Concentrating Nitrogen Waste with Electrodialysis for Fertilizer Production.

ABSTRACT: Recovery of nitrogen from wastewater presents a unique opportunity to valorize waste and contribute to a more circular nitrogen economy. However, dilute solution separations are challenging for most state-of-the-art separations technologies. This often results in technologies having low concentration factors that result in low-value products (e.g., < 1 wt % N). Here, we demonstrate how a cascading electrodialysis system combined with a hollow fiber membrane contactor (ED+HFMC) system can achieve efficient recovery of ammonia from simulated centralized animal feeding operation (CAFO) wastewater. The integrated system achieved an overall concentration factor of ∼200× (∼40× in ED and ∼5× in HFMC). This resulted in a ∼10 wt % NH₄ ⁺-N fertilizer product. The specific energ

SUBMITTER: Tahmid M 

PROVIDER: S-EPMC11636197 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature