Solubility and Diffusivity of Acid Gases (CO2, N2O) in Aqueous Alkanolamine Solutions
TLDR
In this paper, the diffusivity of N2O and CO2 in aqueous alkanolamine solution was measured and correlated over a wide range of conditions, and a modified Stokes-Einstein relation was derived.Abstract:
Solubility and diffusivity of N2O and CO2 in water were determined as a function of temperature from the results published in the open literature, and new data were measured in the present work. The solubility of N2O in several aqueous alkanolamine (DEA, DIPA, DMMEA, and DIPA) solutions at various temperatures was measured and correlated over a wide range of conditions. For both the diffusivity of N2O and the alkanolamine in aqueous alkanolamine solutions a modified Stokes-Einstein relation was derived. With the aid also of the “N2O analogy” the diffusivity of CO2 in these solutions can be estimated.read more
Citations
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Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Standard partial molal properties of organic species
TL;DR: In this article, Tanger and Helgeson extended the HKF equations of state for the standard partial molal properties of ionic species at high pressures and temperatures to include inorganic gases, acids, and other neutral aqueous species.
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On the kinetics between co2 and alkanolamines both in aqueous and non-aqueous solutions. an overview
TL;DR: In this paper, an overview is presented of the mechanisms that have been proposed in literature and the kinetic data for the various reactions are critically evaluated, along with the applicability and restrictions are discussed along with perspectives.
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Absorption of carbon dioxide into aqueous piperazine: reaction kinetics, mass transfer and solubility
Sanjay Bishnoi,Gary T. Rochelle +1 more
TL;DR: In this paper, the absorption of carbon dioxide into aqueous solutions of piperazine in a wetted wall contactor was studied from 298 to in solutions of 0.6 and the apparent reaction rate is first order in both carbon dioxide and piperazines with a value of at 25°C.
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Review of CO2 absorption using chemical solvents in hollow fiber membrane contactors
Jingliang Li,Bing Hung Chen +1 more
TL;DR: In this paper, a hollow fiber membrane contactor is used to separate CO2 from a gas stream, which is a promising alternative to conventional techniques such as column absorption, and the major advantages of the membrane absorption are the larger interfacial area, better device-modularity and more operational flexibility.
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Influence of membrane wetting on CO2 capture in microporous hollow fiber membrane contactors
TL;DR: In this article, a theoretical model was developed by simulating CO 2 absorption in water under two extreme operating conditions of the non-wetted and wetted modes of operation.
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TL;DR: In this article, the authors investigated the kinetics of CO 2 absorption by caustic solutions and derived the reaction velocity constant between CO 2 and OH − ions for KOH, NaOH and LiOh solutions up to 2N at 20°C.