Carbon Sequestration Through Syngas Biomethanation Coupled with H2 Supply for a Clean Production of Natural Gas Grade Biomethane

Abstract

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Microbial Enrichment Techniques on Syngas and CO2 Targeting Production of Higher Acids and Alcohols

“…A gas mixture of N 2 /CO 2 , where no reducing equivalents were added, served as the control for the experiment with CO and/or H 2 in the headspace. The composition of the gas mixtures was calculated based on the syngas quality index, SQI, that expresses the e-mol per C-mol of the gas mixture (2) and was first introduced by Asimakopoulos et al [ 42 ]. The SQI was set between 5 and 5.3 and 6 for chain elongation and butyric acid reduction to butanol, respectively, to match the e-mol per C-mol of the target products (i.e., 5, 5.33 and 6 for butyric acid, caproic acid and butanol, respectively).…”

Competitiveness of syngas biomethanation integrated with carbon capture and storage, power-to-gas and biomethane liquefaction services: Techno-economic modeling of process scenarios and evaluation of subsidization requirements

“…The hydrogen-enriched syngas mixes with biomethanation liquid medium and enters the biomethanation unit (Fig. 6), where syngas conversion to methane takes place through R. 1 and R. 2 according to the operating conditions and conversion efficiencies specified further below and based on the experimental evidence developed by Asimakopoulos et al [9,39] in lab-scale and pilot trickle-bed systems.…”

Bibliometric Analysis of Renewable Natural Gas (Biomethane) and Overview of Application in Brazil

“…Another technique that can also be used is the gasification of biomass, which generates a gas mixture (synthesis gas) that constitutes a rich source of carbon and energy for the production of second-generation renewable fuels, such as biomethane [58]. A new approach for the production of CH 4 with high yield and biomass selectivity using a pressurized fixed two-stage bed reactor system incorporating hydropyrolysis and gas-phase hydrotreatment is also considered [51].…”