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- W4367323675 abstract "Environmental legislation on waste management coupled with the potential for nutrients recovery are key factors encouraging the use of advanced treatment technologies to manage biosolids waste. In this context, phosphorus recovery from a sewage sludge treated by a wet oxidation process was carried out. High organic matter (up to 85% in COD) and Total Solids content (up to 75%) removal values were achieved at elevated temperature (up to 300 ºC) and pressure (up to 200 bar) conditions. The liquid and solid fractions found in oxidation process effluent contain amounts of phosphorus that can be recovered. This research aims to maximize its valorization in both liquid and solid fractions. In the liquid effluent, phosphorus was recovered (up to 90 mg P L-1) by chemical precipitation as struvite (MgNH4PO4∙6 H2O), a slow-release fertilizer. In this case, P recoveries greater than 95% were achieved. Also, the solid fraction, analyzed after filtration and drying (68 mg P gsolid-1), was treated by acid leaching, to achieve up to 60% phosphorus recovery. All phosphorus extracted was in orthophosphate form." @default.
- W4367323675 created "2023-04-29" @default.
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- W4367323675 date "2023-04-27" @default.
- W4367323675 modified "2023-09-29" @default.
- W4367323675 title "Circular Economy Model Through Phosphorus Recovery to Obtain Struvite from Sewage Sludge" @default.
- W4367323675 doi "https://doi.org/10.20944/preprints202304.1039.v1" @default.
- W4367323675 hasPublicationYear "2023" @default.
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