Biohythane production from food waste in a two-stage process: assessing the energy recovery potential
Abstract
Biohythane (hydrogen + methane) production in a two stage dark fermentation (DF) and anaerobic digestion (AD) process from food waste (FW) has been studied. This paper investigated the effect of operation temperature, i.e. mesophilic (34 °C) and thermophilic (55 °C) , on biohythane yield and total energy recovery carried out at the initial culture pH 5.5 and pH 7, respectively for DF and AD batch tests. The mesophilic DF tests gave a higher hydrogen yield of 53.5 (±4) mL H2/g VS added compared to thermophilic DF tests, i.e. 37.6 (±1) mL H2/g VS added. However, higher methane yields, i.e. 307.5 (± 10) mL CH4/g VS, were obtained at thermophilic AD tests compared to mesophilic AD, i.e. 276.5 (±4.3) mL CH4/g VS. The total energy recovery from thermophilic DF + AD was higher (11.4 MJ/kg VS) than the mesophilic (10.4 MJ/kg VS) combined process. Interestingly, the analysis of kinetic parameters of mesophilic tests, determined from the Modified Gompertz equation, showed that mesophilic DF had faster H2 production kinetics, which can be attributed to a faster adaptation of the heat-shocked inoculum used in the tests to the incubation temperature. However, thermophilic AD tests exhibited faster kinetics for methane production.
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Anaerobic digestion of food waste for methane production at mesophilic temperature (34 °C) generated 276.5 mL CH4/g VS, while 307.5 mL CH4/g VS was obtained at thermophilic temperature (55 °C).
“The anaerobic digestion of food waste for methane production at mesophilic temperature (34 °C) generated 276.5 mL CH4/g VS while 307.5 mL CH4/g VS was obtained at the thermophilic temperature of 55 °C [33].”
From Food Waste Biorefinery: Pathway towards Circular Bioeconomy (2021) · cites this paper as [33]
Dark fermentation using food waste at mesophilic temperature (34 °C) led to a biohydrogen yield of 53.5 mL H2/g VS, while 37.6 mL H2/g VS were obtained at thermophilic temperature (55 °C).
“Dark fermentation using food waste at the mesophilic temperature of 34 °C led to a biohydrogen yield of 53.5 mL H2/g VS, while 37.6 mL H2/g VS were obtained at the thermophilic temperature of 55 °C [33].”
From Food Waste Biorefinery: Pathway towards Circular Bioeconomy (2021) · cites this paper as [33]
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Food Waste Biorefinery: Pathway towards Circular Bioeconomy
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- Authors
- Ghimire, A., Luongo, V., Frunzo, L., Lens, P. N. L., Pirozzi, F., & Esposito, G.
- Affiliations
- Kathmandu University (NP)
- University of Naples Federico II (IT)
- IHE Delft Institute for Water Education (NL)
- Corresponding author
- Ghimire, Anish
- ORCID
- Venue
- Environmental Technology
- Publisher
- Informa UK Limited
- Published
- 2021-01-06
- Volume
- 43
- Issue
- 14
- Pages
- 2190-2196
- ISSN
- 0959-3330 (ISSN-L)
- 1479-487X
- OpenAlex
- W3114950732
- Cited by
- 37
- References
- 28
- Citations by year
- 2026: 1 · 2025: 6 · 2024: 13 · 2023: 7 · 2022: 6 · 2021: 4
- FWCI
- 2.25
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Erasmus Mundus Joint Doctorate Programme
- Topics
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Keywords
- biohythane, hydrogen production, methane production, food waste, dark fermentation, anaerobic digestion, two-stage process, thermophilic digestion, mesophilic digestion, energy recovery, temperature effects, pH effect, modified Gompertz model, production kinetics
- MeSH terms
- Anaerobiosis, Food, Hydrogen, Methane, Refuse Disposal, Bioreactors
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