Long-term bio-H2 and bio-CH4 production from food waste in a continuous two-stage system: Energy efficiency and conversion pathways

Algapani, Dalal E.; Qiao, Wei; Pumpo, Francesca di; Bianchi, David; Wandera, Simon M.; Adani, Fabrizio; Dong, Renjie

doi:10.1016/j.biortech.2017.05.164

Cited by 66 publications

(16 citation statements)

References 33 publications

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“…Hydrogen production accounted for 20-12% and 15-5% of FW and GW soluble COD, respectively (Table 2), which represent only 9-5% (FW) and 3-1% (GW) of the total COD. Similar percentages of total COD conversion to hydrogen have been previously reported from fermentation of FW (Liu et al, 2013;Algapani et al, 2018;Yun et al, 2018). A significant fraction of the energy content of the substrate is generally kept in the end-products from the H 2 fermentation, which justifies the interest in applying two- (b) Represents the relation between the amount of hydrogen and acetate produced, converted to its equivalent COD, and the amount of soluble COD (CODs) or total COD (CODt) added to each assay.…”

Section: Parameterssupporting

confidence: 87%

“…acetate and lactate (Table 4), was higher in the assays with GW:FW 90:10%, in which the sum of these products accounted for 49% and 12% of the soluble and total COD added (Table 4). In this case, and also in the assay with GW:FW 100:0%, the hydrogen produced represented 13% of the soluble COD and 3% of the total COD, as previously reported (Liu et al, 2013;Algapani et al, 2018;Yun et al, 2018). These results point that co-fermentation of the wastes was not complete, still remaining non-converted soluble COD and non-hydrolyzed waste in the end of the experiment.…”

Section: Hydrogen Production By Co-fermentation Of Fw and Gwsupporting

confidence: 85%

“…The efficient conversion of organic wastes into biohydrogen and methane, applying two step processes, has been reported by several authors. For example, hydrogen and methane production yields (expressed relatively to the waste VS added) of 105 ± 55 mL g −1 and 526 ± 137 mL g −1 , respectively, were attained by Algapani et al (2018) from FW in a continuous thermophilic (55°C)-mesophilic (37°C) two-stage system. Hydrogen and methane accounted for 4% and 55% of the total COD in FW, respectively.…”

Section: Biomethane Production Assaysmentioning

confidence: 99%

“…In the last years, several studies using FW or GW for biohydrogen production were performed (Cheng et al, 2011;Pan et al, 2013;Yasin et al, 2013;Nissilä et al, 2014;Abreu et al, 2016;Algapani et al, 2018;Ghimire et al, 2018), but the potential utilization of both wastes simultaneously by co-fermentation was not evaluated. In GW the fermentable sugars are present in complex and hardly digestible forms, while FW is an easier biodegradable substrate which is also a source of nitrogen (that is lacking in GW).…”

Section: Introductionmentioning

confidence: 99%

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Garden and food waste co-fermentation for biohydrogen and biomethane production in a two-step hyperthermophilic-mesophilic process

Abreu

Tavares

Alves

et al. 2019

Bioresource Technology

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A B S T R A C TCo-fermentation of garden waste (GW) and food waste (FW) was assessed in a two-stage process coupling hyperthermophilic dark-fermentation and mesophilic anaerobic digestion (AD). In the first stage, biohydrogen production from individual substrates was tested at different volatile solids (VS) concentrations, using a pure culture of Caldicellulosiruptor saccharolyticus as inoculum. FW concentrations (in VS) above 2.9 g L −1 caused a lag phase of 5 days on biohydrogen production. No lag phase was observed for GW concentrations up to 25.6 g L −1 . In the co-fermentation experiments, the highest hydrogen yield (46 ± 1 L kg −1 ) was achieved for GW:FW 90:10% (w/w). In the second stage, a biomethane yield of 682 ± 14 L kg −1 was obtained using the end-products of GW:FW 90:10% co-fermentation. The energy generation predictable from co-fermentation and AD of GW:FW 90:10% is 0.5 MJ kg −1 and 24.4 MJ kg −1 , respectively, which represents an interesting alternative for valorisation of wastes produced locally in communities. (M.M. Alves), acavaleiro@deb.uminho.pt (A.J. Cavaleiro), alcina@deb.uminho.pt (M.A. Pereira).

