Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel

doi:10.1016/j.cjche.2021.04.030

中国化学工程学报 ›› 2021, Vol. 39 ›› Issue (11): 51-58.DOI: 10.1016/j.cjche.2021.04.030

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel

Zhuo Chen¹, Qiqiang Xiong¹, Shaowei Li², Yundong Wang¹, Jianhong Xu¹

1 The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
2 Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

收稿日期:2020-12-09 修回日期:2021-03-12 出版日期:2021-11-28 发布日期:2021-12-27
通讯作者: Yundong Wang, Jianhong Xu
基金资助:
The authors gratefully acknowledge the supports of the National Natural Science Foundation of China (21991100, 21991101) for this work.

Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel

Zhuo Chen¹, Qiqiang Xiong¹, Shaowei Li², Yundong Wang¹, Jianhong Xu¹

1 The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
2 Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Received:2020-12-09 Revised:2021-03-12 Online:2021-11-28 Published:2021-12-27
Contact: Yundong Wang, Jianhong Xu
Supported by:
The authors gratefully acknowledge the supports of the National Natural Science Foundation of China (21991100, 21991101) for this work.

摘要/Abstract

摘要： The mass transfer of Rhodamine 6G from the droplet to the continuous phase in a coaxial micro-channel is studied using micro-LIF (Laser-Induced Fluorescence). The mass distribution inside droplet is measured and visualized. The experimental results affirm that there exists the internal circulation inside the droplet and it could enhance the convective mass transfer. The stagnant center of vortices is also observed. The extraction fraction could reach 40%-80%. In order to establish the mass transfer model, different flow rates of the dispersed and continuous phase are adopted. The high continuous phase flow rate and low dispersed phase flow rate are both beneficial to enhance mass transfer by expediting the internal circulation. A modified mass transfer model is found to calculate the extraction fraction. A good agreement between the model and experiment in various conditions demonstrates that the mass transfer model in this work is reliable and feasible.

关键词: Droplet formation, Micro-LIF measurement, Internal circulation, Mass transfer model

Abstract: The mass transfer of Rhodamine 6G from the droplet to the continuous phase in a coaxial micro-channel is studied using micro-LIF (Laser-Induced Fluorescence). The mass distribution inside droplet is measured and visualized. The experimental results affirm that there exists the internal circulation inside the droplet and it could enhance the convective mass transfer. The stagnant center of vortices is also observed. The extraction fraction could reach 40%-80%. In order to establish the mass transfer model, different flow rates of the dispersed and continuous phase are adopted. The high continuous phase flow rate and low dispersed phase flow rate are both beneficial to enhance mass transfer by expediting the internal circulation. A modified mass transfer model is found to calculate the extraction fraction. A good agreement between the model and experiment in various conditions demonstrates that the mass transfer model in this work is reliable and feasible.

Key words: Droplet formation, Micro-LIF measurement, Internal circulation, Mass transfer model

Zhuo Chen, Qiqiang Xiong, Shaowei Li, Yundong Wang, Jianhong Xu. Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel[J]. 中国化学工程学报, 2021, 39(11): 51-58.

