A simple mass balance tool to predict carbon and nitrogen fluxes in anaerobic digestion systems

Bareha, Y.; Affes, Rim; Moinard, Victor; Buffet, Julie; Girault, Romain

doi:10.1016/j.wasman.2021.08.020

Cited by 19 publications

(12 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Life cycle inventories of AD pathways (i.e. feedstock-dependent estimation of biogas and digestate production) were mainly based on similar works from Hamelin et al (2014) 57 , Bareha et al (2021) 58 and INRAE Transfert 59 . For digestate's return to soils, nitrogen's mineral fertilizer equivalent (MFE) and related emissions were estimated following the method of Brockmann et al (2018) 60 .…”

Section: Life Cycle Assessment Implementationmentioning

confidence: 99%

Upgrading agrifood co-products via solid fermentation yields environmental benefits under specific conditions only

2022

View full text Add to dashboard Cite

Solutions towards decoupling food production from arable land are increasingly promoted to alleviate food system's environmental impacts. It includes solid substrate fermentation (SSF), allowing to nutritionally enhance brous co-products. Yet, it remains unclear whether and to which extent SSF valorization pathways really improve environmental performances of agrifood co-products in comparison to current practices. Using a framework which combines process-based consequential life cycle analysis, uncertainty assessment and biomass resource potential estimation, we quantify and qualify implications of SSF nutritional enhancement through six selected case studies. When used to unlock food markets, SSF yields environmental bene ts for all impact categories. When used to unlock feed markets (low-value streams), SSF pathways are preferable options compared to energy valorization for most impacts except climate change. We show that the environmental impacts of novel food and feed are principally dependent on avoided crops and land use change accounting methods, these requiring further and systematic harmonization. Full TextAchieving generalized and signi cant changes of current food system is essential, not only to meet environmental targets, but also to comply with future food demand 1,2 . Therefore, reducing the dependence on crop importations by developing locally sourced commodities and enhancing the decoupling of food production from land are levers to mitigate food system's environmental impacts 3,4 . Among these solutions, "waste-to-nutrition" pathways, transforming organic wastes, residues and coproducts into edible ingredients, are increasingly promoted 5 . In this study, we assess the conditions under which fungal solid substrate fermentation (SSF) can sustainably be used as an alternative valorization option for agrifood co-products.SSF is based on the colonization of a solid substrate by a biological agent which, in the case of feed applications, allows to enhance or even unlock the nutritional value of brous feedstocks, mainly through lignocellulose degradation, proteins concentration and digestibility enhancement [6][7][8][9] . Applied to

show abstract

Section: Life Cycle Assessment Implementationmentioning

confidence: 99%

Upgrading agrifood co-products via solid fermentation yields environmental benefits under specific conditions only

2022

View full text Add to dashboard Cite

show abstract

“…They may, however, contribute to SOC storage in the case of repeated applications, as suggested by Tambone et al (2019). The application of solid digestate provided a limited amount of nutrients, mainly P and K, and a limited amount of total C and remaining C. In addition to the difference in the quantity applied, the comparison of raw, liquid, and solid digestates must be made cautiously; these digestates come from different digesters with different feedstocks and processes that may impact the digestate characteristics (Bareha et al 2021).…”

Section: Nutrients Supply and Potential C Storage At Usual Ratesmentioning

confidence: 99%

High Nitrogen Availability but Limited Potential Carbon Storage in Anaerobic Digestates from Cover Crops

Levavasseur

Roux²,

Kouakou

et al. 2022

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

Cover crops are increasingly used for biogas production, a renewable energy source, without competing for food production. The behavior of the resulting digestates after soil application is poorly understood, which prevents their efficient recycling in agriculture and the environmental assessment of their application. The objective of this study was to quantify the nitrogen availability and potential carbon storage of cover crop-issued digestates after soil application. A total of 10 raw digestates, 2 liquid phases, and 3 solid phases after phase separation were sampled. Main cover crops used in the sampled biogas plants were winter barley, rye, and maize. Classical physicochemical analyses and laboratory incubations to study their C and N mineralization were conducted. Despite a moderate C mineralization of raw and liquid digestates after 91 days, their initial limited carbon content induced, in the end, a low contribution to soil organic carbon (13 and 11 kg remaining C Mg −1 FM, respectively), similar to a pig slurry and much lower than a bovine manure. With a higher initial carbon content and lower C mineralization, the contribution of solid digestates to carbon storage could be higher if applied at a sufficient rate. Organic N mineralization of raw and liquid digestates was moderate, but their N availability was high (3 and 4 kg available N Mg −1 FM, respectively), thanks to their mineral nitrogen contents, similar again to a pig slurry. In contrast, that of solid digestate was almost null with a very low mineral N content and no organic N mineralization. Finally, all the digestates also brought significant amounts of P and K.

show abstract

“…Hoewel er kan worden aangenomen dat er behalve kool-en waterstof (C en H) weinig tot geen verliezen zijn in de vergister, zijn er weinig data beschikbaar waarin de samenstelling van de inputmaterialen wordt vergeleken met de samenstelling van het digestaat (Nkoa, 2014). Recentelijk is een model gepresenteerd waarmee kool-en stikstofstromen van organisch materiaal tijdens vergisting en opslag van het digestaat in beeld kunnen worden gebracht (Bareha et al, 2021).…”

Section: 2unclassified

Effecten van plantaardig digestaat op bodem, emissies en gewasopbrengst : Resultaten van een literatuurstudie, incubatieproef en potproef

Porre

Westerik

Velthof

et al. 2022

View full text Add to dashboard Cite

4 Resultaten 4.1 Karakterisering meststoffen 4.2 Incubatieproef 4.2.1 Lachgasemissies 4.2.2 CO 2 -emissies 4.3 Potproef 4.3.1 Lachgasemissies 4.3.2 Ammoniakemissies 4.3.3 Grasopbrengst 4.3.4 N-opname in gras 4.3.5 Bodemvruchtbaarheid 5 Discussie 5.1.1 Algemeen 5.1.2 Lachgasemissies 5.1.3 Ammoniakemissies 5.1.4 Grasopbrengst en kwaliteit 5.1.5 Bodemvruchtbaarheid 5.1.6 Plantaardig digestaat als meststof 5.1.7 Proefopzet 5.1.8 Aanbevelingen voor toekomstig onderzoek 6 Conclusies Literatuur Bijlage 1 Bodemeigenschappen Rapport: 3191 Projectnummer: 5200045725 Wageningen Environmental Research (WENR) hecht grote waarde aan de kwaliteit van zijn eindproducten.Een review van de rapporten op wetenschappelijke kwaliteit door een referent maakt standaard onderdeel uit van ons kwaliteitsbeleid.

show abstract

A simple mass balance tool to predict carbon and nitrogen fluxes in anaerobic digestion systems

Cited by 19 publications

References 49 publications

Upgrading agrifood co-products via solid fermentation yields environmental benefits under specific conditions only

Upgrading agrifood co-products via solid fermentation yields environmental benefits under specific conditions only

High Nitrogen Availability but Limited Potential Carbon Storage in Anaerobic Digestates from Cover Crops

Effecten van plantaardig digestaat op bodem, emissies en gewasopbrengst : Resultaten van een literatuurstudie, incubatieproef en potproef

Contact Info

Product

Resources

About