Publicação
Dual recovery of mineral nutrients and organic compounds from swine slurry using electrodialytic process
| Resumo: | The transition towards a circular economy in agriculture critically depends on closing nutrient loops. Currently, farmers spend approximately 30% of their production costs on fertilizers alone. Traditional mineral fertilizers rely on extracting limited natural resources. This linear “take-make-dispose” model needs transformation, and animal waste streams offer a promising solution as valuable secondary nutrient sources. Recent innovations in waste valorization demonstrate how livestock byproducts can be transformed into valuable resources. The electrodialytic (ED) technology represents a breakthrough in this field, enabling the extraction of essential plant nutrients (N, P, Ca, K, Mg) from animal waste such as swine slurry to create bio-based fertilizer alternatives. This sustainable approach uses minimal electrical current combined with ion exchange membranes for selective nutrient concentration. While previous research focused primarily on mineral nutrient recovery, our study expanded the scope to examine organic compounds throughout the ED process. Using swine slurry in batch experiments, we achieved complete phosphorus recovery (100%) and substantial nitrogen recovery (57%). Importantly, we identified valuable organic compounds in the recovered solutions. This research demonstrates ED’s potential as a circular economy tool that not only recovers essential mineral nutrients but also concentrates beneficial organic compounds. The discovery of these bioactive molecules in the recovered matrix opens new possibilities for creating enhanced bio-based fertilizers, though their agricultural benefits require further field testing. This dual recovery of minerals and organic compounds represents a significant step toward more sustainable and resource-efficient agricultural practices. |
|---|---|
| Autores principais: | Vitória, Cláudia |
| Outros Autores: | Monteiro, M.C.H.; Anjos, O.; Gallardo, Eugénia; Oliveira, Verónica |
| Assunto: | Swine slurry Mineral nutrients |
| Ano: | 2026 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Instituto Politécnico de Castelo Branco |
| Idioma: | inglês |
| Origem: | Repositório Científico do Instituto Politécnico de Castelo Branco |
| Resumo: | The transition towards a circular economy in agriculture critically depends on closing nutrient loops. Currently, farmers spend approximately 30% of their production costs on fertilizers alone. Traditional mineral fertilizers rely on extracting limited natural resources. This linear “take-make-dispose” model needs transformation, and animal waste streams offer a promising solution as valuable secondary nutrient sources. Recent innovations in waste valorization demonstrate how livestock byproducts can be transformed into valuable resources. The electrodialytic (ED) technology represents a breakthrough in this field, enabling the extraction of essential plant nutrients (N, P, Ca, K, Mg) from animal waste such as swine slurry to create bio-based fertilizer alternatives. This sustainable approach uses minimal electrical current combined with ion exchange membranes for selective nutrient concentration. While previous research focused primarily on mineral nutrient recovery, our study expanded the scope to examine organic compounds throughout the ED process. Using swine slurry in batch experiments, we achieved complete phosphorus recovery (100%) and substantial nitrogen recovery (57%). Importantly, we identified valuable organic compounds in the recovered solutions. This research demonstrates ED’s potential as a circular economy tool that not only recovers essential mineral nutrients but also concentrates beneficial organic compounds. The discovery of these bioactive molecules in the recovered matrix opens new possibilities for creating enhanced bio-based fertilizers, though their agricultural benefits require further field testing. This dual recovery of minerals and organic compounds represents a significant step toward more sustainable and resource-efficient agricultural practices. |
|---|