Which metal is most severely corroded by acidic sulfate wastewater

2026-07-24View Original

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In acidic sulfate wastewater environments, the corrosion of iron (ordinary carbon steel) is the most severe. Iron has reactive chemical properties; it reacts directly in acidic sulfate waste streams: Fe + 2H+ → Fe2+ + H2↑. It has a high corrosion rate, and at room temperature it dissolves rapidly to form ferrous salts. It is the most corrosive common metal in such waste streams. Compared to other metals: aluminum corrodes rapidly in acidic sulfates, but the oxide film formed provides temporary protection under certain conditions ； Copper has a higher potential than hydrogen, and its corrosion rate is much lower than that of iron in the absence of additional oxidants ； Metals such as titanium and chromium can form stable passivation films in this environment, resulting in almost no significant corrosion.

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Which metal is most severely corroded by acidic sulfate wastewater

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