestabilizing effects with regard to the dominant parameters plus the emulsion composition.Further, the variations occurring in interfacial properties of emulsions by demulsification process are discussed. Finally, the mechanism(s) involved in emulsions resolution achieved by each method is elucidated. Clearly, the most efficient demulsification approach is the one able to attain desirable separation efficiency while complying with the environmental regulations and imposing the least economic burden on the petroleum industry.

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Section: Membrane Demulsificationmentioning

confidence: 99%

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Zolfaghari

Fakhru’l‐Razi

Abdullah

et al. 2016

Separation and Purification Technology

552

255

View full text Add to dashboard Cite

show abstract

“…These characteristics are strongly connected to the surface adsorption capacity [165]. Usually, an effective membrane has high rejection coefficients for total organic carbon (TOC), total surface charge (TSC) and chemical oxygen demand (COD) [166].…”

Section: Membrane Treatment Processesmentioning

confidence: 99%

Membrane separation as a pre-treatment process for oily saline water

et al. 2018

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“…(2016) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] www.deswater.com doi: 10.1080/19443994.2016.1179221 of oil-contaminated effluents to water bodies generate environmental issues all over the globe. Concurrently, the population growth directs to the bigger demand for pure water, primarily in water scarcity regions [3].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…However, the alumina-based inorganic membranes are unfavorable to large-scale industrial applications due to its high cost. Therefore, the research on ceramic membrane is directed to make low-cost membranes by utilizing cheaper starting materials, such as kaolin, mullite, fly ash, apatite powder, and dolomite [10]. In this context, manufacturing reasonably inexpensive inorganic membranes for oil-in-water emulsion treatment is potentially useful for future membrane development research.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Treatment of oil-in-water emulsion using tubular ceramic membrane acquired from locally available low-cost inorganic precursors

Kumar

Monash

Pugazhenthi

2016

Desalination and Water Treatment

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A B S T R A C TThis article highlights the fabrication of ceramic membrane with tubular configuration using locally available inexpensive clays and its application in oil-in-water emulsion treatment. Extrusion technique was employed to manufacture the tubular-shaped ceramic membrane having length, outer, and inner diameters of 100, 12, and 6.5 mm, respectively. Clay powders and the fabricated membrane were characterized using standard techniques such as particle size distribution, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, thermogravimetric (TG), and field emission scanning electron microscopy analysis. The fabricated membrane possessed porosity of 50%, average pore diameter of 0.339 μm, and mechanical strength of 12 MPa with relatively good corrosion resistance in acidic and basic conditions. The effect of various operating conditions such as pressure (69-345 kPa) and cross-flow velocity (0.044-0.132 m/s) on the microfiltration process of oil-in-water emulsion was studied using this membrane with a fixed feed oil concentration of 100 mg/L in a cross flow manner. The research findings indicated that the rejection of oil slightly decreased with the rise in pressure. The best rejection of 99.88% was obtained with permeate flux of 3.40 × 10 −5 m 3 /m 2 s at an applied pressure of 68 kPa after 1 h of experimental run. These results demonstrated the application of the fabricated membrane in oil-in-water emulsion treatment and the treated water can be directly discharged into water bodies. Finally, the estimation of the manufacturing cost of the acquired membrane was presented in detail.

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Performance of a commercial industrial-scale UF-based process for treatment of oily wastewaters

Cited by 30 publications

References 26 publications

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Membrane separation as a pre-treatment process for oily saline water

Treatment of oil-in-water emulsion using tubular ceramic membrane acquired from locally available low-cost inorganic precursors

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