Fungicidal properties of black liquor from the waste MDF board digestion in terms of wood protection
B Mazela, W Perdoch, A Szulc, I Sieminska
The aim of the work was to determine the fungicidal properties of black liquor as a product of the chemical digestion of waste MDF board. The resistance of wood treated with black liquor from MDF waste pulping process was compared with the resistance of wood treated with black liquor from the pulping process of a by-product from agricultural production. The control material consisted of non-treated wood samples. All samples in two independent tests were subjected to the action of mould or wood decay fungi. The fungicidal properties of potential preservatives in both studies were determined by the accelerated method. It was found that the black liquor, which is a by-product in the process of pulping lignocellulosic material, shows various fungicidal properties depending on the type of raw material.