alternative to the classical chemical Sabatier process is the biological methanation (methanogenesis) within biogas plants. In … conventional biogas plants methane and carbon dioxide is produced. The latter can be directly converted to methane by feeding …

Biogas upgrading using bottom ash from the incineration of municipal solid waste (MSW) is especially interesting for … assess the interaction between bottom ash (BA) and biogas from anaerobic digestion with the outlook of upgrading in terms of …

Upgrading biogas, i.e., the removal of CO2 from CH4 is an attractive regenerative energy as it is supplied continuously … large size. Hence, we give an overview on gas permeation membrane processes which are applied in biogas upgrading. Here, we …. Membrane materials, gas permeation modules and their respective operation as well as gas permeation processes for biogas …

The biogas upgrading is necessary for its application, and alkali CO2 adsorption is one efficient method. In this study …, the produced alkali solution was utilized for biogas upgrading. The CO2 content decreased notably in headspace, which even …

Raw biogas is a valuable renewable energy but usually requires upgrading. The mixed LED (light-emitting diode) light … both biogas upgrading and biogas slurry nutrient removal was the red:blue ratio of 5:5. Lower influent CH4 (methane …) concentration achieved higher biogas slurry nutrient removal efficiency, whereas moderate influent CH4 concentration achieved the …

) of 1.8 day, with specific biogas productivity (SBP) of 5.3 L·L⁻¹·day⁻¹ and COD degradation grade of …> with 8.2 L·L⁻¹·day⁻¹, where COD degradation grade was 90.4%. The biogas collected from the reactor at … in the reactor resulted in an increase of methane content of the produced biogas. However, the low pH value …

This paper studies the potential application of a novel biogas upgrading technology called alkaline with regeneration … (AwR). This technology uses an alkaline solution, along with carbon mineralization, to remove and store CO2 from biogas in … order to create biomethane, a substitute of natural gas. Three different applications of biogas were explored for their …

Two-stage pressurized anaerobic digestion is a promising technology. This technology integrates in one process biogas … methane content in the biogas increased from 75 molar percent (mol%) to 87 mol%. The pH value of the substrate in the methane …