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Anwendung Löslichkeit von Salzen

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Inhalt: Erläuterung der Rolle von Phosphat (PO₄³⁻) in Abwasser und die umweltbezogenen Herausforderungen. Erklärung, wie Fe³⁺ genutzt wird, um schwer lösliches Eisenphosphat zu bilden. Bezug zur Verwendung des abgeschiedenen Eisenphosphats als Dünger im Wirtschaftskreislauf. Quelle:...

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  • January 18, 2025
  • 1
  • 2024/2025
  • Class notes
  • Moch
  • 10 bis 13
  • Secondary school
  • Gesamtschule
  • 1
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Anwendung Löslichkeit von Salzen
In Abwasser befinden sich große Mengen an
Phosphat (PO43-). Dieses Phosphat darf nicht in die
Flüsse gelangen, da diese sonst eutrophieren.
Daher wird dem Abwasser Fe3+ zugesetzt. Dieses
bildet mit dem Phosphat schwer lösliches
Eisenphosphat. Dieses wird dann als Dünger auf die
Felder aufgetragen (Wirtschaftskreislauf).




Quelle: Riedel, anorganische Chemie, 3. Auflage

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