Transforming biogas into biomethane using membrane technology

Biochar enables anaerobic digestion of aqueous phase from intermediate pyrolysis of biomass

“…One of the simplest available biological conversion is anaerobic digestion, that consists in a series of interconnected biological conversions that end up with the production of a gaseous mixture of carbon dioxide and methane, which can be purified and used as drop-in fuel (Scholz et al, 2013). This conversion can be performed into low cost and non-sterile equipments by-means of mixed anaerobic consortia which can be, in principle, adaptable to the widest range of chemical substrates (Appelsa et al, 2011).…”

Integrated biorefineries: CO2 utilization for maximum biomass conversion

“…The options for carbon capture vary from solvent-based technologies such as Absorption/desorption using Monoethanolamine (MEA) [46,47], to underdeveloped methods such as oxyfuel combustion [48], membrane separation [49,50], nanomaterial sorbents [51] and chemical looping [52,53]. In parallel, intensive research is devoted to CO 2 utilization for producing fuel and products [54], and among them microalgae cultivation has gained significant research interest [55,56].…”

Upgrading strategies for effective utilization of biogas

“…Maximum elimination capacities for aerobic and anaerobic biofilters were found to be 100 gH 2 S m 23 Table 1. Some of the biogas quality requirements of different countries for grid injection [17][18][19][20] Parameter The potential of Azospirillum-like anaerobic phototrophic bacteria consortium for H 2 S removal from swine waste biogas was found to be more than 97%. Rapid decrease in concentration of H 2 S from 1200 to 30 ppm was observed within 3 h. The removal efficiency remains unaffected when the experiment was repeated, indicating the robustness of the biofiltering process [41].…”