参考文献

[1] T.T. Han, L. Zhang, H. Xu, J. Xuan, Factory-on-chip:Modularised microfluidic reactors for continuous mass production of functional materials, Chem. Eng. J. 326(2017) 765-773.
[2] J.H. Xu, J. Tan, S.W. Li, G.S. Luo, Enhancement of mass transfer performance of liquid-liquid system by droplet flow in microchannels, Chem. Eng. J. 141(1-3) (2008) 242-249.
[3] W.B. Han, X.Y. Chen, Nano-electrokinetic ion enrichment in a micronanofluidic preconcentrator with nanochannel's Cantor fractal wall structure, Appl. Nanosci. 10(1) (2020) 95-105
[4] Z.M. Liu, J. Zhao, Y. Pang, X. Wang, Generation of droplets in the T-junction with a constriction microchannel, Microfluid. Nanofluidics 22(11) (2018) 1-9.
[5] Y. Liu, X. Jiang, Why microfluidics? Merits and trends in chemical synthesis, Lab Chip 17(23) (2017) 3960-3978.
[6] K. Wang, L. Li, P. Xie, G. Luo, Liquid-liquid microflow reaction engineering, React. Chem. Eng. 2(5) (2017) 611-627.
[7] G. Hu, L. Yang, Y. Li, L. Wang, Continuous and scalable fabrication of stable and biocompatible MOF@SiO₂ nanoparticles for drug loading, J. Mater. Chem. B 6(47) (2018) 7936-7942.
[8] Z. Wei, Y. Chen, P. Lin, Q.i. Yan, Y. Fan, Z. Cheng, Synthesis and encapsulation of all inorganic perovskite nanocrystals by microfluidics, J. Mater. Sci. 54(9) (2019) 6841-6852.
[9] T.Y. Lee, K. Han, D.O. Barrett, S. Park, S.A. Soper, M.C. Murphy, Accurate, predictable, repeatable micro-assembly technology for polymer, microfluidic modules, Sens. Actuators B Chem. 254(2018) 1249-1258.
[10] S. Watanabe, S. Ohsaki, A. Fukuta, T. Hanafusa, K. Takada, H. Tanaka, T. Maki, K. Mae, M.T. Miyahara, Characterization of mixing performance in a microreactor and its application to the synthesis of porous coordination polymer particles, Adv. Powder Technol. 28(11) (2017) 3104-3110.
[11] B. Hu, J. Li, L. Mou, Y. Liu, J. Deng, W. Qian, J. Sun, R. Cha, X. Jiang, An automated and portable microfluidic chemiluminescence immunoassay for quantitative detection of biomarkers, Lab Chip 17(13) (2017) 2225-2234.
[12] M.A. Qasaimeh, Y.C. Wu, S. Bose, A. Menachery, S. Talluri, G. Gonzalez, M. Fulciniti, J.M. Karp, R.H. Prabhala, R. Karnik, Isolation of circulating plasma cells in multiple myeloma using CD138 antibody-based capture in a microfluidic device, Sci. Rep. 7(2017) 45681.
[13] S. Rawal, Y.-P. Yang, R. Cote, A. Agarwal, Identification and quantitation of circulating tumor cells, Annual Rev. Anal. Chem. 10(1) (2017) 321-343.
[14] M. Yew, Y. Ren, K.S. Koh, C.G. Sun, C. Snape, A review of state-of-the-art microfluidic technologies for environmental applications:Detection and remediation, Glob. Chall. 3(1) (2019) 1800060.
[15] C. Priest, J. Zhou, R. Sedev, J. Ralston, A. Aota, K. Mawatari, T. Kitamori, Microfluidic extraction of copper from particle-laden solutions, Int. J. Miner. Process. 98(3-4) (2011) 168-173.
[16] L. Zhang, V. Hessel, J. Peng, Liquid-liquid extraction for the separation of Co(II) from Ni(II) with Cyanex 272 using a pilot scale Re-entrance flow microreactor, Chem. Eng. J. 332(2018) 131-139.
[17] W.G. Whitman, L. Long, H.Y. Wang, Absorption of gases by a liquid drop, Ind. Eng. Chem. 18(4) (1926) 363-367.
[18] A.T. Popovich, R.E. Jervis, O. Trass, Mass transfer during single drop formation, Chem. Eng. Sci. 19(5) (1964) 357-365.
[19] Z. Wang, P. Lu, Y. Wang, C. Yang, Z.-S. Mao, Experimental investigation and numerical simulation of Marangoni effect induced by mass transfer during drop formation, AIChE J. 59(11) (2013) 4424-4439.
[20] P. Lu, Z. Wang, C. Yang, Z.-S. Mao, Experimental investigation and numerical simulation of mass transfer during drop formation, Chem. Eng. Sci. 65(20) (2010) 5517-5526.
