Optimum Organic Loading Rate in the Biomethanation of a Mixture of Cow Dungs and Poultry Droppings
Abstract
The effect of varying the organic loading rate in the digester volume using a mixture of poultry droppings and cow dung as biomass was studied. The study was aimed at determining the optimum organic loading rates, which would produce the maximum volume of biogas from a mixture of poultry droppings and cow dung. The pH was maintained between 6.8 and 7.2. All other parameters affecting the production of gas were kept constant except the organic loading rate. The wastes, poultry droppings and cow dung was mixed in the ratio 60:40 and maintained at a sludge concentration of 700g/l. It was observed that biogas produced from the digester with the organic loading rate of 2.8 kg vs/m3/day gives the highest proportion of methane and the digester with organic loading rate of 3.2 kg vs/m3/day produced the highest proportion of carbon dioxide.
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Copyright (c) 2020 Julius Olatunji Jeje, PhD, Oluwaseun Ruth Alo, Tomiwa Oke Akadiri
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