Destruction　of　gaseous　toluene　via　ferro-electric　packed　bed　dielectric　barrier　discharge　plasma　in　a　coaxial　cylindrical　reactor　was　carried　out　at　atmospheric　pressure　and　room　temperature.　The　difference　among　three　kinds　of　reactors　was　compared　in　terms　of　specific　energy　density　(SED),　energy　yield　(EY),　toluene　decomposition.　In　order　to　optimize　the　geometry　of　the　reactor,　the　removal　efficiency　of　toluene　was　compared　for　various　inner　electrode　diameters.　In　addition,　qualitative　analysis　on　by-products　and　particular　discussion　on　toluene　abatement　mechanisms　were　also　presented.　It　has　been　found　that　ferro-electric　packed　bed　DBD　reactor　could　effectively　decompose　toluene.　Toluene　removal　efficiency　enhanced　with　increasing　SED.　With　respect　to　toluene　conversion,　1.62　mm　electrode　appeared　to　be　superior　to　1.06　mm　electrodes.　BaTiO3　reactor　had　the　highest　toluene　removal　efficiency　among　the　reactors.　For　NaNO2　reactor,　the　highest　EY　could　reach　17.0　mg/kWh　to　a　certain　extent.　(C)　2009　Elsevier　B.V.　All　rights　reserved.