Rice husk is one of agricultural waste which have a potential to be processed into biogas. The aim of this research was to study the effect of enzymatic pretreatment and C/N ratio to biogas production from rice husk by solid state anaerobic digestion (SS-AD). This research were operated in batch system and at room temperature. https://ashleyshomestores.shop/product-category/outdoor-arm-chair-with-cushion-set-of-2/