From Biogas to Biomethane: An In-Depth Review of Upgrading Technologies That Enhance Sustainability and Reduce Greenhouse Gas Emissions

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(6), P. 2342 - 2342

Published: March 11, 2024

Renewable energies present an opportunity to enhance energy security, reduce dependence on imports, and lower greenhouse gas emissions. Natural gas, viewed as a transitional fuel from coal renewables, lacks reliable environmental sustainability does not contribute EU independence. Recently, biomethane has been gaining attention alternative natural gas. Obtained purified or “upgraded” biogas, it offers economic advantages. Several developed technologies, including absorption, adsorption, membrane separation, cryogenic are commercially available. However, those energy- resource-intensive. In this context, review aims examine the recent advancements in biogas upgrading, particularly physical, chemical, biological pathways. It focuses CO2 removal and/or conversion methane, offering updated overview for future studies. The technologies classified based separation method (by phase addition, by solid agent, creation, process), analysis of each category is conducted. discussion covers characteristics, process complexity, research prospects sustainable technologies. This highlights potential upgrading contributing development, increasing achieving reduction goals that aligned with targets.

Language: Английский

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Enhancing microbial viability with biochar for increased methane production during the anaerobic digestion of chicken manure

Fuel, Journal Year: 2024, Volume and Issue: 368, P. 131603 - 131603

Published: March 28, 2024

This investigation explores the effects of integrating acid-alkali treated biochar into anaerobic digestion chicken manure. Digesters containing manure with addition exhibited an 8.4-fold improvement in methane production compared to untreated digesters. In addition, porous structure promoted microbial acclimation, facilitated direct interspecies electron transfer, and provided anchoring points for immobilisation. Anaerobic digesters amended also demonstrated increased chemical oxygen demand removal, up 81.8 %, maintained lower total ammonia concentrations (2,478 mg/L) levels control reactors (4418 mg/L). terms community, propidium monoazide minimised errors live population estimation, providing new insights capacity shield microbes from stress. These findings highlight biochar's quantitative benefits, emphasising its potential enhancing production, mitigating stress, promoting resilience digestion.

Language: Английский

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Effects of Bacillus subtilis Bioaugmentation on Hydrogen-Methane Production and Microbial Community in a Two-Stage Anaerobic Digestion System

Waste and Biomass Valorization, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 25, 2025

Language: Английский

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Enhanced hydrogen and methane production from date fruit wastes using semi continuous two-stage anaerobic digestion process with increasing organic loading rates

Process Safety and Environmental Protection, Journal Year: 2023, Volume and Issue: 174, P. 267 - 275

Published: April 11, 2023

Language: Английский

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Advancing two-stage hydrogen production from corn stover via dark fermentation: Contributions of thermally modified maifanite to microbial proliferation and pH self-regulation

Bioresource Technology, Journal Year: 2024, Volume and Issue: 403, P. 130853 - 130853

Published: May 15, 2024

Language: Английский

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Green energy breakthroughs: Harnessing nano-catalysts and enzymatic catalysts for bioenergy generation

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 215, P. 118527 - 118527

Published: April 27, 2024

Language: Английский

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Investigation into the effects of different recycled magnetic additives on anaerobic co-digestion of sludge and straw

Fuel, Journal Year: 2023, Volume and Issue: 358, P. 130245 - 130245

Published: Nov. 2, 2023

Language: Английский

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Enhancement effects and mechanisms of iron filings on the performance of anaerobic co-digestion of hulless barley straw and pig manure

Fuel, Journal Year: 2024, Volume and Issue: 367, P. 131425 - 131425

Published: March 13, 2024

Language: Английский

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Effects of biochar, granular activated carbon, and magnetite on the electron transfer of microbials during the anaerobic digestion process: Insights into nitrogen heterocyclic compounds degradation

Fuel, Journal Year: 2023, Volume and Issue: 358, P. 130079 - 130079

Published: Oct. 16, 2023

Language: Английский

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Adding Granular Activated Carbon and Zerovalent Iron to the High-Solid Anaerobic Digestion System of the Organic Fraction of Municipal Solid Waste: Anaerobic Digestion Performance and Microbial Community Analysis

ACS Omega, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 12, 2024

Anaerobic digestion (AD) performance and microbial dynamics were investigated in a high-solid anaerobic (HSAD) system of the organic fraction municipal solid waste (OFMSW). 1, 5, 10, 15% (w/w, dry weight OFMSW) granular activated carbon (GAC) zerovalent iron (ZVI) added to HSAD system. The results showed that adding ZVI GAC can improve methane yield OFMSW. Notably, R-(GAC + ZVI) exhibited highest cumulative 343.0 mL/gVS, which was 57.1% higher than R-control. At genus level, dominant bacteria included norank_f__norank_o__MBA03, norank_f__norank_o__norank_c__norank_p__Firmicutes, Fastidiosipila, norank_f__Rikenellaceae, Sphaerochaeta, while Methanoculleus, Methanobacterium, Methanosarcina archaea. relative abundance norank_f__norank_o__norank_c__norank_p__Firmicutes 30.8% for ZVI), 71.4% Methanoculleus Methanobacterium R-control group accounted 79.0 90.8% total archaeal abundance, respectively. Additionally, 10.6% (1.1%). After addition ZVI, electron transfer capacity enhanced, resulting promoted production. Thus, simultaneous be an effective strategy promote

Language: Английский

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