Development of a hydrogen gas purifier for improving the quality of biogas in fermentation process

Abstract

Hydrogen sulfide (H25 cheap materials, activated carbon, scraped iron, sand, cement, and rice husks applied to the small scale biogas production at 30 ppm within 6 hours. The filter materials with highest to lowest H48.18 percent, respectively. In the medium scale biogas production (20 L) at 30 ppm. Scraped iron and sand mixed with activated carbon filter had the best H(200 L) production of the biogas fermentation (30 ppm biogas product), sand mixed with activated carbon filter at the ratio 60:40 displayed the best performances in removing H2(3 day). It is the most environmental friendliness as well as cost-effective filter for biogas fermentation at scale up sizes, at least 20 L. S) is found to be one major serious contaminant to biogas production system. In this research, the team aimed to develop a high efficient filter for removing H2S from the biogas reaction. From all 2S absorptivity were activated carbon, sand, scraped iron, and rice husks those accounted for 88.02, 76.06, 55, 50 and 2S absorptivity (100 percent) and sand showed its H2S removal efficiency lower at 65 percent, respectively. In larger scale S after incubated for 4.5 hours while scraped iron filter as well as activated carbon filter functioned in H2S removal longer time (2 and 3 days, respectively). In order to be able to practically apply for continuous filtering H2S from the continuous biogas production, sand mixed with activated carbon filter exhibited long last filtration