Testing new strategies to improve the recovery of phosphorus from anaerobically digested organic fraction of municipal solid waste
- Oliveira, Verónica
- Ferreira, Célia
- Labrincha, João
- Rocha, Joana
- Kirkelund, Gunvor M.
DOIAbstract
BACKGROUND: This work is focused on phosphorus (P) recovery from the anaerobically digested organic fraction of municipal solid waste (referred to as ‘digestate’) as a fertilizer. The main purpose was to propose and test modifications to the electrodialytic process that increase P extraction, improve the quality of the fertilizer by removing contaminants, and reduce hydraulic retention time to allow for smaller system footprints. Strategies tested were: (i) lowering the pH of the digestate suspension to <4.5 using the electrochemical reactions and enhance P solubilization from the waste; (ii) changing the configuration of the electrodialytic cell from three to two chambers; and (iii) stirring the sample to shorten the duration of the extrac...
Add to ORKG