Biogas Yields Variance from Anaerobic Co-Digestion of Cow Dung with Jatropha Cake Under Mesophilic Temperatures

Abstract

Anaerobic co-digestion requires the digestion of two or more homogenous substrates to produce biogas. The superlative participated condition is when principal amount of most important substrate (example manure or sewage sludge) is combined and fermented with each other with lesser quantities of single, or a variety of additional substrate. The co-digestion of one or more substrates commonly improves the biogas output from anaerobic digesters owing to positive improvement brought about in the digestion medium and the furnishing of missing nutrients in one substrate by another. Anaerobic co-digestion of cow dung and jatropha cake for biogas production was carried out in the batch digester in the absence of oxygen at ambient temperature with different mixing ratios for 40 days. The result indicated that treatment with 75% jatropha 25% cow dung had the highest volume of biogas at the rate of 24.41% and treatment with 100% jatropha released has the highest percentage quality of biogas produced (methane) at the rate of 59.6%. Treatment with 50% cow dung 50% jatropha cake was found to be the appropriate mix ratio, since it was rank 2nd in both qualitative and quantitative analytical point of view from the experiment performed.

Anaerobic Digestion of Lignocellulosic Waste Materials

“…The respective industrial process is implemented using one-step or two-step reactors in singe-phase or double-phase as a specific batch or applying continuous operation, with or without liquid phase recirculation [13]. Depending on the feedstock and system design, biogas typically consists of 55-70% CH 4 , 25-40% CO 2 , <2% N 2 , <0.5 O 2 , <0.5% H 2 S, 1-5% H 2 O, <0.5% NH 3 , 0-50 mg/m 3 SiO, 6-7.5 kWh/m 3 Hs [38,39]. Generally, raw biogas provides a methane concentration of 50-70% and its HHV is approximately 37.78 MJ/mn 3 .…”

“…), could produce satisfying yields of energy. On that account, techniques that increase the lignocellulosic biomass accessibility towards the achievement of anaerobic microbial decomposition are highly demanded [38].…”

Effect of Combined Particle Size Reduction and Fe3O4 Additives on Biogas and Methane Yields of Arachis hypogea Shells at Mesophilic Temperature

“…The non-edible parts of agricultural residues that can be used as feedstock for biogas production include leaves, corn stover, groundnut shell, cocoa pod, cassava peel, straw, etc. They are available in abundance globally and are cost-effective, with a vast capacity for biotransformation into biofuels and other ancillary products [11,12]. Hydrolysis, acidogenesis, acetogenesis, and methanogenesis are the four vital biological and chemical stages of anaerobic digestion.…”

Experimental evaluation of the influence of combined particle size pretreatment and Fe3O4additive on fuel yields ofArachis Hypogeashells

“…), activated sludge, waste from the food industry, landfill gas, stillage from ethanol production, etc. ( Cesaro and Belgiorno, 2015 ; Ogunkunle et al, 2019 ). Biomass is the fourth largest global primary energy source contributing about 14%, and it can be as higher as 35% in developing countries ( Khanal et al, 2019 ).…”