Analyzing Biogas Production from Sheep Dung and Poultry Droppings Using Microbial Electrolysis Cells

Abstract

Biogas is considered a renewable energy source with several advantages, including reducing greenhouse gas emissions, decreasing dependence on fossil fuels, and utilizing livestock manure and crop straw. Our research involved using sheep dung and poultry droppings in equal proportions in two digesters for experimental analysis. The digester was systematically filled with an appropriate volume of inoculum and raw sheep dung. Semi-continuous feeding was initiated with sheep dung alone for 90 days. Data obtained during this period was used as a reference period (control). The above procedure was repeated using poultry droppings separately. The results showed that poultry droppings produced a higher cumulative biogas production of 17,490 ml/week in 90 days than sheep dung. This research has been proven to be effective. Additionally, the biogas from poultry droppings had a high calorific value of 14.12 kcal/m³, with 0% carbon monoxide and an excitingly high 16.46% methane content. Before anaerobic digestion at 30°C, sheep dung had a pH value 9.79, while poultry droppings measured 9.16 at 29°C. These findings strongly indicate the suitability of poultry droppings for biogas production. However, poultry droppings showed exceptional potential and merit in methane production, making them a compelling substitute for kerosene and coal for domestic applications.