[21] A.H.P. Skelland, C.L. Caenepeel, Effects of surface active agents on mass transfer during droplet formation, fall, and coalescence, AIChE J. 18(6) (1972) 1154-1163.
[22] M. Wegener, A.R. Paschedag, Mass transfer enhancement at deformable droplets due to Marangoni convection, Int. J. Multiph. Flow 37(1) (2011) 76-83.
[23] M. Wegener, A.R. Paschedag, M. Kraume, Mass transfer enhancement through Marangoni instabilities during single drop formation, Int. J. Heat Mass Transf. 52(11-12) (2009) 2673-2677.
[24] D.S. Walia, D. Vir, Interphase mass transfer during drop or bubble formation, Chem. Eng. Sci. 31(7) (1976) 525-533.
[25] Y.-L. Lee, Surfactants effects on mass transfer during drop-formation and drop falling stages, AIChE J. 49(7) (2003) 1859-1869.
[26] W.B. Han, X.Y. Chen, Z.L. Hu, K. Yang, Three-dimensional numerical simulation of a droplet generation in a double T-junction microchannel, 17(2) (2018) 025502.
[27] O. Carrier, F.G. Ergin, H.-Z. Li, B.B. Watz, D. Funfschilling, Time-resolved mixing and flow-field measurements during droplet formation in a flow-focusing junction, J. Micromech. Microeng. 25(8) (2015) 084014.
[28] A. Gupta, M. Sbragaglia, D. Belardinelli, K. Sugiyama, Lattice Boltzmann simulations of droplet formation in confined channels with thermocapillary flows, Phys. Rev. E 94(6) (2016) 063302.
[29] W. Lan, S. Li, Y. Wang, G. Luo, CFD simulation of droplet formation in microchannels by a modified level set method, Ind. Eng. Chem. Res. 53(12) (2014) 4913-4921.
[30] J. Liu, Y.F. Yap, N.-T. Nguyen, Numerical study of the formation process of ferrofluid droplets, Phys. Fluids 23(7) (2011) 072008, https://doi.org/10.1063/1.3614569.
[31] H. Shahin, S. Mortazavi, Three-dimensional simulation of microdroplet formation in a co-flowing immiscible fluid system using front tracking method, J. Mol. Liq. 243(2017) 737-749.
[32] V.-L. Wong, K. Loizou, P.-L. Lau, R.S. Graham, B.N. Hewakandamby, Numerical studies of shear-thinning droplet formation in a microfluidic T-junction using two-phase level-SET method, Chem. Eng. Sci. 174(2017) 157-173.
[33] X.i. Wang, G. Liu, K. Wang, G. Luo, Measurement of internal flow field during droplet formation process accompanied with mass transfer, Microfluid. Nanofluidics 19(3) (2015) 757-766.
[34] G. Liu, X.i. Wang, K. Wang, C.P. Tostado, G. Luo, Effect of surface wettability on internal velocity profile during droplet formation process in microfluidic devices, Int. J. Multiph. Flow 80(2016) 188-193.
[35] Q.-Q. Xiong, Z. Chen, S.-W. Li, Y.-D. Wang, J.-H. Xu, Micro-PIV measurement and CFD simulation of flow field and swirling strength during droplet formation process in a coaxial microchannel, Chem. Eng. Sci. 185(2018) 157-167.
[36] A. Azimian Fereydani, Z. Azizi, Experimental study of extraction fraction and mass transfer coefficient in a microchannel using butyl acetate/acetic acid/water chemical system, J. Therm. Anal. Calorim. 133(2) (2018) 945-950.
[37] M. N. Kashid, A. Renken, L. Kiwi-Minsker, Influence of flow regime on mass transfer in different types of microchannels, Ind. Eng. Chem. Res. 50(11) (2011) 6906-6914.
[38] M.B. Nemer, C.C. Roberts, L.G. Hughes, N.B. Wyatt, C.F. Brooks, R. Rao, Drop mass transfer in a microfluidic chip compared to a centrifugal contactor, AIChE J. 60(8) (2014) 3071-3078.
[39] M. Sattari-Najafabadi, M. Nasr Esfahany, Z. Wu, B. Sunden, Mass transfer between phases in microchannels:A review, Chem. Eng. Process.-Process Intensification 127(2018) 213-237.
[40] J. Tang, X. Zhang, W. Cai, F. Wang, Liquid-liquid extraction based on droplet flow in a vertical microchannel, Exp. Therm. Fluid Sci. 49(2013) 185-192.
[41] H. Zhang, H. Wang, X. Luo, D.Y.C. Leung, Q. Pang, H. Xu, L.i. Zhang, J. Xuan, Toward a mechanistic understanding of microfluidic droplet-based extraction and separation of lanthanides, Chem. Eng. J. 356(2019) 673-679.
