First fertilizing-value typology of digestates: A decision-making tool for regulation - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Waste Management Année : 2019

First fertilizing-value typology of digestates: A decision-making tool for regulation

Résumé

Defined as the residue from anaerobic digestion (AD), digestate refers to a set of materials with varied biochemical compositions. The objective of this study was to establish a digestate typology according to its fertilizing-value with data from literature and internal unpublished databases. To establish a relatively big database allowing the application of advanced statistics, usual fertilizing-value parameters were used: dry matter, volatile solids, C/N, C/Organic-N, total N (TN), total ammoniacal nitrogen (TAN), TAN/TN, total P and total K. Statistical analysis was performed on a dataset of 91 raw digestates, 34 solid fractions and 25 liquid fractions after separation. The resulting typology outlined that fertilizing-values are linked to AD feedstock and process. As case study regulations, no digestate (without any post-treatment) fulfilled French standards and the latest European Union regulation proposal on fertilizers. Options to reach regulations' product categories were discussed according to the typology. For the first time, a digestate typology was established based on fertilizing value, which can be a useful tool enhancing digestate management and policy making.
Fichier non déposé

Dates et versions

hal-02627223 , version 1 (26-05-2020)

Identifiants

Citer

Felipe Guilayn, Julie Jimenez, J. L. Martel, M. Rouez, M. Crest, et al.. First fertilizing-value typology of digestates: A decision-making tool for regulation. Waste Management, 2019, 86, pp.67-79. ⟨10.1016/j.wasman.2019.01.032⟩. ⟨hal-02627223⟩
34 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More