Using Expired Danacid to Prevent Aluminium Corrosion in Acid
Author Information
Author(s): O.D. Onukwuli, I.A. Nnanwube, F.O. Ochili, J.I. Obibuenyi
Primary Institution: Nnamdi Azikiwe University, Madonna University
Hypothesis
Can expired danacid effectively inhibit the corrosion of aluminium in hydrochloric acid?
Conclusion
Expired danacid is an effective inhibitor for aluminium corrosion in hydrochloric acid, achieving an inhibition efficiency of up to 95.05%.
Supporting Evidence
- The inhibition efficiency increased with higher concentrations of danacid.
- Electrochemical tests showed danacid acted as a mixed-type inhibitor.
- DFT results indicated effective adsorption of danacid on aluminium surfaces.
Takeaway
The study found that expired danacid can help protect aluminium from rusting in acid, making it a useful and eco-friendly option.
Methodology
The study used gravimetric, electrochemical, and density functional theory (DFT) techniques to assess the corrosion inhibition efficiency of expired danacid.
Limitations
The study primarily focused on one type of acid (HCl) and may not be generalizable to other corrosive environments.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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