Fig. 5From: Coproduction and enhancement of electricity and biobutanol using adsorption carrier solid-state fermentationSEM image of carbon felt anode by no carrier fermentation (NC), polyurethane and carbon felt (PC), absorbent cotton and carbon felt (ACC) and cotton fiber and carbon felt (CFC) carrier solid-state fermentation. a, e, f NC, b CFC, c ACC, d PCBack to article page