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PROMOTING ECO-FRIENDLY CORROSION INHIBITOR USING BITTER KOLA LEAVES IN CARBON MILD STEEL USING HCL ACIDIC MEDIA

Journal: International Journal of Civil Engineering and Technology (IJCIET) (Vol.10, No. 2)

Publication Date:

Authors : ; ;

Page : 222-230

Keywords : Corrosion; Mild steel; Bitter kola; Inhibitor; Agriculture; Temperature;

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Abstract

Corrosion of mild steel in HCl was investigated using the weight loss method. The mild steel used was cut into 16 coupons with 5.0 cm x 5.0 cm x 0.2 cm dimensions which were degreased with ethanol and washed with distilled water and finally weighed. The mild steel coupons were exposed to HCl with varied concentrations (0, 10, 25 and 40%) of Garcinia kola extracts used as corrosion inhibitors for 4 hours at 400C and 600C respectively. The result showed that at 400C; the inhibition efficiency of 65.5% was observed at 25 % HCl concentration and 62.9% at 40% HCl concentration while at 600C; inhibition efficiency of 87.7% was at 25% HCl concentration and 88.1% at 40% concentration respectively. It can be concluded that increase in concentration increases the inhibition efficiency. The presence of flavonoid and alkanoids in bitter kola stem is a good inhibitor.

Last modified: 2019-05-21 15:57:17