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240915s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.4c02486
|2 doi
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|a pubmed25n1257.xml
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|a (NLM)39276096
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Li, Han
|e verfasserin
|4 aut
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|a Probing the Interfacial Interaction Mechanisms of Nitrogen with Dodecane/Toluene
|b Implications for Foam Flooding
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 14.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Interfacial interactions between deformable bubbles and oil drops have attracted much attention in foam flooding. However, interactions involving nitrogen bubbles have not been reported. In this work, the interaction forces between nitrogen and dodecane/toluene in aqueous solutions were quantified using the atomic force microscopy bubble probe technique. The effects of the solution pH, ionic type, and solution concentration on the interactions were analyzed. The van der Waals (vdW), electric double layer (EDL), and hydrophobic (HB) interactions were involved in the low-concentration solutions. The EDL repulsion in NaCl increased with solution pH, while in CaCl2 and MgCl2, the EDL repulsion in general decreased and then increased with pH, attributed to the adsorption of OH- and divalent cations and their hydration products. The adsorption of divalent cations at the toluene/water interface was pronounced by cation-π interactions. At pH 10, precipitated divalent cation hydroxides at the bubble/water and oil/water interfaces adsorbed more cations, causing the increase of the surface potential. At high salinity, the EDL interaction was suppressed and the vdW repulsion became predominant. The vdW force of nitrogen with toluene was stronger than that with dodecane. Under all of the solution conditions, the attractive interaction could not overcome the total repulsive interaction at the minimum separation, and thus no bubble attachment was observed, which implied that a stable bubble/liquid/oil film was essential for maintaining foam stability. This work provides useful insights into the interfacial interaction mechanisms in nitrogen foam flooding. The findings can be readily extended to other engineering systems such as oil flotation and bubble-oil-water emulsions
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|a Journal Article
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|a Peng, Ting
|e verfasserin
|4 aut
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|a Wang, Jingyi
|e verfasserin
|4 aut
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|a Zhang, Kuanjun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Dianlin
|e verfasserin
|4 aut
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| 700 |
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|a Xie, Lei
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g (2024) vom: 14. Sept.
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g year:2024
|g day:14
|g month:09
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|u http://dx.doi.org/10.1021/acs.langmuir.4c02486
|3 Volltext
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