Experimental and Theoretical Studies of CO2 Absorption Enhancement by Nano-Al2O3 and Carbon Nanotube Particles

doi:10.1016/S1004-9541(13)60550-9

Abstract

Abstract: The influence of nano-particles on CO₂ absorption was studied experimentally in a stirred thermostatic reactor. Nano-Al₂O₃ and carbon nanotube (CNT) particles which showed different hydrophobic properties were chosen for the investigation. The experimental results were compared with that of micron-size activated carbon (AC) and Al₂O₃ particles. From the results, no enhancement by micron-size Al₂O₃ was found, and with the increase of Al₂O₃ concentration, the enhancement factor decreased. However, nano-Al₂O₃ showed a weak enhancement for the CO₂ absorption. AC and CNT particles all intensified the gas-liquid mass transfer effectively, yet the trend of the enhancement factor with stirring speed for the two particles was different. With increasing stirring speed, the enhancement factor of AC particles was decreased, whereas in CNT suspensions it was increased. The experimental phenomena demonstrated a difference in enhancement mechanism for different size particles. For nano-particles, besides the influence of adsorbability and hydrophobicity, the micro-convection caused by Brownian motion should be also taken into account. Considering the micro-convection effect, a theoretical model was developed to shed light on the absorption enhancement by nano-particles.

Key words: absorption enhancement, nano-particles, enhancement factor, Brownian motion

摘要： The influence of nano-particles on CO₂ absorption was studied experimentally in a stirred thermostatic reactor. Nano-Al₂O₃ and carbon nanotube (CNT) particles which showed different hydrophobic properties were chosen for the investigation. The experimental results were compared with that of micron-size activated carbon (AC) and Al₂O₃ particles. From the results, no enhancement by micron-size Al₂O₃ was found, and with the increase of Al₂O₃ concentration, the enhancement factor decreased. However, nano-Al₂O₃ showed a weak enhancement for the CO₂ absorption. AC and CNT particles all intensified the gas-liquid mass transfer effectively, yet the trend of the enhancement factor with stirring speed for the two particles was different. With increasing stirring speed, the enhancement factor of AC particles was decreased, whereas in CNT suspensions it was increased. The experimental phenomena demonstrated a difference in enhancement mechanism for different size particles. For nano-particles, besides the influence of adsorbability and hydrophobicity, the micro-convection caused by Brownian motion should be also taken into account. Considering the micro-convection effect, a theoretical model was developed to shed light on the absorption enhancement by nano-particles.

关键词: absorption enhancement, nano-particles, enhancement factor, Brownian motion

LU Sumin, XING Min, SUN Yan, DONG Xiangjun. Experimental and Theoretical Studies of CO₂ Absorption Enhancement by Nano-Al₂O₃ and Carbon Nanotube Particles[J]. Chin.J.Chem.Eng., 2013, 21(9): 983-990.

卢素敏, 邢敏, 孙燕, 董相均. Experimental and Theoretical Studies of CO₂ Absorption Enhancement by Nano-Al₂O₃ and Carbon Nanotube Particles[J]. Chinese Journal of Chemical Engineering, 2013, 21(9): 983-990.

References

1 Dagaonkar, M.V., Heeres, H.J., Beenackers, A.A.C.M., Pangarkar, V.G., “The application of fine TiO₂ particles for enhanced gas absorption”, Chem. Eng. J., 92 (1-3), 151-159 (2003).

2 Ruthiya, K.C., van der Schaaf, J., Kuster, B.F.M., Schouten, J.C., “Mechanisms of physical and reaction enhancement of mass transfer in a gas inducing stirred slurry reactor”, Chem. Eng. J., 96 (1-3), 55-69 (2003).

3 Demmink, J.F., Mehra, A., Beenackers, A.A.C.M., “Gas absorption in the presence of particles showing interfacial affinity: case of fine sulfur precipitates”, Chem. Eng. Sci., 53 (16), 2885-2902 (1998).

4 Kaya, A., Schumpe, A., “Surfactant adsorption rather than ‘shuttle effect’ ?”, Chem. Eng. Sci., 60 (22), 6504-6510 (2005).

5 Shen, S.H, Ma, Y.G., Lu, S.M., Zhu, C.Y., “An unsteady heterogeneous mass transfer model for gas absorption enhanced by dispersed third phase droplets”, Chin. J. Chem. Eng., 17 (4), 602-607 (2009).

6 Rols, J.L., Condoret, J.S., Fonade, C., Goma, G., “Mechanism of enhanced oxygen transfer in fermentation using emulsified oxygen-vectors”, Biotechnol. Bioeng., 35 (4), 427-435 (1990).

