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Aluminum VS. Ethanol

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PAN

PAN

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Do you ever use aluminum as internal floating roof in ethanol storage tank? Please comment about its corrosion resistance for this application.
 
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Aluminum would be excellent (< 2 mils penetration per year) at temperatures below 160F. It would not be recommended for temperstures above 200F.
 
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Thanks bilge...In several literatures indicate that aluminum will be corroded rapidly in pure ethanol (no water content). The corrosion will be ceased for some water content. However, I don't know about its corrosion mechanism. Can anyone describe or inform me about the references?
 
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