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Measurements and correlation of physical solubility of carbon dioxide in (Monoethanolamine + Water) by a modified technique / Ying Jiru in Industrial & engineering chemistry research, Vol. 51 N° 19 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 19 (Mai 2012) . - pp. 6958–6966 Titre : Measurements and correlation of physical solubility of carbon dioxide in (Monoethanolamine + Water) by a modified technique Type de document : texte imprimé Auteurs : Ying Jiru, Auteur ; Dag A. Eimer, Auteur ; Yi Wenjuan, Auteur Année de publication : 2012 Article en page(s) : pp. 6958–6966 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Physical  solubility  Carbon  Dioxide Résumé : A modified experimental technique for measuring the physical solubility of CO2 in monoethanolamine (MEA) aqueous solutions using the “N2O analogy” method is proposed in this work. The modified technique employs a scaled spiral glass tube with a small drop of mercury as a eudiometer as an alternative to a three-branch U-tube setup to keep the system pressure constant and measure the volume of a drop of absorbed gas at constant temperature. The results were in good agreement with literature values, suggesting that the technique is feasible and reliable. Compared with the three-branch U-tube setup, the new technique is easy to operate and more sensitive and accurate. The physical solubility of CO2 in aqueous MEA solutions over the full range of concentrations was measured using this modified technique over the temperature range from 298.15 to 323.15 K under a constant ambient pressure. Wang et al.’s model ( Chem. Eng. J. 1992, 48, 31−40) was used to correlate the data, and the results showed that the model is good for predicting the behavior of the (monoethanolamine + water) system. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3002588 [article] Measurements and correlation of physical solubility of carbon dioxide in (Monoethanolamine + Water) by a modified technique [texte imprimé] / Ying Jiru, Auteur ; Dag A. Eimer, Auteur ; Yi Wenjuan, Auteur . - 2012 . - pp. 6958–6966. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 19 (Mai 2012) . - pp. 6958–6966 Mots-clés : Physical  solubility  Carbon  Dioxide Résumé : A modified experimental technique for measuring the physical solubility of CO2 in monoethanolamine (MEA) aqueous solutions using the “N2O analogy” method is proposed in this work. The modified technique employs a scaled spiral glass tube with a small drop of mercury as a eudiometer as an alternative to a three-branch U-tube setup to keep the system pressure constant and measure the volume of a drop of absorbed gas at constant temperature. The results were in good agreement with literature values, suggesting that the technique is feasible and reliable. Compared with the three-branch U-tube setup, the new technique is easy to operate and more sensitive and accurate. The physical solubility of CO2 in aqueous MEA solutions over the full range of concentrations was measured using this modified technique over the temperature range from 298.15 to 323.15 K under a constant ambient pressure. Wang et al.’s model ( Chem. Eng. J. 1992, 48, 31−40) was used to correlate the data, and the results showed that the model is good for predicting the behavior of the (monoethanolamine + water) system. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3002588

Measurements and correlations of diffusivities of nitrous oxide and carbon dioxide in monoethanolamine + water by laminar liquid jet / Jiru Ying in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16517-16524 Titre : Measurements and correlations of diffusivities of nitrous oxide and carbon dioxide in monoethanolamine + water by laminar liquid jet Type de document : texte imprimé Auteurs : Jiru Ying, Auteur ; Dag A. Eimer, Auteur Année de publication : 2013 Article en page(s) : pp. 16517-16524 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Liquid  jet  Carbon  dioxide  Diffusion  coefficien  Correlation  analysis  Correlation Résumé : The molecular diffusivities of nitrous oxide (N2O) with aqueous monoethanolamine (MEA) solutions up to 12 M were studied over a temperature range from 298.15 to 333.15 K under atmospheric pressure using a laminar liquid jet absorber. The diffusivities of CO2 in aqueous MEA solutions were calculated by the "N2O analogy" method. A simple and effective thermal control technique was used to control the temperatures of gas and liquid in the laminar liquid jet absorber. The rates of absorption were determined by measuring the flow of gas needed to replace the gas absorbed. The results showed that the diffusivities of both N2O and CO2 into aqueous MEA solution decrease with the increase of the concentration of MEA, and increase with an increase of the temperature of the solution. The relationship between the diffusivity and the viscosity of the solution roughly agrees with the modified Stokes-Einstein equation, but an exponent mathematical model was employed to simulate the diffusivity data and shows a better agreement between data and model for the diffusivity of N2O and CO2 in the monoethanolamine + water system. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732180 [article] Measurements and correlations of diffusivities of nitrous oxide and carbon dioxide in monoethanolamine + water by laminar liquid jet [texte imprimé] / Jiru Ying, Auteur ; Dag A. Eimer, Auteur . - 2013 . - pp. 16517-16524. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16517-16524 Mots-clés : Liquid  jet  Carbon  dioxide  Diffusion  coefficien  Correlation  analysis  Correlation Résumé : The molecular diffusivities of nitrous oxide (N2O) with aqueous monoethanolamine (MEA) solutions up to 12 M were studied over a temperature range from 298.15 to 333.15 K under atmospheric pressure using a laminar liquid jet absorber. The diffusivities of CO2 in aqueous MEA solutions were calculated by the "N2O analogy" method. A simple and effective thermal control technique was used to control the temperatures of gas and liquid in the laminar liquid jet absorber. The rates of absorption were determined by measuring the flow of gas needed to replace the gas absorbed. The results showed that the diffusivities of both N2O and CO2 into aqueous MEA solution decrease with the increase of the concentration of MEA, and increase with an increase of the temperature of the solution. The relationship between the diffusivity and the viscosity of the solution roughly agrees with the modified Stokes-Einstein equation, but an exponent mathematical model was employed to simulate the diffusivity data and shows a better agreement between data and model for the diffusivity of N2O and CO2 in the monoethanolamine + water system. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732180