Microbial Biogas Production from Pork Gelatine

This research describes the results of anaerobic digestion gelatine as a potential hydrogen source with heat-shocked inoculum. The concentrations applied were VSS (volatile suspended solids) ranging from 10 g VSS/L to 30 VSS/L. initial process pH was 5.5, and, depending on concentration, reached values 7.5 7.8 after 55 days. Although inoculum in collagen, that occurred hydrogenotrophic digestion. In below VSS/L, production dominant only during first 5 days experiments. Then, there change dark fermentation methane production. optimal and yields resulted (7.65 mL ± 0.01 H2/g 3.49 L CH4/g VSS). Additionally, had lowest accumulated emission sulphide (10.3 H2S), while (0.440 0.01mL H2S/g VSS) produced yield. After lag time, grew specific ratio, concentration. sulphur added analysis proved originating biogas created by bacteria remains longer than substrate.