Mathematical Modeling Of Biogas Yield From Anaerobic CoDigestion Of Organic Waste And Pig Dung
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 5
Abstract
Modeling of industrial plants and processes is commonly used for their optimization and control. Modeling is widely applied for engineering problems because of the advantages it possesses when it comes to process optimization and control. In this research, we model the anaerobic co-digestion of organic waste and pig dung to estimate the cumulative biogas yields, and biogas yielding rate potential. ModifiedGompertz and linear equationswere used to modeledcumulative, and rate of biogas yields.Pig dung and organic wastes were collected from a local farm anddifferent households in Nigeria. The collected organic wastes (40kg) wereanaerobically co-digested with 10kg of pig dung for complete hydraulic retention time to take place.The experimental data obtained from co-digestion of pig dung and organic wastes were fitted into the linear equation of the biogas yield rate in the ascending and descending limb. The results obtained reveal that the coefficient of determination recorded was high for modified Gompertz kinetic model (0.9952), and the regression value R2 for rate of biogas yield obtained from linear plot was 0.9268.Therefore, both Modified Gompertz plot and linear plot had high correlation, and both can be used to simulate biogas yields from codigestion of biodegradable organic waste and pig dung. Besides, the cumulative biogas yields obtained was 3.2 litres, and rate of biogas yield was 0.2 litre/hr.
Authors and Affiliations
Joel Oluwayomi Oyejide, Ejiroghene Kelly Orhorhoro, David Atadious
Keywords
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