Cellulose 2 Cellulosic material Acid hydrolysis 1 Acidolysis 1 Anaerobic digestion 1 Anaerobic digestion process 1 Bio-electrochemical 1 Bio-electrochemical systems 1 Bioelectrochemical system 1 Bioelectrochemical systems (BES) 1 Biomass 1 Carbon Fibers 1 Cellulolytic bacterium 1 Cellulose Derivatives 1 Clostridium 1 Conductive materials 1 Crystalline materials 1 Crystallinity index 1 Electrochemical systems 1 Electrodes 1 Entertainment industry 1 Fixed film reactor 1 Fourier Analysis 1 Fourier transform infrared spectroscopy 1 Graphite fibers 1 Hydraulic retention time 1 Hydrochloric Acid 1 Hydrogen production 1 Hydrogenotrophic methanogen 1 Hydrolysis 1