A systematic study on simulation and modeling of a solar biogas reactor

This paper presents an overview of solar biogas simulation and optimizing performance of biogas using a renewable energy source such as solar energy. Biogas has many benefits to our environment and climate. Biogas is a renewable fuel produced by the breakdown of organic matter such as food scraps and animal waste, and we can use the biogas to generate electricity. For simulation of biogas, we used RStoic and RCSTR rectors. A feed rate of 0.333 kg/day wet waste and 0.333 kg/day water was used to achieve the maximum biomethane (CH₄) production rate of 85.5627% at a temperature of 318.15 K and 15 days of batch process. In this simulation, we use solar energy to apply heat to the digester unit and provide proper preferable conditions. In this process, carbon dioxide and hydrogen sulfide are additionally generated gases. Generated biomethane (CH₄) has many uses such as in biomethane filling stations. In 2015, approximately 697 biomethane (CH₄) filling stations used 0.16 billion m³ of biomethane as a transportation fuel.