A comprehensive review on the recent development of anaerobic sludge digestions: Performance, mechanism, operational factors, and future challenges

Results in Engineering, Journal Year: 2024, Volume and Issue: 22, P. 102292 - 102292

Published: May 22, 2024

After the industrial revolution, rapid population growth and burning fossil fuels led to achievement of massive amounts both liquid solid waste, which can pose numerous threats for all compartments environment. Anaerobic Digestion (AD) has been one most applicable techniques used during last few decades overcome unpleasant presence organic fraction waste sewage sludge (SS), as result this technique, biogas is main sources energy be produced. Therefore, application AD a solution biodegradable center attentions since significant are being produced every day. In regard comprehensive review was conducted know advantages, disadvantages, various that improve methane yield, insights on pretreatment methods, operating factors elucidate research gaps future opportunities. Also, in current study we discussed about conditions single-stage digesters, two-stage anaerobic co-digestion. Our first worked by yield from system.

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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State-of-the-art of biochar amended dark fermentative hydrogen production: A sustainable coupling of decarbonization pathways towards low carbon future

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 443, P. 141208 - 141208

Published: Feb. 10, 2024

Language: Английский

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Improving the efficiency of anaerobic digestion and optimising in-situ CO2 bioconversion through the enhanced local electric field at the microbe-electrode interface

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 304, P. 118245 - 118245

Published: March 1, 2024

Integrating microbial electrolysis cells and anaerobic digestion (MEC-AD) improves upon conventional for biomethane production due to the in-situ provision of electrochemically produced reducing power (such as hydrogen). However, electron transfer behaviour at microbe-electrode interface remains unclear. This study assessed micro-scale modification a carbonaceous bioelectrode, leading an enhanced local electric field, which was postulated stimulate electro-methanogenesis. The effectiveness incorporating electro-conductive biochar enhance interspecies also evaluated its potential boost production. findings revealed notable increase in yield methane content within biogas MEC-AD system, with improvements 96.8 % 32.5 %, respectively, compared when co-digesting grass silage cattle slurry. enhancement ascribed accumulation charges intensified field on surface etched biocathode, thereby facilitating interfacial transfer. Incorporating 10 g/L resulted 7.9 digestion. Overall, heightened energy by system (featuring modified graphite cathode) 6.5-fold additional electrical input. underscores catalytic significance electricity AD system.

Language: Английский

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Investigating the effects of whiskey-barrel derived biochar addition to anaerobic digestion at a distillery: A study on energy yield and system efficiency

Energy Conversion and Management X, Journal Year: 2024, Volume and Issue: 23, P. 100654 - 100654

Published: June 26, 2024

Closed-loop systems enable circular economy and applications in the food beverage sector to enhance decarbonisation. Whiskey distillation by-products are amenable anaerobic digestion thus facilitate resource recovery circularity. Furthermore, biochar derived from whiskey barrels can be used as a carbonaceous additive within biomethane production. In this paper, produced pyrolysis of discarded at 300 °C, was shown production by up 15 %. A kinetic analysis revealed that reduced lag time 42 The mass energy balance integrated digestion-pyrolysis system evaluated. overall efficiency assessed 68 % all input (expressed on primary basis); utilisation renewable electricity could increase 71 Biochar provide decarbonisation pathway for distilleries but may constrained total available.

Language: Английский

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Energy and exergy assessment of anaerobic digestion process for ammonia synthesis: Toward a sustainable water-energy-food nexus

Biomass and Bioenergy, Journal Year: 2025, Volume and Issue: 197, P. 107792 - 107792

Published: March 18, 2025

Language: Английский

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Selecting optimal algal strains for robust photosynthetic upgrading of biogas under temperate oceanic climates

Biotechnology Advances, Journal Year: 2025, Volume and Issue: unknown, P. 108581 - 108581

Published: April 1, 2025

Language: Английский

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Biochar-synergy in anaerobic digestion of animal wastes for total pollution control and bioenergy production: A sustainable integrated perspective

Cleaner Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 100177 - 100177

Published: April 1, 2025

Language: Английский

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Biohythane production via anaerobic digestion process: fundamentals, scale-up challenges, and techno-economic and environmental aspects

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(38), P. 49935 - 49984

Published: Aug. 1, 2024

Abstract Biohythane, a balanced mixture comprising bioH 2 (biohydrogen) and bioCH 4 (biomethane) produced through anaerobic digestion, is gaining recognition as promising energy source for the future. This article provides comprehensive overview of biohythane production, covering production mechanisms, microbial diversity, process parameters. It also explores different feedstock options, bioreactor designs, scalability challenges, along with techno-economic environmental assessments. Additionally, discusses integration into waste management systems examines future prospects enhancing efficiency applicability. review serves valuable resource researchers, engineers, policymakers interested in advancing sustainable renewable solution.

Language: Английский

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Mass flow and microbial shifts in recirculated two-phase anaerobic digestion for biohythane production: Effect of hydraulic retention time

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 468, P. 143092 - 143092

Published: July 6, 2024

Biohythane, the promising gaseous biofuel, can be produced by recirculated two-phase anaerobic digestion (R-TPAD). The effect of hydraulic retention time (HRT) as 30, 20 and 10 days on biohythane production via R-TPAD (recirculation ratio = 0.4) was investigated with co-digestion food waste paper waste. results showed that HRTs 30 maintained stable performance for but HRT led to final decrease in biogas production. failure end attributed wash-out microbes. removal efficiencies COD carbohydrates were decreased short while VS it remained relatively at about 75.7 ± 4.0%. All through operation, acidogenic phase methanogenic separated stably butyrate pathway dominant hydrogen fermentation first stage. microbial community stage reached highest diversity when total days, where rate highest. genera Lactobacillus Caproiciproducens kept dominating dark phase, Ruminococcus Methanosarcina decreasing phase. yields 411 mL/g-VSfed, 332 mL/g-VSfed 253 respectively, H2 contents 18.4%, 14.7% 8.8%, respectively.

Language: Английский

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