Design, fabrication, and performance evaluation of a two-stage gas cleaning system for Biogas digester
No Thumbnail Available
Views
...
Downloads
...
Date
2023
Authors
Rendell Ian A. Sollano
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Biogas is a renewable energy source produced through Anaerobic Digestion (AD) and is considered as sustainable compared to traditional fossil fuels. However, impurities in biogas can reduce to energy content, which can be addressed by removing the impurities and incombustible gases. This has driven the study to design, fabricate and evaluate a two-stage gas cleaning system for anaerobic biogas digester. the gas cleaning system for anaerobic biogas digestion was designed focusing on water scrubbing absorption technique and was fabricated using locally available materials. The experiment involved using pig manure as substrate for biogas production and conducting tests on the system's gas yield using IRCD4 biogas analyzer. Six sets of trials were carried out to determine CH4 increase and removal efficiency of CO2 and H2S after passing through the gas cleaning system. T-test for two dependent samples was done to analyze the gathered data.
Based on the analysis of the study, increase in methane concentration after the biogas passed through the gas cleaning system were 9.30%, 4.76% and 7.14%, 4.87%, 2.44% and 4.87%, respectively. The average removal efficiency level of H2S and CO2 across six (6) trials was 88.88% and 11.95% respectively. T-test for two dependent samples revealed there is a significant difference (p<0.05) between the concentration of CH4 and H2S before and after the gas cleaning/upgrading process while there is no significant difference (p<0.05) between the concentration of CO2.