Effects Of Time And Substrate Properties On Biogas Production Yield From Fresh Cattle Cud

ABSTRACT

 In this study waste animal bye product, cattle cud, was utilized for the production of biogas to ascertain the effects of time and substrate properties on the biogas yield. While the temperature and the pH properties of the substrate were held constant at 45°C and 3.5 respectively, their effects after 28-day retention time were studied. 1 litre capacity laboratory-sized anaerobic digestion system was used for the biogas production while bOg of the sample was reconstuted with 100 ml of distilled water. Apart from the biogas yield, the substrate (cattle cud) was charactierized, before and after use. There was significant difference among the characteristic properties (volatile matter, moisture content, conductivity, pH, ash content, and carbon to nitrogen ratio) of the cattle cud. Total cumulative yield of the biogas during the study period was 1074.3 cm3 . From the result, week 3 had the highest weekly yield of 331.40 cm3while, the highest individual daily yield was put on the 22nd day with a value of 52.80 cm3. The results obtained could be applied at industrial scale for commercial production.