Impregnation of Woods with Biocides

Impregnation of wood with conventional fluids is generally limited by pits clogged with debris that make them resistant to fluid flow. Pit impermeability poses a major limitation to effective biocide treatment of many species containing high percentages of heartwood. Since SCCO2 functions as an effective biocide transport medium [23, 

this methodology is of growing interest for wood treatments and was most recently established in the commercial application by the Austrian company Natex, with a yearly capacity of 60 000 m [25, 26], The postulated advantages are  

---