Analysis of the difference in biogas volume between continuous and semi-continuous systems

Abstract

The increasing demand for energy due to population growth and reduced sources of oil reserves puts pressure on every country to immediately produce and use renewable energy as a substitute, one of the alternative energy sources is biogas. The bacteria used in making this biogas is EM4, researchers used these bacteria because they can balance microorganisms. Microorganism inoculants consisting of 90% Lactobacillus produce cow dung are accommodated in a container made of HDPE plastic. The dimensions of the reservoir are 1 m3. Data collection was carried out starting from the first day to the fourteenth day. Retrieval of pressure data using a pressure gauge, temperature data retrieval using a thermometer gun and measuring the volume of biogas using an Arduino-based flow meter. From this study, it was found that biogas storage using HDPE polymer material with a size of 1x1 meters can accommodate a maximum biogas volume of 208.12 litres. In the non-continuous system, the volume of biogas produced is not stable with the total volume of biogas before going through the filter for 14 days is 1075.12 litres with an average volume of 76.79 litres/day while the total volume of biogas that has been through the filter for 14 days is 995.71 litres with an average volume of 71.12 litres/day.