+Fe0, or [zero-valent iron](/wiki/zero_valent_iron), is elemental [iron](/wiki/iron) in its unoxidized, most reactive form. This highly active [metal](/wiki/metal) serves as a potent reducing agent, widely used in environmental remediation to break down contaminants.
+## See also
+- [Corrosion](/wiki/corrosion)
+- [Water Treatment](/wiki/water_treatment)
+- [Redox](/wiki/redox)
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