期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 214, 期 1-3, 页码 151-155出版社
ELSEVIER
DOI: 10.1016/S0927-7757(02)00385-0
关键词
gas flotation; oily wastewater; spreading; thin films
Gas flotation is widely used for oily wastewater cleanup. The crux for flotation is the adhesion of the gas bubble to the oil drop. A spreading stage of oil onto the gas is vital for efficient bubble-oil rise. Thus spreading and non-spreading oils will present different fluid configurations and stabilities for bubble rise and a positive oil on a water-gas interface spreading coefficient is needed for spreading to occur. This paper provides photographic evidence of the spreading of the oil around the gas bubble. The importance of a positive spreading coefficient of the oil around the gas bubble for gas flotation is clear. (C) 2002 Elsevier Science B.V. All rights reserved.
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