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Section: Parameterssupporting

confidence: 87%

Section: Hydrogen Production By Co-fermentation Of Fw and Gwsupporting

confidence: 85%

Section: Biomethane Production Assaysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Garden and food waste co-fermentation for biohydrogen and biomethane production in a two-step hyperthermophilic-mesophilic process

Abreu

Tavares

Alves

et al. 2019

Bioresource Technology

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“…Silva et al obtained a maximum hydrogen yield (180 mlH 2 /gVS) was obtained at 5% glycerol from mesophilic anaerobic codigestion of FW and crude glycerol (Silva, Oliveira, Mahler, & Bassin, 2017). Algapani et al established continuous H 2 (4%) and CH 4 (55%) production from canteen FW in a continuous two‐stage system (Algapani, Qiao, di Pumpo, et al, 2018; Algapani, Qiao, Ricci, et al, 2018). Pu et al recorded a high hydrogen yield (75.3 ml/g‐VS) from heat‐treated food in acidogenic fermentation (Pu et al, 2019).…”

Section: Biohydrogen Production From Fwmentioning

confidence: 99%

Present scenario and future scope of food waste to biofuel production

Dhiman

Mukherjee

2020

J Food Process Engineering

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Food waste is the outcome of different food processing practices that have not been reused and are disposed of as waste. Food wastes are rich in a wide variety of organic constituents including starches, proteins, oils, fats, phosphates, nutrients, amino acids, and natural acids. Food waste is a zero‐value and nonconsumable resource. In this context, the valorization of food waste to different sorts of biofuels, for example, biodiesel, bioethanol, biohydrogen, bio‐oil, biochar, and biomethane by employing well‐structured and efficient valorization technologies can be an attractive and viable approach to counter the current global energy crisis and in establishing a sustainable bioeconomy. This type of food waste management not only resolves the serious pollution problem but also helps to reduce the dependency of the energy sector on fossil fuels. This review discusses the characteristics of food waste, common strategies for food waste management, food waste as a feedstock, biofuels as a renewable energy source, valorization of food waste to various types of biofuels, microbes‐assisted valorization of food waste, biofuels and bioeconomy, and future scope and challenges in the valorization of food waste to biofuels.

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Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste

Cremonez,

Teleken,

Meier

et al. 2024

Env Prog and Sustain Energy

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The objective of this work was to evaluate anaerobic digestion processes of mixtures of cassava starch‐based polymer (CSP) and papaya fruit pulp waste (PPW) at different ratios, with physical division of digestion stages. Acidogenic phase (phase 1) was conducted under temperature of 45°C and hydraulic retention time of 96 h. Monitoring reactors with destructive samples were subjected to the same conditions in order to assess the initial degradation profile of the substrates. The methanogenic phase (phase 2) was conducted under temperature of 37°C and the hydraulic retention time was defined as equal to the time the biogas production ceased. The results showed that the CSP/PPW mixtures presented interesting synergism and high biogas production potential under the conditions studied. The treatment with CSP/PPW at the ratio of 75/25 showed the best digestion performances in the phase 1. The highest CSP to PPW ratios showed satisfactory results for accumulated biogas productions (5955.58 mL) and for maximum biogas production rate (25.64 mL gVS−1 day−1) in the phase 2.

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Long-term bio-H2 and bio-CH4 production from food waste in a continuous two-stage system: Energy efficiency and conversion pathways

Cited by 66 publications

References 33 publications

Garden and food waste co-fermentation for biohydrogen and biomethane production in a two-step hyperthermophilic-mesophilic process

Garden and food waste co-fermentation for biohydrogen and biomethane production in a two-step hyperthermophilic-mesophilic process

Present scenario and future scope of food waste to biofuel production

Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste

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