Chinese Journal of Chemical Engineering
Chin.J.Chem.Eng.  2012, Vol. 20 Issue (4): 654-658    DOI:
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Electrostatic Enhancement of Coalescence of Oil Droplets(in Nanometer Scale) in Water Emulsion
Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
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Abstract Oil droplets in nanometer scale which are dispersed in water cannot be separated easily.An attractive technique is carried out by electrical phenomena to demulsify oil in water emulsion.In this research,non-uniform electric field or dielectrophoresis(DEP) is applied to remove sunflower oil(which is dispersed in the water).Effects of temperature,time and voltage(using AC-electric field) were considered to get the highest DEP-force(Fdi) and the best results.The oil particles sizes with average of approximately 76 nm have been shown using a ZetaSizer Nano ZS,Model ZEN 1600(Malvern Instrument Ltd.).The maximum separation efficiency of 85% is obtained at the optimum temperature of 38℃ and voltage of 3000 V.
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Key wordsdemulsification   oil/water   emulsion   electric field   dielectrophoresis     
Received: 2010-08-26; Published: 2011-09-24
Cite this article:   
HOSSEINI M.,SHAHAVI M. H.. Electrostatic Enhancement of Coalescence of Oil Droplets(in Nanometer Scale) in Water Emulsion[J]. Chin.J.Chem.Eng., 2012, 20(4): 654-658.
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1 Rao,J.,McClements,D.J.,"Food-grade microem.,nanoemulsions and emulsions:Fabrication from sucrose monopalmitate&lemon oil",Food Hydrocolloids,25(6),1413-1423(2011).
2 Solans,C.,Izquierdo,P.,Nolla,J.,Azemar,N.,Garcia-Celma,M.J., "Nano-emulsions",Colloid&Interface Science,10(34),102-110 (2005).
3 Qian,C.,McClements,D.J.,"Formation of nanoemulsions stabilized by model food-grade emulsifiers using high-pressure homogenization:Factors affecting particle size",Food Hydrocolloids,25(5),1000-1008(2011).
4 Tadros,T.,Izquierdo,P.,Esquena,J.,Solans,C.,"Formation and stability of nano-emulsions",Advances in Colloid and Interface Science,108,303-318(2004).
5 Chen,C.M.,Lu,C.H.,Chang,C.H.,Yang.,Y.M.,"Influence of pH on the stability of oil-in-water emulsions stabilized by a splittable surfactant",Colloids Surf.A,170,173-179(2000).
6 Zaki,N.N.,Abdel-Raouf,M.E.,Abdel-Azim.,A.A.,"Propylene oxide-ethylene oxide block copolymers as demulsifiers for water-in-oil emulsions Monatsh",Chem.Eng.,127,621-629(1996).
7 Zaki,N.N.,Abdel-Raouf,M.E.,Abdel-Azim.,A.A.,"Propylene oxide-ethylene oxide block copolymers as demulsifiers for water-in-oil emulsions Monatsh",Chem.Eng.,127,1239-1245(1996).
8 Demetriades,K.,Coupland,J.N.,McClements,D.J.,"Physical properties of whey protein stabilized emulsions as related to pH and NaCl",J.Food Sci.,62,342-347(1997).
9 Kim,Y.H.,Wasan,D.T.,Breen,P.J.,"A study of dynamic interfacial mechanisms for demulsification of water-in-oil emulsions",Colloids Surf.A,95,235-241(1995).
10 Mason,S.L.,May,K.,Hartland,S.,"Drop size and concentration profile determination in petroleum emulsion separation",Colloids Surf.A,96,85-92(1995).
11 Fang,C.S.,Chang,B.K.L,Lai,P.M.C.,Klaila,W.,"Microwave demulisification",Chem.Eng.Commun.,73,227-239(1988).
12 Fang,C.S.,Lai,P.M.C.,"Microwave heating and separation of water-in-oil emulsions",J.Microw.Power Electromagn.Energy,30,46-57(1995).
13 Sun,D.,Duan,X.,Li,W.,Zhou,D.,"Demulsification of water-in-oil emulsion by using porous glass membrane",J.Membr.Sci,146,65-72(1998).
14 Briscoe,B.J.,Luckham,P.F.,Jayarajah,J.N.,Akeju,T.,"Separation of emulsions using fibrous fabric",Colloids Surf.,163,151-164(2000).
15 Haifeng,C.,Ye,P.,"Polarization characteristic of droplet of water-in-oil emulsion in a high uniform electric field",J.Modelling, Simulation and Optimization,20,139-142(2008).
16 Hirato,T.,Koyama,K.,Tanaka,T.,Awakura,Y.,Majima,H.,"Demulisification of water-in-oil emulsion by an electrostatic coalescence method",Mater.Trans.JIM,32,257-263(1991).
17 Wang,S.S.,Lee,C.J.,"Demulsification of water-in-oil emulsions by use of a high voltage AC field",Sep.Sci.Technol.,29,159-170 (1994).
18 Tsuneki,I.,"Electrical demulsification of oil-in-water emulsion", Colloids Surf.,302,581-586(2007).
19 Beetge,J.H.,Horne,B.O.,"Chemical demulsifier development based on critical electric field measurements",SPE J.,13(3),346-353(2008).
20 Lu,G.,Lu,Q.H.,Li.,P.S.,"Break-down of liquid membrane emulsion under high electric field",J.Membr.Sci.,128,1-6(1997).
21 Eoe,J.S.,Ghadiri,M.,Sharif,O.A.,Williams,T.J.,"Electrost.enhancement of coalescence of water droplets in oil.A review of the current understanding",Chem.Eng.J.,84,173-192(2001).
22 Ichikawa,T.,"Electrical demulsification of oil-in-water emulsion", Colloids and Surfaces A,Physicochem.Eng.Aspects,302,581-586 (2007).
23 Alinezhad,K.,Hosseini,M.,Mowagharnegad,K.,Salehi,M.,"Exprimental and modeling approach to separation of water in crude oil emulsion under non-uniform electrical field",Korean J.Chem.Eng.,27(1),198-205(2010).
24 Ichikawa,T.,Itoh,K.,Yamamoto,S.,Sumita,M.,"Rapid demulsification of dense oil-in-water emulsion by low external electric field", Colloids and Surfaces A,Physicochem.Eng.Aspects,242,21-26 (2004).
25 Pohl,H.A.,"Some effects of non-uniform fields on dielectrics",J. Appl.Phys,29,1182-1188(1958).
26 Draxler,J.,Fluessige Membranen fuer die Abwasserreinigung, Dbv-Verlag,Graz(1992).
27 Flavio,H.,Morales,F.,Duart,J.,Samitier-Marti,J.,"Bacterial handling under the influence of non-uniform electric fields:dielectrophoretic and electrohydrodynamic effects",Anais Annals of the Brazilian Academy of Sciences,80(4),627-638(2008).
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