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The suitability of remediation structures the use of metal iron (FeO) has been significantly mentioned all through the beyond three decades. It has been installed that aqueous FeO oxidative dissolution isn’t always due to the presence of any contaminant. Instead, the reductive transformation of contaminants is a outcome of FeO oxidation. Yet researchers are nonetheless preserving that electrons from the metallic frame are concerned withinside the system of contaminant reduction. According to the electron performance idea, electrons from FeO must be redistributed to:
• Contaminants of concern (COCs),
• Herbal lowering agents (e.g., H2 O, O2 ), and/or reducible cocontaminants (e.g. NO3 ). The electron performance is described because the fraction of electrons from FeO oxidation that’s applied for the reductive variations of COCs. This idea is in frontal contradiction with the view that FeO isn’t always without delay concerned withinside the system of contaminant reduction. This communique recollects the universality of the idea that reductive methods found in remediation FeO/H2 O structures are mediated through primary (e.g., FeII, H/H2 ) and secondary (e.g., Fe3 O4 , inexperienced rusts) merchandise of aqueous iron corrosion. The essential assessment of the electron performance idea shows that it must be abandoned. Instead, studies efforts must be directed toward tackling the actual demanding situations for the layout of sustainable FeO-primarily based totally water remedy structures primarily based totally on essential mechanisms of iron corrosion
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