Evaluation Of Economic And Technical Feasibility Of Biogas Production From Poultry Manure In Elfora Agro Industry Debre Zeit

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The economic and technical feasibility of poultry manure to methane conversionrnusing anaerobic digestion and electricity generation was studied in ELFORA poultryrnfarm in Debre Zeit, Ethiopia using three sets of data; chemical analysis of wetrnmanure, annual on farm wet poultry manure production and annual electricrnconsumption of the poultry farm.rnTotal solids (% wet), volatile solids (% TS) and PH were analyzed as reported inrnStandard Methods ASTM and AOAC publications. Phosphorus was analyzed usingrnHatch Analysis system. Ultimate analysis of carbon, nitrogen, hydrogen, oxygen andrnsulfur were done using elemental analysis method. The result shows low carbonrnnitrogen ratio of the manure indicating that wet poultry manure easily ferments inrnanaerobic digestion. The estimated daily volume of wet manure generated on farm isrn27,397kg on average. The amount of nitrogen and phosphorous in the slurry wasrnestimated to be 97.8 kg and 96.94 kg respectively from 4328 kg of dry matter whichrnconstitutes a good fertilizer potential .rnThe estimated methane production with loading rate of 3.03 kg VS per meter cube isrn655meter cube per day for complete mix digester, 807meter cube with loading rate ofrn4.8kg VS per meter cube for plug flow digester and 605 meter cube with loading raternof 0.39kgVS/m3 for covered lagoon digester was estimated. Poultry manure with highrncontent of VS and nitrogen can have high methane yield on site, which could be usedrnto fuel an engine/ generator of 86kw, 94kw and 115kw for complete mix, plug flowrnand covered lagoon digesters respectively.rnThe carbon dioxide equivalents of the maximum methane generated on-farm wererncalculated to be 3.739kt per year. This yield was found to be equal to the carbonrndioxide emitted from the distraction of 1,402 acres forestland. The calculated annualrnenergy equivalent of the yield is 12.37-tera joule with a calorific value of 2.95 terarncalorie and 295 Toe. Economics of anaerobic digestion for all three types of digestersrnshow positive NPV indicating that on farm anaerobic digestion is feasible

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Evaluation Of Economic And Technical Feasibility Of Biogas Production From Poultry Manure In Elfora Agro Industry Debre Zeit

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