7 Nagy, E., Moser, A., “Three-phase mass transfer: Improved pseudo-homogeneous model”, AIChE J., 41 (1), 23-34 (1995).

8 Brilman, D.W.F., Goldschmidt, M.J.V., Versteeg, G.F., van Swaaij, W.P.M., “Heterogeneous mass transfer models for gas absorption in multiphase systems”, Chem. Eng. Sci., 55 (15), 2793-2812 (2000).

9 Ahn, H.S., Kim, H., Jo, H.J., Kang, S.H., Chang, W.P., Kim, M.H., “Experimental study of critical heat flux enhancement during forced convective flow boiling of nanofluid on a short heated surface”, Int. J. Multiphase Flow, 36 (5), 375-384 (2010).

10 Kumar, S., Prasad, S.K., Banerjee, J., “Analysis of flow and thermal field in nanofluid using a single phase thermal dispersion model”, Appl. Math. Model., 34 (3), 573-592 (2010).

11 Li, J., Kleinstreuer, C., “Thermal performance of nanofluid flow in microchannels”, Int. J. Heat Fluid Flow, 29 (4), 1221-1232 (2008).

12 Santra, A.K., Sen, S., Chakraborty, N., “Study of heat transfer due to laminar flow of copper-water nanofluid through two isothermally heated parallel plates”, Int. J. Therm. Sci., 48 (2), 391-400 (2009).

13 Noie, S.H., Zeinal, H.S., Kahani, M., Nowee, S.M., “Heat transfer enhancement using Al₂O₃/water nanofluid in a two-phase closed thermosyphon”, Int. J. Heat Fluid Flow, 30 (4), 700-705 (2009).

14 Krishnamurthy, S., Bhattacharya, P., Phelan, P.E., Prasher, R.S., “Enhanced mass transport in nanofluids”, Nano Lett., 6 (3), 419-423 (2006).

15 Kim, J.K., Jung, J.Y., Kang, Y.T., “The effect of nano-particles on the bubble absorption performanc in a binary nanofluid”, Int. J. Refrig., 29 (1), 22-29 (2006).

16 Kim, J.K., Jung, J.Y., Kang, Y.T., “Mass transfer enhancement of a binary nanofluid for absorption application”, In: The 13th International Heat Conference, Australia, NAN-017 (2006).

17 Olle, B., Bucak, S., Holmes, T.C., Bromberg, L., Hatton, A., Wang, D.I.C., “Enhancement of oxygen mass transfer using functionalized magnetic nanoparticles”, Ind. Eng. Chem. Res., 45 (12), 4355-4363 (2006).

18 Kim, J.K., Jung, J.Y., Kang, Y.T., “Absorption performance enhancement by nanoparticles and chemical sufactants in binary nanofluids”, Int. J. Refrig., 30 (1), 50-57 (2007).

19 Nagy, E., Feczkó, T., Koroknai, B., “Enhancement of oxygen mass transfer rate in the presence of nanosized particles”, Chem. Eng. Sci., 62 (24), 7391-7398 (2007).

20 Prasher, R., Phelan, P.E., Bhattacharya, P., “Effect of aggregation kinetics on the thermal conductivity of nanoscale colloidal solutions (nanofluid)”, Nanoletters, 6 (7), 1529-1534 (2006a).

21 Prasher, R., Bhattacharya, P., Phelan, P.E., “Brownian-motion-based convective-conductive model for the effective thermal conductivity of nanofluids”, Trans. ASME J. Heat Transfer, 128 (6), 588-595 (2006).

22 Lu, S.M., Ma, Y.G., Zhu, C.Y., Shen, S.H., “The enhancement of CO₂ chemical absorption by K₂CO₃ aqueous solution in the presence of activated carbon particles”, Chin. J. Chem. Eng., 15 (6), 842-846 (2007).

23 Vinke, H, Hamersma, P.J, Fortuin, J.M.H., “Enhancement of the gas-absorption rate in agitated slurry reactors by gas-adsorbing particles adhering to gas bubbles”, Chem. Eng. Sci., 48 (12), 2197-2210 (1993).

24 Zhang, D., “Study on mechanism and model of gas-liquid mass transfer enhancement by dispersed particles”, Ph.D. Thesis, Tianjin University, China (2006). (in Chinese)

25 Wimmers, O.J., Fortuin, J.M.H., “The use of adhesion of catalyst particles to gas bubbles to achieve enhancement of gas absorption in slurry reactors. II. Determination of the enhancement in a bubbles containing slurry reactor”, Chem. Eng. Sci., 43 (2), 313-319 (1988).

