Viscosity of Aqueous Solutions of CO2 at High Pressures

Experimental viscosity measurements of aqueous solutions of CO2 along three isotherms at 273, 276, and 278 K for pressures up to 30 MPa are reported. The measurements have been carried out in a falling capillary viscometer and have an estimated uncertainty of + 1.5%. The experimental values were compared with the correlation proposed by Kanti et al. derived from Floryʹs theory. The equation is in poor agreement with the experimental values, but the equations of Kanti et al. and of Grunberg and Nissan with one adjustable parameter yield good agreement with the experimental data.