Spherical activated carbons for low concentration toluene adsorption

The activation process of a spherical activated carbon (SAC) from Kureha Carbon was analysed and the behaviour of these materials to adsorb low concentration volatile organic compounds was studied. Two series of activated carbons were prepared using CO2 or steam as activating atmospheres at 880 and 840 °C, respectively. Activation times between 45 min and 24 h were selected, leading to burn-offs between 21 and 60%. The results show, for similar...