[42] Y. Zhao, G. Chen, Q. Yuan, Liquid-liquid two-phase mass transfer in the Tjunction microchannels, AIChE J. 53(12) (2007) 3042-3053.
[43] D. Das, S. Duraiswamy, Z. Yi, V. Chan, C. Yang, Continuous droplet-based liquid-liquid extraction of phenol from oil, Sep. Sci. Technol. 50(7) (2015) 1023-1029.
[44] P. Mary, V. Studer, P. Tabeling, Microfluidic droplet-based liquid-liquid extraction, Anal. Chem. 80(8) (2008) 2680-2687.
[45] L. Bai, S. Zhao, Y. Fu, Y.i. Cheng, Experimental study of mass transfer in water/ionic liquid microdroplet systems using micro-LIF technique, Chem. Eng. J. 298(2016) 281-290.
[46] Q.i. Li, P. Angeli, Intensified Eu(III) extraction using ionic liquids in small channels, Chem. Eng. Sci. 143(2016) 276-286.
[47] L. Burkhart, P.W. Weathers, P.C. Sharer, Mass transfer and internal circulation in forming drops, AIChE J. 22(6) (1976) 1090-1096.
[48] G.F. Scheele, B.J. Meister, Drop formation at low velocities in liquid-liquid systems:Part I. Prediction of drop volume, AIChE J. 14(1) (1968) 9-15.
[49] A.H.P. Skelland, S.S. Minhas, Dispersed phase mass transfer during drop formation and coalescence in liquid-liquid extraction, AIChE J. 17(6) (1971) 1316-1324.
[50] D.S. Walia, D. Vir, Extraction from single forming drops, Chem. Eng. J. 12(2) (1976) 133-141.
[51] A. Newman, The drying of porous solids diffusion and surface emission equations, AIChE J. 27(1931) 203-220.
[52] R. Kronig, J.C. Brink, On the theory of extraction from falling droplets, Appl. Sci. Res. 2(1) (1951) 142-154.
[53] P.H. Calderbank, I.J.O. Korchinski, Circulation in liquid drops:(A heat-transfer study), Chem. Eng. Sci. 6(2) (1956) 65-78.
[54] A.E. Handlos, T. Baron, Mass and heat transfer from drops in liquid-liquid extraction, AIChE J. 3(1) (1957) 127-136.
[55] M. Henschke, A. Pfennig, Mass-transfer enhancement in single-drop extraction experiments, AIChE J. 45(10) (1999) 2079-2086.
[56] J.B. Angelo, E.N. Lightfoot, D.W. Howard, Generalization of the penetration theory for surface stretch:Application to forming and oscillating drops, AIChE J. 12(4) (1966) 751-760.
[57] W.J. Heideger, M.W. Wright, Liquid extraction during drop formation:Effect of formation time, AIChE J. 32(8) (1986) 1372-1376.
[58] B. Jajuee, A. Margaritis, D. Karamanev, M.A. Bergougnou, Application of surface-renewal-stretch model for interface mass transfer, Chem. Eng. Sci. 61(12) (2006) 3917-3929.
[59] T.B. Liang, M.J. Slater, Liquid-liquid extraction drop formation:mass transfer and the influence of surfactant, Chem. Eng. Sci. 45(1) (1990) 97-105.
[60] A. Kumar, S. Hartland, Correlations for prediction of mass transfer coefficients in single drop systems and liquid-liquid extraction columns, Chem. Eng. Res. Des. 77(5) (1999) 372-384.
[61] S. Mitra, M.J. Sathe, E. Doroodchi, R. Utikar, M.K. Shah, V. Pareek, J.B. Joshi, G.M. Evans, Droplet impact dynamics on a spherical particle, Chem. Eng. Sci. 100(2013) 105-119.
[62] A. Javadi, D. Bastani, J. Krägel, R. Miller, Interfacial instability of growing drop:Experimental study and conceptual analysis, Colloids Surf. A:Physicochem. Eng. Aspects 347(1-3) (2009) 167-174.
[63] A. Javadi, D. Bastani, M. Taeibi-Rahni, Mass transfer during drop formation on the nozzle:New flow expansion model, AIChE J. 52(3) (2006) 895-910.
[64] R. Kronig, B. Van Der Veen, M.P. Ijzerman, On the theory of extraction from falling droplets II, Appl. Sci. Res. Sect. A 3(2) (1951) 103-110.
[65] P. Grassia, S. Ubal, Streamline-averaged mass transfer in a circulating drop, Chem. Eng. Sci. 190(2018) 190-219.

Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel

Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel

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