Two-Phase Anaerobic Digestion of Corn Steep Liquor in Pilot Scale Biogas Plant with Automatic Control System with Simultaneous Hydrogen and Methane Production

Experimental studies of two-phase anaerobic digestion corn steep liquor in semi-continuous automatic and semi-automatic modes operation a cascade two bioreactors with monitoring control systems were performed. Corn liquor—a waste product from the process treating grain for starch extraction—was used as substrate simultaneous hydrogen methane production. The daily yields biohydrogen bioreactor 1 (with working volume 8 dm3) are variable. In good operation, they range 0.7 to 1.0 L biogas dm3 bioreactor, optimal pH is 5.0–5.5. concentration 14–34.7%. biomethane 2 80 vary 0.4 0.85 high remains practically constant (in 65–69%). At dilution rate day−1 an organic loading 20 gL 1, respectively, 0.05 2, best results obtained. computer system presented. Some energetical considerations discussed.