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TY  - JOUR
AU  - Emmanuel, Jovine 
AU  - Buchweishaija, Joseph 
PY  - 2021/12/31
Y2  - 2025/07/30
TI  - Temperature Effects on the Corrosion Inhibition of Mild Steel in Sulfuric Acid Solution by Acacia senegal Gum with Halide Ions
JF  - Tanzania Journal of Science
JA  - Tanz. J. Sci.
VL  - 47
IS  - 5
SE  - Articles
DO  - 10.4314/tjs.v47i5.9
UR  - https://tjs.udsm.ac.tz/index.php/tjs/article/view/867
SP  - 1588-1595
AB  - &lt;p&gt;The effects of temperature on the inhibitive effect of naturally occurring &lt;em&gt;Acacia senegal&lt;/em&gt; gum exudate on the corrosion of mild steel in sulfuric acid was studied between 35 and 70 °C using electrochemical impedance spectroscopy and potentiodynamic polarization methods. Findings showed that &lt;em&gt;Acacia senegal&lt;/em&gt; gum exudate decreases the corrosion rate of mild steel. The inhibition efficiency declined with raising temperature above 35 °C. The increase in the corrosion rate with increasing temperature was observed for both uninhibited and inhibited systems. Addition of halide ions to the &lt;em&gt;Acacia senegal&lt;/em&gt; gum exudate solution enhanced the corrosion inhibition efficiency because of synergistic effects, achieving higher performance with iodide ions as compared to bromide ions. However, the synergistic effects declined above 35 °C up to 70 °C due to temperature effects. It has been observed that increasing temperature adversely affected inhibition efficiencies of both &lt;em&gt;Acacia senegal&lt;/em&gt; gum exudate and the synergy between &lt;em&gt;Acacia senegal&lt;/em&gt; gum exudate and halide ions. Corrosion rates of mild steel, inhibition efficiencies of &lt;em&gt;Acacia senegal&lt;/em&gt; gum exudate and the synergistic effects of halide ions from polarization and impedance measurements were consistent.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Keywords&lt;/strong&gt;: temperature, corrosion, mild steel, synergistic effects, &lt;em&gt;Acacia senegal&lt;/em&gt;, gum exudate.&lt;/p&gt;
ER  -