Valorization of Anaerobic Liquid Digestates Through Membrane Processing and Struvite Recovery-The Case of Dairy Effluents.

ABSTRACT: An integrated process scheme is developed for valorizing filtered liquid digestates (FLD) from an industrial anaerobic digestion (AD) plant treating dairy-processing effluents with relatively low nutrient concentrations. The process scheme involves FLD treatment by nanofiltration (NF) membranes, followed by struvite recovery from the NF-retentate. An NF pilot unit (designed for this purpose) is combined with a state-of-the-art NF/RO process simulator. Validation of simulator results with pilot data enables reliable predictions required for scaling up NF systems. The NF permeate meets the standards for restricted irrigation and/or reuse. Considering the significant nutrient concentrations in the NF retentate (i.e., ~500 mg/L NH4-N, ~230 mg/L PO4-P), struvite recovery/precipitation is invest

SUBMITTER: Karanasiou AC 

PROVIDER: S-EPMC12300007 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature