Biogenic Hydrogen Conversion of De-Oiled Jatropha Waste via Anaerobic Sequencing Batch Reactor Operation: Process Performance, Microbial Insights, and CO₂ Reduction Efficiency

Table 4

Methane fermentation of H₂ fermentor effluent.

Seed source	Final pH	Cumulative biogas	Cumulative CH4	MPR (mL/L*d)	MY (mL CH4/g COD)
Pig slurry	6.8±1.2	368±4.4	201.0±2.6	425.3±5.1	20.5±0.5
Cow dung	7.0±1.0	259±12.1	139.3±5.7	348.6±4.2	13.7±0.8