Interfacial Tension Measurements of the (H2O + CO2) System at Elevated Pressures and Temperatures

2010/05/24 by Apostolos Georgiadis, Geoffrey Maitland, Geoffrey C. Maitland +2 · 13 citations
Engineering · Environmental Science · #Phase Equilibria and Thermodynamics #Carbon Dioxide Capture Technologies #Atmospheric and Environmental Gas Dynamics

paper · doi:10.1021/je100198g

Abstract

Interfacial tension measurements are reported for the (H 2 O + CO 2 ) system at pressures of (1 to 60) MPa and temperatures of (298 to 374) K. The pendant drop method was implemented using a high-pressure apparatus consisting of a view cell, fitted with a high-pressure capillary tube for creating pendant H 2 O drops in the CO 2 bulk phase. The reported results have a relative standard deviation in most cases of less than 1.0 % and are in good agreement with literature values at low pressures. However, at higher pressures (up to 45 MPa), there is a significant scatter in the published data; the reasons for this are discussed. Measurements in the present work extend the pressure range of available data up to pressures of 60 MPa.

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