Design, construction and evaluation of a multi-bed cylindrical reactor for biogas production from livestock and poultry wastes

Ghafori, Hasan; Ebrahimi, Hamid Reza; Kamali, Ali

doi:10.22034/JRMAM.2024.14478.670

Design, construction and evaluation of a multi-bed cylindrical reactor for biogas production from livestock and poultry wastes

Document Type : Research Paper

Authors

Hasan Ghafori ¹

Hamid Reza Ebrahimi ²

Ali Kamali ³

¹ Department of Biosystems Engineering, Isfahan (khorasgan) Branch, Islamic Azad University, Isfahan. Iran

² Associate Professor, Department of Chemical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan. Iran

³ M.Sc, Department of Mechanical Engineering, Majlesi Branch, Islamic Azad University, Isfahan. Iran.

https://doi.org/10.22034/JRMAM.2024.14478.670

Abstract

The research projects conducted in the field of biogas shows that the type of reactor and the composition of different animal wastes have a direct effect on the amount of biogas extraction. Therefore, the main goal of this research is to design and build a multi-bed reactor with a new capability and investigate the effect of the combination of livestock and poultry waste on the gas production process. For this purpose, a multi-bed cylindrical reactor equipped with a separate stirrer for each bed was designed and built, and the effect of different combinations of livestock and poultry wastes in three levels including 60% by weight of chicken waste and 40% by weight of cow waste, 50% by weight of chicken waste and 50% by weight of cow waste, and finally 40% by weight of chicken waste and 60% by weight of cow waste. , the compound concentration at two levels of TS=10% and TS=15% and the reactor temperature at two levels of 37 and 40 degrees Celsius were examined on the pH and percentage of extracted biogas. The results showed that the use of a bed stirrer in this type of reactor increased the volume of produced gas by 17%. Increasing the ratio of animal waste to poultry, balanced the acidity of the environment and finally increased the percentage of extracted biogas. Diluting the composition from TS=15% to TS=10% led to an increase in the pH level and approaching the neutral environment. Also, reducing the temperature of the reactor from 40°C to 37°C increased the percentage of extracted biogas by 8%.

Keywords

Reactor

Bio gas

Methane gas

Animal waste

Subjects