Robust magnetic vivianite recovery from digested sewage sludge: Evaluating resilience to sludge dry matter and particle size variations.

Autor: Nguyen H; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, the Netherlands; Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands. Electronic address: vietha3112@gmail.com., Prot T; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, the Netherlands., Wijdeveld W; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, the Netherlands., Korving L; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, the Netherlands., Dugulan AI; Department of Radiation Science and Technology, Delft University of Technology, Mekelweg 15, 2629, JB, Delft, the Netherlands., Brück E; Department of Radiation Science and Technology, Delft University of Technology, Mekelweg 15, 2629, JB, Delft, the Netherlands., Haarala A; Kemira Oyj, R&D and Technology, EMEA, Luoteisrinne 2, 02270, Espoo, Finland., van Loosdrecht MCM; Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands.
Jazyk: angličtina
Zdroj: Water research [Water Res] 2024 Nov 15; Vol. 266, pp. 122407. Date of Electronic Publication: 2024 Sep 07.
DOI: 10.1016/j.watres.2024.122407
Abstrakt: Phosphorus recovery via vivianite extraction from digested sludge has recently gained considerable interest. The separation of vivianite was demonstrated earlier at the pilot scale, and operational parameters were optimized. In this study, we tested the robustness of this technology by changing the sludge characteristics, such as dry matter, and via that, sludge viscosity, and vivianite particle size. It was proven that the main factor influencing recovery was the concentration of vivianite in the feed. The technology can extract vivianite even when the sludge has higher dry matter (1.8% - 3.3%) and, therefore, higher viscosity. Smaller vivianite sizes (< 10 µm) can still be recovered but at a lower rate. This made magnetic separation applicable to a wide range of wastewater treatment plants.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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