Stable biogas production from single-stage anaerobic digestion of food waste

Shamurad, Burhan; Sallis, Paul J.; Petropoulos, Evangelos; Tabraiz, Shamas; Ospina, Carolina; Leary, Peter; Dolfing, Jan; Gray, Neil

doi:10.1016/j.apenergy.2020.114609

Cited by 70 publications

(20 citation statements)

References 59 publications

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“…Focusing on Run1, the average pH of the steady phase was lower than those of the transient period (results not shown), but the values were always in the optimal range for dry-AD [9] and near the neutrality as also shown in an analogous studies [15,21]. This result showed an intrinsic buffer capacity of the system.…”

Section: Biogas Productionsupporting

confidence: 57%

Energy recovery from biowaste: influence of hydraulic retention time on biogas production in dry-anaerobic digestion

Rossi¹,

Pecorini²,

Iannelli³

2021

E3S Web Conf.

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The hydraulic retention time (HRT) is a key parameter in dry-anaerobic digestion to set during the reactor configuration in order to achieve the optimal biogas production. For this reason, the study compared the results of two experimental tests operating with an HRT of 23 and 14 days. During the tests, the feedstock was organic fraction of municipal solid waste with a solid content of 33% and the digester was a pilot-scale plug-flow reactor operating in thermophilic condition. The highest specific biogas production of 311.91 Nlbiogas kg-1 d-1 was achieved when the HRT was set to 23 days. On the contrary, the highest methane production rate of 1.43 NlCH4 l-1 d-1 was achieved for an HRT of 14 days. In addition, the volatile solids removal (49.15% on average) and the energy content o(4.8 MJ kg-1 on average) were higher for HRT 23 days than for HRT14 days. The results indicated that in dry-anaerobic digestion of organic fraction of municipal solid waste, 23 days is a suitable HRT for energy recovery.

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Section: Biogas Productionsupporting

confidence: 57%

Energy recovery from biowaste: influence of hydraulic retention time on biogas production in dry-anaerobic digestion

Rossi¹,

Pecorini²,

Iannelli³

2021

E3S Web Conf.

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“…Ruminococcaceae are important hydrolytic bacteria mainly degrading cellulose and hemicellulose to acetate and other VFAs [70]. Rikenellaceae is another important family frequently found in AD systems [67,71]. It typically occurs in the gastrointestinal tract of animals and humans and thrives anaerobically.…”

Section: Microbiological Analysismentioning

confidence: 99%

“…In this study, Rikenellaceae were almost exclusively found at the beginning of the experiment, while their abundance dramatically decreased until day 22. Dysgonomonadaceae are other common members of AD systems [71], thriving preferably between 35°C and 45°C. They utilize carbohydrates and peptides and ferment it to mainly acetate and propionate [74].…”

Section: Microbiological Analysismentioning

confidence: 99%

Can the addition of biochar improve the performance of biogas digesters operated at 45°C?

Masebinu

Fanoro

Insam

et al. 2021

Environmental Engineering Research

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Biogas from anaerobic digestion (AD) may contribute towards a green energy scene in the future. Despite many benefits, AD plant operators are still challenged by limitations of the technology. This study aimed at evaluating the effect of biochar addition to AD reactors operated at 45°C to optimize productivity, efficiency and stability of the process. Biochar is characterized by a large surface area and may therefore facilitate the creation of biofilms on the one hand and remove environmental contaminants on the other hand. Moreover, biochar may serve as pH control agent due to its alkaline properties, counteracting reactor acidification. Our results showed that the addition of biochar reduced efficiently the amount of H2S that initially occurred in the headspace during reactor start-up. Nevertheless, no impact on biogas- and methane yields was observed. This might be explained with an already well-working AD system without any severe disturbances, where the balancing nature of biochar did hardly count. Future studies, however, need to evaluate the effect on stressed systems. The microbiome analysis provided a detailed view of the microbial dynamics during the start-up phase, revealing Methanosarcina as dominant methanogen in the end. The addition of biochar did not alter the microbial community composition.

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“…The transesterification process was also used to convert waste beef tallow from tanneries and slaughterhouses [164], waste chicken fat chicken from chicken processing units [165], and swine fat from meat processing companies [166] to quality biodiesel at moderate operating conditions. Kitchen, garden, and food waste were used for bioethanol production through fermentation and the residue was subjected to AD for biogas production [167][168][169][170]. Waste activated sludge, waste peach pulp, and waste tires were also used as feedstocks in studies on the production of biohydrogen that explored fermentation and gasification technologies [171][172][173].…”

Section: Biofuel Production From Wastementioning

confidence: 99%

An Overview of the Classification, Production and Utilization of Biofuels for Internal Combustion Engine Applications

et al. 2021

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Biofuel, a cost-effective, safe, and environmentally benign fuel produced from renewable sources, has been accepted as a sustainable replacement and a panacea for the damaging effects of the exploration for and consumption of fossil-based fuels. The current work examines the classification, generation, and utilization of biofuels, particularly in internal combustion engine (ICE) applications. Biofuels are classified according to their physical state, technology maturity, the generation of feedstock, and the generation of products. The methods of production and the advantages of the application of biogas, bioalcohol, and hydrogen in spark ignition engines, as well as biodiesel, Fischer–Tropsch fuel, and dimethyl ether in compression ignition engines, in terms of engine performance and emission are highlighted. The generation of biofuels from waste helps in waste minimization, proper waste disposal, and sanitation. The utilization of biofuels in ICEs improves engine performance and mitigates the emission of poisonous gases. There is a need for appropriate policy frameworks to promote commercial production and seamless deployment of these biofuels for transportation applications with a view to guaranteeing energy security.

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Stable biogas production from single-stage anaerobic digestion of food waste

Cited by 70 publications

References 59 publications

Energy recovery from biowaste: influence of hydraulic retention time on biogas production in dry-anaerobic digestion

Energy recovery from biowaste: influence of hydraulic retention time on biogas production in dry-anaerobic digestion

Can the addition of biochar improve the performance of biogas digesters operated at 45°C?

An Overview of the Classification, Production and Utilization of Biofuels for Internal Combustion Engine Applications

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