Effect of lignin-derived and furan compounds found in lignocellulosic hydrolysates on biomethane production

► Anaerobic digestion of xylose in presence of pretreatment byproducts was studied. ► Neither phenolic and furan compounds nor lignin polymers inhibited anaerobic digestion. ► Byproducts and natural and synthetic lignin polymers took place in the methane production. ► Higher S/G ratios and lower molecular weights in lignin led to greater methane production.