26 Nagy, E., Hadik, P., “Three-phase mass transfer: Effect of the size distribution”, Ind. Eng. Chem. Res., 42 (21), 5363-5372 (2003).

27 Shen, S.H., Ma, Y.G., Zhu, C.Y., Lu, S.M., “Absorption enhancement of carbon dioxide in aqueous activated carbon slurries”, CIESC J., 58 (4), 835-841 (2007). (in Chinese)

[1]	Xiaoping Li, Jiaxin Pan, Jinwen Shi, Yanlin Chai, Songwei Hu, Qiaorong Han, Yanming Zhang, Xianwen Li, Dengwei Jing. Nanoparticle-induced drag reduction for polyacrylamide in turbulent flow with high Reynolds numbers [J]. Chinese Journal of Chemical Engineering, 2023, 56(4): 290-298.
[2]	Xuanyu Nie, Chunying Zhu, Taotao Fu, Youguang Ma. Mass transfer intensification and mechanism analysis of gas–liquid two-phase flow in the microchannel embedding triangular obstacles [J]. Chinese Journal of Chemical Engineering, 2022, 51(11): 100-108.
[3]	R. Chandra Sekhar Reddy, P. Sudarsana Reddy. A comparative analysis of unsteady and steady Buongiorno's Williamson nanoliquid flow over a wedge with slip effects [J]. Chinese Journal of Chemical Engineering, 2020, 28(7): 1767-1777.
[4]	Pongjet Promvonge, Sompol Skullong. Enhanced heat transfer in rectangular duct with punched winglets [J]. Chinese Journal of Chemical Engineering, 2020, 28(3): 660-671.
[5]	Abbas Hemmati, Hamed Rashidi. Mass transfer investigation and operational sensitivity analysis of aminebased industrial CO₂ capture plant [J]. Chin.J.Chem.Eng., 2019, 27(3): 534-543.
[6]	Meisam Torab-Mostaedi, Mehdi Asadollahzadeh, Jaber Safdari. Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity [J]. , 2017, 25(3): 288-293.
[7]	Suriya Chokphoemphun, Monsak Pimsarn, Chinaruk Thianpong, Pongjet Promvonge. Heat transfer augmentation in a circular tube with winglet vortex generators [J]. Chin.J.Chem.Eng., 2015, 23(4): 605-614.
[8]	T. Sankarshana, E. Yadagiri, J. S. N. Murthy. Phase Transfer Catalysis: Oxidation of 2-Methyl-1-butanol [J]. , 2014, 22(9): 1000-1004.
[9]	CAI Wangfeng, ZHANG Jiao, ZHANG Xubin, WANG Yan, QI Xiangjuan. Enhancement of CO₂ Absorption under Taylor Flow in the Presence of Fine Particles [J]. Chin.J.Chem.Eng., 2013, 21(2): 135-143.
[10]	ZHANG Zhigang, XU Tianxing, LI Wenxiu, JI Zhiling, XU Guangrong. Mass Transfer Enhancement of Gas Absorption by Adding the Dispersed Organic Phases [J]. , 2011, 19(6): 1066-1068.
[11]	SHEN Shuhua, MA Youguang, LIU Weili, LU Sumin, ZHU Chunying. Mass Transfer Enhancement of Propane Absorption into Dodecane-Water Emulsions [J]. , 2010, 18(2): 217-222.
[12]	SHEN Shuhua, MA Youguang, LU Sumin, ZHU Chunying. An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets [J]. , 2009, 17(4): 602-607.
[13]	LU Sumin, MA Youguang, ZHU Chunying, SHEN Shuhua. The enhancement of CO₂ chemical absorption by K₂CO₃ aqueous solution in the presence of activated carbon particles [J]. , 2007, 15(6): 842-846.
[14]	CHENG Jiang, YANG Zhuoru, CHEN Huanqin, C.H.Kuo, M.E.Zappi. Enhancement Factors in Ozone Absorption Based on the Surface Renewal Model and its Application [J]. , 2000, 8(3): 236-240.

Experimental and Theoretical Studies of CO₂ Absorption Enhancement by Nano-Al₂O₃ and Carbon Nanotube Particles

Experimental and Theoretical Studies of CO₂ Absorption Enhancement by Nano-Al₂O₃ and Carbon Nanotube Particles

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 14

Recommended Articles

Metrics

Comments