• Record: found
  • Abstract: found
  • Article: not found

High loading toluene treatment in a compost based biofilter using up-flow and down-flow swing operation.

Journal of hazardous materials

analysis, metabolism, Air Pollution, prevention & control, Carbon Dioxide, Ceramics, Filtration, Sewage, microbiology, Soil, Toluene, Air Pollutants

Read this article at

      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


      A compost/ceramic (1:1, v/v) three section laboratory-scale biofilter inoculated with acclimated activated sludge was examined to treat high loading toluene vapors from a synthetic gas stream. The biofilter was operated continuously at different gas flow rates, 0.108-0.15m(3)h(-1), with inlet toluene concentrations ranging 0.5-13gm(-3). The overall performance of the biofilter was divided to seven stages according to the mode of operation (down-flow and up-flow) over a period of 102 days. Removal efficiencies ranging from 48 to 100% and elimination capacities ranging from 26 to 180gm(-3)h(-1) were observed depending on the initial loading rates and the mode of operations. A maximum elimination capacity of 180gm(-3)h(-1) was observed in the last period at an inlet toluene concentration of about 13gm(-3). The results showed that changing the mode of operation (up-flow and down-flow) periodically will improve the performance of the biofilter under high inlet toluene concentration (higher than 4gm(-3)). Results obtained in this study provide insight into the possibility of the biofilter to treat high inlet concentrations rather than low concentrations well known in the literature.

      Related collections

      Author and article information



      Comment on this article