Coadsorption of organic compounds and water vapor on BPL activated carbon.4. Methanol, ethanol, propanol, butanol, and modeling

A volumetric apparatus was used to measure adsorption equilibria for alcoho ls and their mixtures with water on BPL activated carbon. Pure alcohol isot herms are reported for methanol, ethanol, propanol, and butanol at 25, 50, 75, and 100 degrees C over a large pressure range. Binary equilibria are re ported for each alcohol coadsorbed with water at 25 and 100 degrees C inclu ding hysteresis for all systems. Enhanced water adsorption was observed in the presence of all alcohols, and enhanced alcohol adsorption was observed for methanol and ethanol. Pure alcohol isotherms are described using a mult itemperature Toth equation, and binary equilibria are modeled with the viri al mixture coefficient method.