| Selexol, a mixture of polyethylene glycol dimethyl ethers, was found to be an excellent solvent for removing sulphur dioxide emissions. The solubility measurements of sulphur dioxide in tetraethylene glycol dimethyl ether at 40;Activity coefficients of sulphur dioxide were determined from the solubility data. The NRTL equation correlated the data well with an average error of approximately 10% and was used to calculate the excess Gibbs energy, entropy and enthalpy of the liquid mixture over the full range of composition. Heats of mixing and solution at infinite dilution were also determined for the (sulphur dioxide-Selexol) system. The effect of water on the solubility of sulphur dioxide was investigated with a 6.04 wt% water solution. As expected the solubility decreased with an increased presence of water. |
