Density, viscosity, physical solubility and diffusivity of CO 2 in aqueous MDEA+bmimBF 4 solutions from 303 to 333K
Document Type
Article
Publication Date
1-1-2011
Abstract
In this study, the physical solubility and diffusivity of N 2O in aqueous MDEA+bmimBF 4 solutions were measured over a range of temperatures of 303-333K and bmimBF 4 concentrations of 0-2.0molL -1 at atmospheric pressure. The total MDEA concentration in the solutions was kept constant at 4molL -1. The " N 2O analogy" was then used to estimate the physical solubility and diffusivity of CO 2 in aqueous MDEA+bmimBF 4 solutions. The density and viscosity of aqueous MDEA+bmimBF 4 solutions were also measured over the same range of temperatures and concentrations of the ionic liquid. These data were used to develop correlations for the prediction of CO 2 diffusivity in these systems.
Keywords
Carbon dioxide, Diffusivity, Ionic liquids, MDEA, Physical solubility, bmimBF, Diffusivities, Atmospheric pressure, Diffusion, Solubility, Viscosity.
Divisions
fac_eng
Publication Title
Chemical Engineering Journal
Volume
172
Issue
2-3
Publisher
Elsevier
Additional Information
Cited By (since 1996):5 Export Date: 21 April 2013 Source: Scopus CODEN: CMEJA :doi 10.1016/j.cej.2011.06.059 Language of Original Document: English Correspondence Address: Ahmady, A.; Chemical Engineering Department, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; email: afshin.ahmady@gmail.com References: Kierzkowska-Pawlak, H., Chacuk, A., Kinetics of CO2 desorption from aqueous n-methyldiethanolamine solutions (2011) Chem. Eng. J., 168, pp. 367-437; Kohl, A.L., Nielsen, R.B., (1997) Gas Purification, , Gulf Publishing Company, Houston; Feng, Z., Cheng-Gang, F., You-Ting, W., Yuan-Tao, W., Ai-Min, L., Zhi-Bing, Z., Absorption of CO2 in the aqueous solutions of functionalized ILs and MDEA (2010) Chem. Eng. J., 160, pp. 691-697; Samanta, A., Bandyopadhyay, S.S., Absorption of carbon dioxide into piperazine activated aqueous n-methyldiethanolamine (2010) Chem. Eng. J.; Bishnoi, S., Rochelle, G.T., Absorption of carbon dioxide in aqueous piperazine/methyldiethanolamine (2002) AIChE J., 48, pp. 2788-2799; Hasib-ur-Rahman, M., Siaj, M., Larachi, F., Ionic liquids for CO2 capture-development and progress (2010) Chem. Eng. Process., 49, pp. 313-322; Blanchard, L.A., Hancu, D., Beckman, E.J., Green processing using ionic liquids and CO2 (1999) Nature, 399, pp. 28-29; Jacquemin, J., Gomes, M.F.C., Husson, P., Majer, V., Solubility of carbon dioxide, ethane, methane, oxygen, nitrogen, hydrogen, argon, and carbon monoxide in 1-butyl-3-methylimidazolium tetrafluoroborate between temperatures 283K and 343K and at pressures close to atmospheric (2006) J. Chem. Thermodyn., 38, pp. 490-502; Galán Sánchez, L.M., Meindersma, G.W., de Haan, A.B., Kinetics of absorption of CO2 in amino-functionalized ionic liquids (2011) Chem. Eng. J., 166, pp. 1104-1115; Bates, E.D., Mayton, R.D., Ntai, I., Davis, J.H., CO2 capture by a task-specific ionic liquid (2002) J. Am. Chem. Soc., 124, pp. 926-927; Camper, D., Bara, J.E., Gin, D.L., Noble, R.D., Room-temperature ionic liquid-amine solutions: tunable solvents for efficient and reversible capture of CO2 (2008) Ind. Eng. Chem. Res., 47, pp. 8496-8498; Chinn, D., Vu, D.Q., Driver, M.S., Boudreau, L.C., (2006), CO2 removal from gas using ionic liquid absorbents, US Patent 20,060,251,558Ahmady, A., Hashim, M.A., Aroua, M.K., Experimental investigation on the solubility and initial rate of absorption of CO2 in aqueous mixtures of methyldiethanolamine with the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (2010) J. Chem. Eng. Data, 55 (12), pp. 5733-5738; Wang, Y.T., Fang, C.G., Zhang, F., The performances of CO2 absorption in mixed aqueous solution of MDEA and amino acid ionic liquids (2009) CIESC J., 60, pp. 2781-2786; Freire, M.G., Neves, C.M.S.S., Marrucho, I.M., Coutinho, J.A.P., Fernandes, A.M., Hydrolysis of tetrafluoroborate and hexafluorophosphate counter ions in imidazolium-based ionic liquids (2010) J. Phys. Chem. A, 114, pp. 3744-3749; (1999) Encyclopedia of Chemical Technology, , John Wiley & Sons Inc. Kirk-Othmer; Kumar, P.S., Hogendoorn, J.A., Feron, P.H.M., Versteeg, G.F., Density, viscosity, solubility, and diffusivity of N2O in aqueous amino acid salt solutions (2001) J. Chem. Eng. Data, 46, pp. 1357-1361; Joosten, G.E.H., Danckwerts, P.V., Solubility and diffusivity of nitrous oxide in equimolar potassium carbonate-potassium bicarbonate solutions at 25°C and 1atm (1972) J. Chem. Eng. Data, 17, pp. 452-454; Laddha, S.S., Diaz, J.M., Danckwerts, P.V., The N2O analogy: the solubilities of CO2 and N2O in aqueous solutions of organic compounds (1981) Chem. Eng. Sci., 36, pp. 229-230; Samanta, A., Roy, S., Bandyopadhyay, S.S., Physical solubility and diffusivity of N2O and CO2 in aqueous solutions of piperazine and (n-methyldiethanolamine+piperazine) (2007) J. Chem. Eng. Data, 52, pp. 1381-1385; Camper, D., Becker, C., Koval, C., Noble, R., Diffusion and solubility measurements in room temperature ionic liquids (2006) Ind. Eng. Chem. Res., 45, pp. 445-450; Saha, A.K., Bandyopadhyay, S.S., Biswas, A.K., Solubility and diffusivity of N2O and CO2 in aqueous solutions of 2-amino-2-methyl-1-propanol (1993) J. Chem. Eng. Data, 38, pp. 78-82;