Syngas biomethanation: Current state and future perspectives

Bermejo, Sergio; Lebrero, Raquel; Muñoz, Raúl

doi:10.1016/j.biortech.2022.127436

Cited by 27 publications

(11 citation statements)

References 124 publications

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“…Apart from bio-oil, syngas has the potential to be upgraded into biomethane (Schwede et al 2017;Paniagua et al 2022), as listed in Table 10. The composition of syngas varies according to the organic waste composition and its producing conditions.…”

Section: Upstream Integration Systemmentioning

confidence: 99%

“…Biological biomethanation is the method that converts syngas to biomethane via methanogenic microorganisms metabolism at temperature ranges of 35-75 °C (Paniagua et al 2022). The biological methanation of syngas can occur via the conversion of carbon monoxides, carbon dioxides, and hydrogen into methane using different routes harbored by archaea and bacteria, as shown in Fig.…”

Section: Upstream Integration Systemmentioning

confidence: 99%

“…An alternative pathway for syngas methanation is the conversion of carbon monoxide to hydrogen and carbon dioxide through carboxydotrophic hydrogenogenesis (Paniagua et al 2022). This reaction is facilitated by microorganisms, including Thermincola, Rhodospirillum, Desulfotomaculum, Caboxydocella, Carboxydothermus, and Moorella (Kato et al 2021;Liu et al 2020).…”

Section: Tablementioning

confidence: 99%

“…Whether one pathway or the other is used depends on the availability of different compounds, such as formate or hydrogen, in the system. In the case of acetoclastic methanogens, acetic acid is converted directly into methane (Paniagua et al 2022;Dyksma et al 2020). On the other hand, syntrophic acetateoxidizing bacteria oxidize acetic acid into carbon dioxide and hydrogen, which is then utilized by hydrogenotrophic methanogens to produce methane.…”

Section: Tablementioning

confidence: 99%

“…On the other hand, syntrophic acetateoxidizing bacteria oxidize acetic acid into carbon dioxide and hydrogen, which is then utilized by hydrogenotrophic methanogens to produce methane. This latter pathway has been considered particularly important under thermophilic fermentation conditions (Paniagua et al 2022).…”

Section: Tablementioning

confidence: 99%

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Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

et al. 2023

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Climate change issues are calling for advanced methods to produce materials and fuels in a carbon–neutral and circular way. For instance, biomass pyrolysis has been intensely investigated during the last years. Here we review the pyrolysis of algal and lignocellulosic biomass with focus on pyrolysis products and mechanisms, oil upgrading, combining pyrolysis and anaerobic digestion, economy, and life cycle assessment. Products include oil, gas, and biochar. Upgrading techniques comprise hot vapor filtration, solvent addition, emulsification, esterification and transesterification, hydrotreatment, steam reforming, and the use of supercritical fluids. We examined the economic viability in terms of profitability, internal rate of return, return on investment, carbon removal service, product pricing, and net present value. We also reviewed 20 recent studies of life cycle assessment. We found that the pyrolysis method highly influenced product yield, ranging from 9.07 to 40.59% for oil, from 10.1 to 41.25% for biochar, and from 11.93 to 28.16% for syngas. Feedstock type, pyrolytic temperature, heating rate, and reaction retention time were the main factors controlling the distribution of pyrolysis products. Pyrolysis mechanisms include bond breaking, cracking, polymerization and re-polymerization, and fragmentation. Biochar from residual forestry could sequester 2.74 tons of carbon dioxide equivalent per ton biochar when applied to the soil and has thus the potential to remove 0.2–2.75 gigatons of atmospheric carbon dioxide annually. The generation of biochar and bio-oil from the pyrolysis process is estimated to be economically feasible.

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Section: Upstream Integration Systemmentioning

confidence: 99%

Section: Upstream Integration Systemmentioning

confidence: 99%

Section: Tablementioning

confidence: 99%

Section: Tablementioning

confidence: 99%

Section: Tablementioning

confidence: 99%

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Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

et al. 2023

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Overview of Gaseous Biofuels Derived from Crops

Sobhangi,

Das,

Prakash

et al. 2024

Solid‐Gaseous Biofuels Production

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Energy recovery and waste valorization in a frozen food processing facility: a case study from Lazio, Italy

Di Fraia,

Di Meglio,

Massarotti

et al. 2024

Energy Efficiency

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Food and Agriculture Organization of the United Nations (FAO) estimates that food, beverage, and tobacco sector is currently responsible for about 30% of total world energy consumption and approximately the same percentage of food is wasted during its industrial transformation. Improving the sustainability of food processing is fundamental to reduce the environmental impact of this sector as well as to lower the disposal cost of industrial waste. The objective of this work is to propose an efficient and technically feasible solution for the management and energy recovery of residual biomasses and industrial processing by-products, such as sewage sludge produced by industrial wastewater treatment. The above solution is developed for a real frozen food factory operating in Lazio region (Italy) introducing a sewage sludge dryer and a gasifier to produce syngas. The software Aspen Plus is adopted to numerically simulate the gasification process, using a literature validated model, while the dryer and the already present combined heat and power (CHP) plant are dynamically modelled in TRNSYS environment. The results demonstrate that the proposed solution is feasible and attractive from both an environmental and an economic perspective. The Simple Pay Back of the investment is less than 3 years, while the Net Present Value stands at about 2.4 M€. Furthermore, the CO2 proposed system allows to save 179 t of equivalent CO2 emissions compared to the current system.

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Syngas biomethanation: Current state and future perspectives

Cited by 27 publications

References 124 publications

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

Overview of Gaseous Biofuels Derived from Crops

Energy recovery and waste valorization in a frozen food processing facility: a case study from Lazio, Italy

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