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

Applied Sciences, Год журнала: 2024, Номер 14(6), С. 2342 - 2342

Опубликована: Март 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.

Язык: Английский

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

Fuel, Год журнала: 2024, Номер 368, С. 131603 - 131603

Опубликована: Март 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.

Язык: 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, Год журнала: 2025, Номер unknown

Опубликована: Янв. 25, 2025

Язык: 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, Год журнала: 2023, Номер 174, С. 267 - 275

Опубликована: Апрель 11, 2023

Язык: 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, Год журнала: 2024, Номер 403, С. 130853 - 130853

Опубликована: Май 15, 2024

Язык: Английский

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

Industrial Crops and Products, Год журнала: 2024, Номер 215, С. 118527 - 118527

Опубликована: Апрель 27, 2024

Язык: Английский

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

Fuel, Год журнала: 2023, Номер 358, С. 130245 - 130245

Опубликована: Ноя. 2, 2023

Язык: 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, Год журнала: 2024, Номер 367, С. 131425 - 131425

Опубликована: Март 13, 2024

Язык: 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, Год журнала: 2023, Номер 358, С. 130079 - 130079

Опубликована: Окт. 16, 2023

Язык: 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, Год журнала: 2024, Номер unknown

Опубликована: Янв. 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

Язык: Английский

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