Solubility of carbon dioxide, methane, and ethane in 1-butanol and saturated liquid densities and viscosities

•Experimental solubilities of CH4, C2H6, and CO2 in 1-butanol and saturated liquid properties.•Solubilities and saturated liquid densities were predicted with SRK and PR EOS.•Solubility of C2H6 in 1-butanol is higher than CH4 and CO2.•Liquid density and viscosity reduces with dissolution of CH4 and C2H6.•Dissolution of CO2 increases liquid density and reduces liquid viscosity.

A designed pressure–volume–temperature (PVT) apparatus has been used to measure the (vapor + liquid) equilibrium properties of three binary mixtures (methane +, ethane +, and carbon dioxide + 1-butanol) at two temperatures (303 and 323) K and at the pressures up to 6 MPa. The solubility of the compressed gases in 1-butanol and the saturated liquid densities and viscosities were measured. In addition, the density and viscosity of pure 1-butanol were measured at two temperatures (303 and 323) K and at the pressures up to 10 MPa. The experimental results show that the solubility of the gases in 1-butanol increases with pressure and decreases with temperature. The dissolution of gases in 1-butanol causes a decline in the viscosity of liquid phase. The saturated liquid density follows a decreasing trend with the solubility of methane and ethane. However, the dissolution of carbon dioxide in 1-butanol leads to an increase in the density of liquid phase. The experimental data are well correlated with Soave–Redlich–Kwong (SRK) and Peng–Robinson (PR) equations of state (EOSs). SRK EOS was slightly superior for correlating the saturated liquid densities.