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Collection of hydrophilic and hydrophobic charged submicron particles by charged water droplets |
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| Authors: | H C Wang K H Leong J J Stukel P K Hopke |
| Affiliation: | * Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, U.S.A. ? Institute for Environmental Studies, University of Illinois at Urbana-Champaign, Urbana, IL 61801, U.S.A. ? Department of Mechanical Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, U.S.A. |
| Abstract: | An experimental system capable of measuring the collection efficiency of charged submicron particles by charged water droplets is described. Collection efficiencies are measured for both hydrophilic and hydrophobic particles to clarify the effect of wettability on collection. Excellent agreement with the theory is obtained for hydrophilic submicron particles when the Coulombic force is dominant. No significant difference in collection efficiencies between hydrophilic and hydrophobic particles is observed. It is concluded that the wettability of submicron particles has no effect on its collection by water drops when Coulombic attraction is the dominant mechanism. |
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