path for the gas exiting the boiler 24 through the material container 28 and back into the re circulating gas line the temperature of the container 28 is maintained above 70 u00b0 c so that the introduction of hot gasses thereto via conduit 40 increases at least locally the temperature of the material therein to a temperature at which moisture is released therefrom the gasses exiting the container 28 therefore have a higher moisture content than the gasses entering the container 28 and therefore in this mode of operation by passing the hot gas exiting downstream of the boiler through the container 28 the moisture level of the gas circulating between the oven and the thermal reactor 20 can be increased this method of processing also raises and maintains the temperature in the container 28 to a temperature greater than that of the container 30 the containers progress through the apparatus from left to right so that at the end of a processing cycle the container 12 is removed from the processing chamber and any material therein disposed of according to the type of material the material container 28 is removed from the hood 32 and is attached to the processing chamber 14 the material container 30 is removed from the hood 32 and takes the place of the container 28 and a new processing container with new material to be processed replaces the position of container 30 while the movement of cartridge 30 from one position to another is described as a physical move it will be well appreciated by the skilled person that through valve manifolding the processing chamber 30 could alternatively take the place in the process of chamber 28 without.