Removal of hydrocarbons from synthetic road runoff through adsorptive filters

Compact filter systems are very promising treatment facilities for urban runoff, which are installed in order to significantly reduce the load of pollutants from road runoff. The objective of this research was to evaluate the effectiveness of activated carbon, activated lignite, zero valent iron, exfoliated graphite, amorphous ferric hydroxide and activated alumina for the removal of petrol hydrocarbons from a synthetic road runoff. Therefore the kinetics and equilibrium adsorption of petrol hydrocarbons on the various adsorbents have been investigated using column adsorption experiments levels from 500 mg L-1 to 21 g L-1. It was found that the adsorption of petrol hydrocarbons is unaffected by ph. Among the tested adsorbents, exfoliated graphite was the most effective with a maximum adsorption capacity for petrol hydrocarbons of 3850 mg g-1. The experimental equilibrium data are fitted to both the Freundlich and Langmuir isotherms, respectively.



Vesting, A.; Heinz, E.; Helmreich, B.; Wichern, M. (2015) Removal of hydrocarbons from synthetic road runoff through adsorptive filters, Water Sci. Technol. 72(5), 802-809