Towards sustainable methane supply from local bioresources: Anaerobic digestion, gasification, and gas upgrading

Lodato, Concetta; Hamelin, Lorie; Tonini, Davide; Astrup, Thomas Fruergaard

doi:10.1016/j.apenergy.2022.119568

Cited by 15 publications

(5 citation statements)

References 51 publications

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“…While waste feedstocks such as roadside grass and agro-residues are a constrained resource, this study validated the views of Lodato et al (2022) that emissions from conventional management pathways are still higher when compared to anaerobic digestion as an intermediate step. Furthermore, we identified that, despite the trade-offs in environmental impacts between climate change potential and fossil resource use for CHP and biomethane recovery, it is evident that any form of biogas recuperation and valorization is imperative given the current political climate and its impact on EU energy security.…”

Section: Discussionsupporting

confidence: 65%

Exploring the environmental consequences of roadside grass as a biogas feedstock in Northwest Europe

Ravi

Souza

Adriaens

et al. 2023

Journal of Environmental Management

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Section: Discussionsupporting

confidence: 65%

Exploring the environmental consequences of roadside grass as a biogas feedstock in Northwest Europe

Ravi

Souza

Adriaens

et al. 2023

Journal of Environmental Management

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“…For the selected case studies, the LCI model estimates a producer gas yield ranging 2.1-2.5 Nm 3 .kg ww -1 input, 80-95% of input carbon converted into gases, a cold and hot gas e ciencies of respectively 68-80% and 80-94% and a gaschar production of 70-240 g.kg DM -1 input, which is aligned with benchmarked studies (see section SI.4.8). Most of the utilities, facilities and emissions indicators were derived from Ardolino and Arena, (2019), Thunman et al, (2018) and ecoinvent, (2022), while syngas post-treatment operations (including methanation, water conversion shift, electrolysis and steam reforming) were adapted from Lodato et al, (2022) and Megret et al, (2015).…”

Section: Microbial Proteins Production From Residual-based Gases: For...mentioning

confidence: 99%

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Javourez,

Tituta-Barna,

Hamelin

2024

Preprint

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Waste recovery technologies targeting the formulation of edible ingredients such as insects, microorganisms, or proteins extracts, are increasingly promoted to mitigate global environmental impacts. Yet, many conversion pathways exist, and little is known about the plausibility, the implications, and the environmental relevance of deploying them: a comparative modeling approach is missing. To this end, we reviewed the available data and literature documenting these emerging biorefineries and compiled it into six harmonized life cycle inventory (LCI) models estimating the forecasted performances of 16 representative “waste-to-nutrition” pathways in function of 18 input stream characteristics and 293 technological parameters. Illustrated on eleven case studies, the results quantify the untapped potential of transforming waste into novel food and feed and unravel the intrinsic trade-offs between their energy intensity, their yield and the biochemical composition of input streams. We show that several scenarios are possible to achieve France’s protein feed autonomy by scaling and combining different waste-to-nutrition pathways, but that each scenario would lead to different consequences on energy systems and on bioresources’ mobilization requirements. As provided, the LCI models capture the implications associated with these waste recovery technologies and are ready to support their prospective life cycle assessment.

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“…modeling granularity was limited to capture the main technology groups, and the marginal mix of suppliers was estimated following the heuristic approach commonly used in the eld of consequential LCA 34 . Fertilizing markets were considered as global, and the marginal suppliers limited to mineral/synthetic fertilizers 37 . The raw materials production and transportation to France were directly modeled with existing ecoinvent market activities.…”

Section: Identi Cation Of Marginal Suppliersmentioning

confidence: 99%

Prospective environmental mitigation potential of deploying waste-to-nutrition pathways

Javourez,

Tiruta-Barna,

Pizzol

et al. 2024

Preprint

Self Cite

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Transforming residual biomass into food and feed ingredients is increasingly promoted to mitigate the environmental impacts of food systems, but it remains unclear which, how and under which conditions implementing these strategies would effectively yield net impacts reduction. Here, the environmental performances of several waste-to-nutrition pathways and conventional waste management practices were assessed considering variability in process efficiencies, input composition and deployment contexts. The results show that stringent conditions such as the substitution of meat commodities, unconstrained availability of environmentally-efficient energy supplies, and substantial technological improvements are all required to secure the environmental benefits of waste-to-nutrition pathways compared to other waste valorization strategies. Yet, processing woody residues, manure and sludge into edible microbial biomass could become the best strategy to adopt if the environmental impacts of food systems keep exacerbating.

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Towards sustainable methane supply from local bioresources: Anaerobic digestion, gasification, and gas upgrading

Cited by 15 publications

References 51 publications

Exploring the environmental consequences of roadside grass as a biogas feedstock in Northwest Europe

Exploring the environmental consequences of roadside grass as a biogas feedstock in Northwest Europe

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Prospective environmental mitigation potential of deploying waste-to-nutrition pathways

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