Performance of Coupling an Aerobic Pre-treatment Prior to a Solid-State Anaerobic Digestion of Food Waste

Fisgativa, Henry; Debled, Marie; Trémier, Anne

doi:10.1007/s12649-019-00630-z

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…Considering the first day, the fresh samples (FW/0 days) presented higher methane production, followed by the samples stored for 4 and 7 days. The results corroborate other studies, which demonstrated that the pretreatment period with aeration, either passively or through forced aeration, reduces the impact of a high initial load on AD, promoting more stable reactors 24 . The average net cumulative specific methane production of food waste stored for 0, 4, and 7 days and the reference substrate (Fig.…”

Section: Resultssupporting

confidence: 90%

“…The results corroborate other studies, which demonstrated that the pretreatment period with aeration, either passively or through forced aeration, reduces the impact of a high initial load on AD, promoting more stable reactors. 24 The average net cumulative specific methane production of food waste stored for 0, 4, and 7 days and the reference substrate (Fig. 1b) showed that a 7 day pretreatment caused an increase in the cumulative specific methane production.…”

Section: Resultsmentioning

confidence: 91%

“…Another pretreatment identified as a facilitator for further methanization is continuous aeration treatment 23 . Compared with various types of mechanical, thermal or chemical treatments, it efficiently reduces biodegradable compounds, improves the production of hydrolytic enzymes and has low energy consumption 24 …”

Section: Introductionmentioning

confidence: 99%

“…23 Compared with various types of mechanical, thermal or chemical treatments, it efficiently reduces biodegradable compounds, improves the production of hydrolytic enzymes and has low energy consumption. 24 The main advantages of incorporating aeration in hydrolyticacidogenic reactors are the solubilization of organic substrates and improvement of the hydrolysis phase, which represents a positive effect on the methanogenic phase. 25 In the specific case of garage-type reactors, this can be even more important owing to the high concentration of solids in the substrate to be digested.…”

mentioning

confidence: 99%

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Determination of the biochemical methane potential of food waste after aerobic storage and aeration pretreatment

Oliveira

Léo

Forster‐Carneiro³

et al. 2022

Biofuels Bioprod Bioref

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Food waste represents a relevant fraction of municipal solid organic waste, and anaerobic digestion can be an eco-friendly alternative for sustainable management in a circular economy framework. One of the challenges to the implementation of anaerobic digestion is the availability of easily degradable compounds in the substrate, which can be solved by the application of pretreatment to increase methane production. In this study, the influence of aerobic storage time and forced continuous aeration pretreatment on the biochemical methane potential of food waste was evaluated. The results demonstrate an increase in the methane production concerning the total volatile solids (TVS) of food waste stored for 7 days (425 NmL CH 4 g −1 TVS) compared with fresh samples without pretreatment (375 NmL CH 4 g −1 TVS). The adoption of forced and continuous aeration pretreatment on food waste for 4 days produced 456 NmL CH 4 g −1 TVS for the leachate, 1.22-fold higher than that for the food waste without storage. In conclusion, the application of aeration pretreatment previous to anaerobic digestion can be an alternative to increase the methane potential from food waste.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Determination of the biochemical methane potential of food waste after aerobic storage and aeration pretreatment

Oliveira

Léo

Forster‐Carneiro³

et al. 2022

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

show abstract

“…However, results showed that during the first week of storage BMP values were very unstable. Another work, performed by Fisgativa et al [18], studied the effect of FW storage on the performance of a pilot-scale solid-state anaerobic digester (10 L) with leachate recirculation. Results showed that when using FW stored during 2 days before AD, the process was completely inhibited after 4 days of digestion.…”

Section: Introductionmentioning

confidence: 99%

Storage of Food Waste: Variations of Physical–Chemical Characteristics and Consequences on Biomethane Potential

Degueurce¹,

Picard²,

Peu³

et al. 2019

Waste Biomass Valor

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Food waste (FW) storage influences its physical-chemical characteristics and anaerobic digestion (AD) performance. In this work we present the results of two weeks long experiment where two types of FW were stored in dedicated cells (10 L and 300 L). Air was evenly flushed on the top surface of the substrates and then analyzed to identify and quantify possible gaseous emissions. Solid and liquid fractions were also periodically sampled and analyzed for total solid, volatile solid, ammonia and VFA contents. Results showed that storage initiated a hydrolysis process that modified the physical structure of FW, leading to the production of gases (CH 4 , CO 2 and ethanol) and a partly liquefied FW. Depending on experimental conditions, a fraction between 61 and 70% of the initial substrate remained solid at the end of the storage period. In the liquid phase, a large proportion of lactic acid was measured with maximum contents of 5.9 and 14.8 g/kg vs for the small-scale experiments with two different FW types and 3.0 g/kg vs for the large-scale experiment, leading to inhibition of the biomethane potential (BMP) tests. In conclusion, this work showed that when storage of FW is needed before AD, the optimal time recommended to keep a high methane yield is one week.

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Influence of Storage Time of Food Waste on the Substrate Characteristics and Energetic Potential Through Anaerobic Digestion

Parra-Orobio

Correa-Betancourt

Lozano-Messa

et al. 2022

Water Air Soil Pollut

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Performance of Coupling an Aerobic Pre-treatment Prior to a Solid-State Anaerobic Digestion of Food Waste

Cited by 5 publications

References 26 publications

Determination of the biochemical methane potential of food waste after aerobic storage and aeration pretreatment

Determination of the biochemical methane potential of food waste after aerobic storage and aeration pretreatment

Storage of Food Waste: Variations of Physical–Chemical Characteristics and Consequences on Biomethane Potential

Influence of Storage Time of Food Waste on the Substrate Characteristics and Energetic Potential Through Anaerobic Digestion

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