However, one precondition for introducing organosolv lignin as an alternative commodity is its stable availability and consistent quality (Michels, 2014). Biomethane is produced from the residual streams of downstream processes in large volumes and can be fed into the gas pipeline network or used for the supply of biofuels (Ryckebosch et al., 2011).The solid by-product hydrolysis lignin (accumulates during the conversion of cellulose to sugars) is assumed to be sold as a solid fuel or as an additive for wood pellets.