Biogas as a source of renewable syngas production: advances and challenges

Mota, N.; Álvarez-Galván, M. Consuelo; Navarro, R.M.; Fierro, J.L.G.

doi:10.4155/bfs.11.15

Cited by 31 publications

(10 citation statements)

References 103 publications

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“…A recent study from the European Union (EU) showed that biomass was the major source (more than 60%) for renewable energy production in 2012 amongst EU countries (Eurostat, 2012). However, on global scale, biomass represents only 10% of the produced renewable energy (Mota et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Presence and Role of Anaerobic Hydrolytic Microbes in Conversion of Lignocellulosic Biomass for Biogas Production

Azman

Khadem

Lier

et al. 2015

Critical Reviews in Environmental Science and Technology

167

107

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In recent years, biogas production from complex biomass has received great interest. Therefore, many studies have been conducted to understand the anaerobic digestion process and to characterise responsible microbes for the biochemical conversions. Although our knowledge about biogas production in general is rapidly increasing, less information is available about hydrolytic microbes within anaerobic bioreactors. Here, we pinpoint the urgent need for solid fundamental knowledge about hydrolytic bacteria within biogas plants. In this review, current knowledge about anaerobic hydrolytic microbes is presented, including their abundance in biogas plants, and the factors impacting their activity.

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Section: Introductionmentioning

confidence: 99%

Presence and Role of Anaerobic Hydrolytic Microbes in Conversion of Lignocellulosic Biomass for Biogas Production

Azman

Khadem

Lier

et al. 2015

Critical Reviews in Environmental Science and Technology

167

107

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“…DRM has received notable attention as a green chemical reaction to convert greenhouse gases, biogas 5,6 or natural gas 7 into value‐added chemicals and fuels. The practical industrial implementation of DRM has limitations due to the high temperatures needed to produce synthesis gas.…”

Section: Introductionmentioning

confidence: 99%

The effects of stoichiometry on the properties of exsolved Ni‐Fe alloy nanoparticles for dry methane reforming

et al. 2020

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The dry reforming of methane has received notable attention as a chemical process to convert natural gas into value-added chemicals and fuels. Ni-based exsolution catalysts using perovskite oxides supports have been used for their attractive sinterresistance and coke-resistance properties. The perovskite oxide in itself has unique defect chemistry that can be used to manipulate and control the properties of the catalyst nanoparticles exsolved on the surface, therefore influencing both the nanoparticle and support characteristics. In this study, the La:Fe ratio of Ni-doped LaFeO 3 was used to manipulate and control the properties of exsolved Ni-Fe alloy nanoparticles. The Ni-Fe nanoparticles consisted of different sizes ranging from 10 to 380 nm. Temperature programmed surface reaction studies along with materials characterization with SEM, STEM-HAADF, XRD, and BET showed that the Ni-Fe nanoparticles from different solid precursors have the same active sites for methane activation but differ in performance and stability because of size effects, metalsupport strength, composition and support basicity. A mechanism is proposed to decipher the merits of the Ni-Fe nanoparticles with the best activity, selectivity, and stability in this study.

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“…However, the actual composition, as well as the CH4/CO2 ratio, differs depending on the type of feedstock and the digestion process used [3]. Although biogas is the main renewable energy source contributing to the global energy supply [4], technical challenges still prevent it from being fully utilised for the generation of electricity.…”

Section: Introductionmentioning

confidence: 99%

Biogas Upgrading Via Dry Reforming Over a Ni-Sn/CeO2-Al2O3 Catalyst: Influence of the Biogas Source

et al. 2019

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Biogas is a renewable, as well as abundant, fuel source which can be utilised in the production of heat and electricity as an alternative to fossil fuels. Biogas can additionally be upgraded via the dry reforming reactions into high value syngas. Nickel-based catalysts are well studied for this purpose but have shown little resilience to deactivation caused by carbon deposition. The use of bi-metallic formulations, as well as the introduction of promoters, are hence required to improve catalytic performance. In this study, the effect of varying compositions of model biogas (CH4/CO2 mixtures) on a promising multicomponent Ni-Sn/CeO2-Al2O3 catalyst was investigated. For intermediate temperatures (650 °C), the catalyst displayed good levels of conversions in a surrogate sewage biogas (CH4/CO2 molar ratio of 1.5). Little deactivation was observed over a 20 h stability run, and greater coke resistance was achieved, related to a reference catalyst. Hence, this research confirms that biogas can suitably be used to generate H2-rich syngas at intermediate temperatures provided a suitable catalyst is employed in the reaction.

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Biogas as a source of renewable syngas production: advances and challenges

Cited by 31 publications

References 103 publications

Presence and Role of Anaerobic Hydrolytic Microbes in Conversion of Lignocellulosic Biomass for Biogas Production

Presence and Role of Anaerobic Hydrolytic Microbes in Conversion of Lignocellulosic Biomass for Biogas Production

The effects of stoichiometry on the properties of exsolved Ni‐Fe alloy nanoparticles for dry methane reforming

Biogas Upgrading Via Dry Reforming Over a Ni-Sn/CeO2-Al2O3 Catalyst: Influence of the Biogas Source

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