Understanding the anaerobic biodegradability of food waste: Relationship between the typological, biochemical and microbial characteristics

Fisgativa, Henry; Trémier, Anne; Roux, Sophie; Bureau, Chrystelle; Dabert, Patrick

doi:10.1016/j.jenvman.2016.11.058

Cited by 79 publications

(33 citation statements)

References 35 publications

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“…The highest concentration recorded for the first trial (10 L-FW1) was 5.9 g/kgVS in at day 6, 14.8 g/kgVS in at day 13 for the experiment 2 at small-scale (10 L-FW 2 ) and 3.0 g/kgVS in at day 2. The production of lactic acid during storage of FW is due to the initial presence of lactic acid bacteria (LAB) in the substrate [31] and was already reported in several studies [5,30,32]. This suggests that lactic acid and VFA are also present in the solid fraction of stored FW, which is consistent with low pH of the solid content measured at the end of all experiments.…”

Section: Liquid Phasesupporting

confidence: 88%

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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Section: Liquid Phasesupporting

confidence: 88%

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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“…The total solid content of FW was 30%, which lies within the range stated in the literature, although it is among the highest reported [39][40][41][42]. The high VS/TS ratio (95.6%) highlights the high organic transformation potential.…”

Section: Characteristics Of Substratessupporting

confidence: 74%

Impact of Nanoscale Magnetite and Zero Valent Iron on the Batch-Wise Anaerobic Co-Digestion of Food Waste and Waste-Activated Sludge

Kassab

Khater

Odeh

et al. 2020

Water

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As a potential approach for enhanced energy generation from anaerobic digestion, iron-based conductive nanoparticles have been proposed to enhance the methane production yield and rate. In this study, the impact of two different types of iron nanoparticles, namely the nano-zero-valent-iron particles (NZVIs) and magnetite (Fe3O4) nanoparticles (NPs) was investigated, using batch test under mesophilic conditions (35 °C). Magnetite NPs have been applied in doses of 25, 50 and 80 mg/L, corresponding to 13.1, 26.2 and 41.9 mg magnetite NPs/gTS of substrate, respectively. The results reveal that supplementing anaerobic batches with magnetite NPs at a dose of 25 mg/L induces an insignificant effect on hydrolysis and methane production. However, incubation with 50 and 80 mg/L magnetite NPs have instigated comparable positive impact with hydrolysis percentages reaching approximately 95% compared to 63% attained in control batches, in addition to a 50% enhancement in methane production yield. A biodegradability percentage of 94% was achieved with magnetite NP doses of 50 and 80 mg/L, compared to only 62.7% obtained with control incubation. NZVIs were applied in doses of 20, 40 and 60 mg/L, corresponding to 10.8, 21.5 and 32.2 mg NZVIs/gTS of substrate, respectively. The results have shown that supplementing anaerobic batches with NZVIs revealed insignificant impact, most probably due to the agglomeration of NZVI particles and consequently the reduction in available surface area, making the applied doses insufficient for measurable effect.

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“…Biochemical methane potential (BMP) was determined as described by Fisgativa et al [1] . Measurements were made in triplicate using hermetically closed 572 ml-bottles, mixing 40 ml of inoculum and 1–95 g of liquid substrate or ground substrate in the case of solid sample, to raise a 1 gVS inoculum:1 gVS substrate ratio.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“…The dried fraction used to determine lipids content was also used for the modified Van Soest fibres analysis method, as described by Fisgativa et al [1] . In this method, successive extractions with neutral detergent (NDF), acid detergent (ADF) and lignin acid detergent (ADL) are used to discretise the non-soluble organic matter into 5 fractions: water soluble OM (SOL W ) (determined as the difference between water extracted VS and raw waste VS), soluble in neutral detergent (SOL NDF ), hemicellulose-like OM (HEM), cellulose-like OM (CEL) and lignin-like OM (LIG).…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Physico-chemical, biochemical and nutritional characterisation of 42 organic wastes and residues from France

Fisgativa¹,

Marcilhac²,

Girault³

et al. 2018

Data in Brief

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The data presented in this article regroup characterisation of organic matter and nutritional composition of 42 organic wastes and residues usually used as substrates for anaerobic digestion. Those wastes have different origins from agro-industrial, agricultural and urban sectors in France including: algae, slaughterhouse waste, fat, food waste, fruits and vegetables residues, green waste, slurry, manure, wastewater treatment plant sludge and agricultural residues. The properties of organic matter are distinguished between global parameters (pH, total solids, volatile solids, COD and BMP), organic matter fractionation (biochemical and Van Soest) and the main nutrients content (N, P, K, Mg, Ca and S).

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Understanding the anaerobic biodegradability of food waste: Relationship between the typological, biochemical and microbial characteristics

Cited by 79 publications

References 35 publications

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

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

Impact of Nanoscale Magnetite and Zero Valent Iron on the Batch-Wise Anaerobic Co-Digestion of Food Waste and Waste-Activated Sludge

Physico-chemical, biochemical and nutritional characterisation of 42 organic wastes and residues from France

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