Bio-hydrogen and bio-methane production from food waste in a two-stage anaerobic digestion process with digestate recirculation

Algapani, Dalal E.; Qiao, Wei; Ricci, M.; Bianchi, Davide; Wandera, Simon M.; Adani, Fabrizio; Dong, Renjie

doi:10.1016/j.renene.2018.08.079

Cited by 148 publications

(25 citation statements)

References 34 publications

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“…Also, the lower hydrogen concentration was the upshot of higher toxicity inside the reactors due to the formation of Zn 2+ , Cu 2+ , and Ca 2+ during the decomposition of ZnO, CuO, and CaCO 3 respectively [45]. The increase in hydrogen generation with a simultaneous decrease in carbon dioxide concentration was reported by Algapani et al [46] in which a maximum hydrogen concentration of 64% was observed with a reduced carbon dioxide concentration of 32% through the multi-stage digestate recirculated anaerobic fermentation of food residue.…”

Section: Effect Of the Additives On Maximum Hydrogen And Carbon Dioximentioning

confidence: 78%

Effect of Various Potential Additives on Hydrogen Fermentation During the Co-Digestion of Food Waste and Cow Dung

Deheri¹,

Acharya²

2020

Preprint

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The effect of calcium peroxide (CaO2), zinc oxide (ZnO), copper oxide (CuO), and calcium carbonate (CaCO3) as additives during the anaerobic co-digestion of food waste and cow dung is experimentally investigated to enhance the hydrogen fermentation. The maximum concentration of hydrogen in the generated gas is found to be 26.43%, 21.67%, 17.64%, and 20.84% while the cumulative yield of hydrogen remains 114.1, 109.27, 104.87, and 107.38 mL g− 1 Total Solid (TS) with CaO2, ZnO, CuO, and CaCO3 respectively. The sample in which no additive is used (control) exhibits a maximum hydrogen concentration of 17% and a cumulative hydrogen generation of 101.57 mL g− 1 TS in the produced gas. Result reveals an enhancement in the hydrogen concentration up to 9.43% whereas the cumulative hydrogen yield is increased up to 11% with additives compared to the control sample. Overall the hydrogen fermentation can be significantly enhanced with the additives through the anaerobic co-digestion process.

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Section: Effect Of the Additives On Maximum Hydrogen And Carbon Dioximentioning

confidence: 78%

Effect of Various Potential Additives on Hydrogen Fermentation During the Co-Digestion of Food Waste and Cow Dung

Deheri¹,

Acharya²

2020

Preprint

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“…This result verifies that the two-stage AD system is easier to achieve operational stability for methane production at high OLR than single-stage AD system. It was reported that the effluent recycling not only diluted the acidic digestate in HR but also promoted protein degradation and NH 4 + -N releasing, and both of them will be benefit for pH balance in two-stage AD system [19].…”

Section: Discussionmentioning

confidence: 99%

Effects of Two-Stage Operation on Stability and Efficiency in Co-Digestion of Food Waste and Waste Activated Sludge

Liu

2019

Energies

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The two-stage anaerobic digestion (AD) technology attracts increasing attention due to its ability to collect both hydrogen and methane. A two-stage AD system feeding with food waste and waste activated sludge was investigated in order to achieve higher energy yield and organics removal. The two-stage process consists of a thermophilic H2-reactor and a mesophilic CH4-reactor, achieved the highest hydrogen and methane yields of 76.8 mL/g-VS and 147.6 mL/g-VS at hydraulic retention times (HRTs) of 0.8 d and 6 d, respectively. The co-digestion process in this study required much less external alkalinity to maintain the pH values than sole food waste digestion in the literature. Compared with the single-stage mesophilic methane AD process, the two-stage AD system had better performance on operation stability, biogas and energy yields, organics removal and chemical oxygen demand (COD) conversion at high organic loading rates (OLRs). According to the TA-cloning analysis, the dominant bacteria in H2-reactor was closely related to Clostridium sp. strain Z6 and species Thermoanaerobacterium thermosaccharolyticum. The dominant methanogens in two-stage and single-stage CH4-reactor were recognized as acetotrophic methanogens and hydrogenotrophic methanogens, respectively. The presence of the genus Nitrososphaera in the two CH4-reactors might contribute to the low NH4+-N concentration in digestate and low CO2 content in biogas.

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“…The results of this study revealed a methane production rate of 2.9 L‐CH 4 L −1 days −1 . The study also revealed that a recirculation ratio of 0.3 was found to be best for methane production (Algapani, Qiao, di Pumpo, et al, 2018; Algapani, Qiao, Ricci, et al, 2018). Hua Yan et al investigated biohydrogen and CH 4 production from FW in leach bed reactors under the scheme of acidogenic off‐gas reuse in a methanogenic reactor and reported CH 4 production of 0.42 L/g·volatile solids added (Hua Yan, Selvam, & Wong, 2019).…”

Section: Other Forms Of Bioenergy From Fwmentioning

confidence: 93%

“…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%

“…Over the years, various advancements in research focusing production of biogas have prompted the evolution of bio‐methanation technology with enhanced process efficiency (Dahiya & Joseph, 2015). Algapani et al investigated the biohydrogen and biomethane production from FW in a two‐stage anaerobic digestion process with digestate recirculation (Algapani, Qiao, di Pumpo, et al, 2018; Algapani, Qiao, Ricci, et al, 2018). The results of this study revealed a methane production rate of 2.9 L‐CH 4 L −1 days −1 .…”

Section: Other Forms Of Bioenergy From Fwmentioning

confidence: 99%

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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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Bio-hydrogen and bio-methane production from food waste in a two-stage anaerobic digestion process with digestate recirculation

Cited by 148 publications

References 34 publications

Effect of Various Potential Additives on Hydrogen Fermentation During the Co-Digestion of Food Waste and Cow Dung

Effect of Various Potential Additives on Hydrogen Fermentation During the Co-Digestion of Food Waste and Cow Dung

Effects of Two-Stage Operation on Stability and Efficiency in Co-Digestion of Food Waste and Waste Activated Sludge

Present scenario and future scope of food waste to biofuel production

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