Assessment of Biogas Potential of Codigested Cow Manure with Soymilk Dreg
Year: 2025
Type: article
Abstract: The use of amendment of Soymilk Dreg (SMd) substrate to improved biogas yield from Cow Manure (Cm) substrate was investigated and duplicate batch experiments were carried out at 4 g VS/L, in eight 2 L volume polyethylene biodigester, with 1.8 L working volume using 144 mL of inoculum throughout the experiments, for 30 days at a fixed temperature of 33 °C. The substrates were divided to three ratios (Cm: SMd (%)); 2:1(50 %), 3:1(33 %) and 4:1(25 %) and a control with only Cm in biodigesters labelled A, B, C and Control. The results shows that biodigesters A, B and C recorded biogas volumes of 25.96, 23.51 and 18.46 % above the control and the bioCH4 composition of biodigesters A, B and C were 50.48, 47.08 and 40.00 % higher than the control. It was concluded that the presence of SMd provided a balanced substrate composition, supporting a stable methanogenic activity across treatments and higher biogas and bioCH4 yields. It is recommended that 25 % SMd (volatile solid) amendment should be codigested with Cm for optimal biogas production.
Authors: Orkuma J.G., Samuel, D.A., Eziefula B.I., Kantiok D.Y.
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4409600563