An Experimental Study of Liquid-Liquid Microflow Pattern Maps Accompanied with Mass Transfer

This paper presents the experimental results of liquid-liquid microflows in a coaxial microfluidic device with mass transfer. Three working systems were n-butanol ＋ phosphoric acid （PA） ＋ water, methyl isobutyl ketone （MIBK） ＋ PA ＋ water, 30% kerosene in tri-n-butylphosphate （TBP）＋ PA ＋ water. The d...

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Bibliographic Details
Published inChinese journal of chemical engineering Vol. 20; no. 1; pp. 18 - 26
Main Author 邵华伟 吕阳成 王凯 骆广生
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2012
Subjects
Chemical engineering
Droplets
flow pattern
Interphase
Kerosene
liquid-liquid system
Marangoni effect
Marangoni效应
Mass transfer
microflows
Microfluidics
传热传质
地图
实验
微流体装置
有机相
流模式
甲基异丁基酮
microflows
liquid-liquid system
mass transfer
flow pattern
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ISSN1004-9541
2210-321X
DOI10.1016/S1004-9541(12)60358-9

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Summary:This paper presents the experimental results of liquid-liquid microflows in a coaxial microfluidic device with mass transfer. Three working systems were n-butanol ＋ phosphoric acid （PA） ＋ water, methyl isobutyl ketone （MIBK） ＋ PA ＋ water, 30% kerosene in tri-n-butylphosphate （TBP）＋ PA ＋ water. The direction and intensity of mass transfer were adjusted by adding PA in one of two phases mutual saturated in advance. When PA transferred from the organic phase to the aqueous phase, tiny aqueous droplets may generate inside the organic phase by mass transfer inducement to form a new W/O/W flow pattern directly on some special cases. Once the PA concentration was very high, violent Marangoni effect could be observed to throw part of organic phase out of droplets as tail. The interphase transfer of PA could expand the jetting flow region, in particular for systems with low or medium interfacial tension and when the mass transfer direction was from the aqueous phase to the organic phase.
Bibliography:This paper presents the experimental results of liquid-liquid microflows in a coaxial microfluidic device with mass transfer. Three working systems were n-butanol ＋ phosphoric acid （PA） ＋ water, methyl isobutyl ketone （MIBK） ＋ PA ＋ water, 30% kerosene in tri-n-butylphosphate （TBP）＋ PA ＋ water. The direction and intensity of mass transfer were adjusted by adding PA in one of two phases mutual saturated in advance. When PA transferred from the organic phase to the aqueous phase, tiny aqueous droplets may generate inside the organic phase by mass transfer inducement to form a new W/O/W flow pattern directly on some special cases. Once the PA concentration was very high, violent Marangoni effect could be observed to throw part of organic phase out of droplets as tail. The interphase transfer of PA could expand the jetting flow region, in particular for systems with low or medium interfacial tension and when the mass transfer direction was from the aqueous phase to the organic phase.
mass transfer, flow pattern, liquid-liquid system, microflows
11-3270/TQ
SHAO Huawei , LU Yangcheng , WANG Kai LUO Guangsheng State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(12)60358-9