Utilization of Emissions from Wood Heat Treatment
Environmentally sound wood protection and preservation methods have become increasingly important due to public and legal demand. Chemical, biological or thermal treatment of wood is a convenient method to achieve this goal. Nowadays, thermal modification of wood has become a quite established procedure, and there is a growing number of industrial treatment centers all around Europe. Yet there is little information available about the condensable gaseous emissions from the treatment processes. In general, all gaseous emissions are burnt to fulfill environmental regulations although preliminary scientific work indicates that some of the emitted compounds could be utilized in various ways and therefore should be considered as valuable by-products. Our work aims at the characterization of these emissions, and is focusing on the condensable gases emitted by a wood treatment plant. It will be determined, whether the emissions contain compounds considered to be valuable products and if they could be obtained in amounts, which are sufficient for an economically viable recovery. The study is conducted in cooperation with a thermal wood treatment plant in Austria.