Multi-stage adsorptive purification process for improving desulfurization performance of biogas

Advances, challenges, and perspectives of biogas cleaning, upgrading, and utilisation

“…In other words, once the activated carbon is fully saturated with siloxanes, it will need to be replaced with fresh adsorbent. As a result, it is necessary to select an AC material with a high siloxane adsorption capacity [183,197,198].…”

VALORIZATION OF BIOGAS THROUGH SIMULTANEOUS CO<SUB>2</SUB> AND H<SUB>2</SUB>S REMOVAL BY RENEWABLE AQUEOUS AMMONIA SOLUTION IN MEMBRANE CONTACTOR

“…Biogas mainly contains methane with about 60 vol%, and carbon dioxide with about 40 vol%, thus it can be used as fuel for power and heat production [2] . Other trace species including ammonia, dihydrogen, dinitrogen and hydrogen sulfide also exist in biogas [3,4] . Biogas can be used for direct combustion after desulfurization because H2S can cause corrosion in pipelines and equipment [5] .…”

Adsorptive purification of volatile methyl siloxanes in a digester biogas stream

“…The removal performance of ACs was tested with the real biogas samples. Bak et al 26 aimed to simultaneously and effectively remove siloxanes (D4 and D5) and S-containing pollutants (such as H 2 S, carbonyl sulfur and carbon disulfur) from biogas. Dynamic adsorption tests were applied to simulated biogas samples using iron oxide, AC, silica gel and zeolite adsorbents.…”