Demulsification of water/oil/solid emulsions by hollow‐fiber membranes

Tirmizi, Neena.; Raghuraman, B.; Wiencek, John M.

doi:10.1002/aic.690420508

Cited by 62 publications

(31 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1b, inset. Capillary force-based separation. Very few reports on membrane separation 25,32,33 and microfluidics 34,35 have used the difference in capillary forces acting on the two phases as the primary mechanism to separate emulsions or dispersions. We call this methodology capillary force-based separation (CFS).…”

Section: Wetting Behaviour Of Water and Oilmentioning

confidence: 99%

Hygro-responsive membranes for effective oil–water separation

et al. 2012

View full text Add to dashboard Cite

There is a critical need for new energy-efficient solutions to separate oil-water mixtures, especially those stabilized by surfactants. Traditional membrane-based separation technologies are energy-intensive and limited, either by fouling or by the inability of a single membrane to separate all types of oil-water mixtures. Here we report membranes with hygro-responsive surfaces, which are both superhydrophilic and superoleophobic, in air and under water. our membranes can separate, for the first time, a range of different oil-water mixtures in a singleunit operation, with >99.9% separation efficiency, by using the difference in capillary forces acting on the two phases. our separation methodology is solely gravity-driven and consequently is expected to be highly energy-efficient. We anticipate that our separation methodology will have numerous applications, including the clean-up of oil spills, wastewater treatment, fuel purification and the separation of commercially relevant emulsions.

show abstract

Section: Wetting Behaviour Of Water and Oilmentioning

confidence: 99%

Hygro-responsive membranes for effective oil–water separation

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Preferential surface wetting allows separation of the phases via ultrafiltration and microfiltration membranes. The effectiveness of cellulose-based membranes in the cleaning up of oilcontaminated water has been demonstrated in a number of studies (Zaidi et al 1992;Hlavacek 1995;Koltuneiwiz and Field 1996;Tirmizi et al 1996;Hong et al 2002;Zou et al 2003;Li et al 2009;Wang et al 2010).…”

Section: Demulsification In Packed Beds and Membranesmentioning

confidence: 99%

“…Factors that can influence the efficiency of such separations include the material's hydrophilic or oleophilic nature, the pore size, the applied pressure, and the velocity of cross-flow, etc. (Kotuneiwicz and Field 1996;Tirmizi et al 1996). The following authors found that hydrophobized cellulosic fibers were able to selectively remove oily emulsion droplets from aqueous solution (Sun et al 1999;Ribeiro et al 2001Ribeiro et al , 2003Rattanawong et al 2007;Ibrahim et al 2009;Wang et al 2010).…”

Section: Demulsification In Packed Beds and Membranesmentioning

confidence: 99%

“…Studies have shown that O/W emulsions can be separated into their respective oil and aqueous phases by use of a suitable membrane or packed bed (Zaidi et al 1992;Lee and Han 1993;Juang and Jiang 1994;Hlavacek 1995;Koltuneiwicz and Field 1996;Matsumoto et al 1999;Sun et al 1998Sun et al , 1999Tirmizi et al 1996;Briscoe et al 2000;Hong et al 2002;Kocherginsky et al 2003;Zou et al 2003;Li et al 2009). While most attention has been focused on uses of hydrophilic membrane materials, the feasibility of using hydrophobic membranes also has been demonstrated (Daiminger et al 1995).…”

Section: Membrane Use To Separate Oil From Watermentioning

confidence: 99%

See 1 more Smart Citation

Cellulosic Substrates for Removal of Pollutants from Aqueous Systems: A Review. 3. Spilled Oil and Emulsified Organic Liquids

Hubbe

Rojas

Fingas³

et al. 2013

BioResources

View full text Add to dashboard Cite

“…Hence, oil spill accidents have attracted intense attention. Methods have been developed for the removal of oils and organic solvents from polluted water such as gravity separation (Kwon et al 2012), filtration (Tirmizi et al 1996), centrifuge, flotation, and electrochemical methods (Ichikawa and Nakajima 2004). However, the relatively complicated production equipment or operation procedures limit the actual applications for oil/water separation.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Superhydrophobic/Superoleophilic Cotton for Highly Efficient Oil/Water Separation

Wang¹,

Yu²,

Chen³

et al. 2016

BioResources

View full text Add to dashboard Cite

a This paper presents a facile and versatile strategy to fabricate robust and superhydrophobic/superoleophilic cotton for the removal of oils and organic solvents from polluted water. The superwettability cotton was prepared via in-situ hydrolysis of tetraethoxysilane (TEOS) on the cotton fiber surface using polyvinylpyrrolidone (PVP) as a coupling agent and subsequent hexadecyltrimethoxysilane modification. By simply adjusting the molecular weight of PVP and the concentration of NH3•H2O, the surface roughness of SiO2-modified cotton fibers could be well controlled to generate cotton fibers with excellent superhydrophobicity. The prepared cotton fibers were used as superabsorbents for oil/water separation. It absorbed up to 35 times and 50 times its own weight of nhexane and chloroform, respectively, while repelling water completely. After collecting the absorbed oils via a simple squeezing method, the cotton could be reused for at least 5 cycles. Moreover, the whole procedure was carried out in a mild environment, with no intricate instruments or toxic reagents.

show abstract

Demulsification of water/oil/solid emulsions by hollow‐fiber membranes

Cited by 62 publications

References 18 publications

Hygro-responsive membranes for effective oil–water separation

Hygro-responsive membranes for effective oil–water separation

Cellulosic Substrates for Removal of Pollutants from Aqueous Systems: A Review. 3. Spilled Oil and Emulsified Organic Liquids

Facile Fabrication of Superhydrophobic/Superoleophilic Cotton for Highly Efficient Oil/Water Separation

Contact Info

Product

Resources

About