Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue (Article De Synthèse) Chemical Engineering Journal Année : 2023

Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review

Résumé

Sewage sludge represents a renewable source of organic carbon and nutrients such as nitrogen (N), potassium (K), and phosphorus (P) that can be valorised through the recovery of energy carriers (e.g. biofuels) and fertilizers (N, K, and P precipitates). This review analyses>60 recent studies that have investigated P recovery potential from sewage sludge by hydrothermal processes. The effect of process parameters such as temperature, residence time, pressure, solid-to-liquid ratio, and addition of additives on P conversion pathways has been investigated by a critical discussion of the results published in the literature. Results show that temperature is the most influential parameter for P speciation and repartition: the increase in temperature appears to promote the increase in solid P recovery yield, the mineralization of organic P, and the conversion of non-apatitic P into apatitic P. The increase in reaction time has similar effects as temperature, but to a lesser extent. Solid P recovery yield and apatitic P fraction can be enhanced by increasing the medium alkalinity and by adding Ca-containing reactants. Non-apatitic P fraction can be increased by lower medium alkalinity, and by the addition of Fe-and Alcontaining reactants. The results of this review provide to researchers and practitioners in the field of sewage sludge management key elements for the best operation of hydrothermal reactors to improve the recovery of P and biofuels. Finally, some new research perspectives and technical challenges are proposed to improve the knowledge and the scaling up of the technology.
Fichier principal
Vignette du fichier
Tangredi et al., 2023 Chem. Eng. J. 463, 142342_V2.pdf (4.51 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04303018 , version 1 (23-11-2023)

Identifiants

Citer

Antonello Tangredi, Cristian Barca, Jean-Henry Ferrasse, Olivier Boutin. Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review. Chemical Engineering Journal, 2023, 463, pp.142342. ⟨10.1016/j.cej.2023.142342⟩. ⟨hal-04303018⟩
21 Consultations
66 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More