Sustainable and environmentally friendly impregnation agent based on the use of colloidal lignin particles that provide protection against biodegradation and fire

The primary objective of the RåBra project is to develop a bio-based wood impregnation agent utilizing lignin-based additives. The project aims to establish a novel formulation and application method that significantly reduces water usage in the impregnation process. By decreasing the water content, the process will require less energy for subsequent drying and enable shorter thermal treatment times during oil curing, compared to conventional methods. This optimization is expected to yield substantial improvements in process efficiency, including reduced energy consumption, shortened production cycles, and increased throughput capacity.

RåBra-project will generate knowledge and data on how to develop a lignin-based impregnation agent for wood that protects against biodegradation and fire, how to achieve a cost-efficient process and how this should be utilized in the best possible way with regard to the environment and value creation. Challenges regarding scaling up and regulations will also be addressed.