Oyewole O, Oshin T A, Atotuoma B O
Department of Chemical Engineering, Landmark University, PMB 1001 Omu-Aran, Kwara State, Nigeria.
SGD 9:Industry, Innovation and Infrastructure Research Group, USA.
Heliyon. 2021 Apr 29;7(4):e06840. doi: 10.1016/j.heliyon.2021.e06840. eCollection 2021 Apr.
The corrosion inhibition of mild steel in 0.5M HSO solution was studied in the presence of stem extract as inhibitor. Phytochemical analysis results confirmed the presence of organic constituents such as Alkaloids, Tannins, Glycosides, Saponins and Flavonoids which made the stem extract act as a good inhibitor. The highest inhibition efficiency as observed from the experimental design was 93.29%, with process levels of 4 days, temperature: 60 °C and inhibitor concentration: 1.0 g/L respectively. The optimal process levels were: 4.11 days, temperature: 48.92 °C and inhibitor concentration: 1.16 g/L respectively, which gave an inhibition efficiency of 94.34%. The result from the Scanning Electron Micrographs showed that via the validated experiment, a more passive layer of film was formed on the surface of the coupon, confirming the high efficiency of the extract's inhibiting role in corrosion prevention.
在以茎提取物作为缓蚀剂的情况下，研究了低碳钢在0.5M硫酸溶液中的缓蚀性能。植物化学分析结果证实了茎提取物中存在生物碱、单宁、糖苷、皂苷和黄酮类等有机成分，这些成分使茎提取物成为一种良好的缓蚀剂。从实验设计中观察到的最高缓蚀效率为93.29%，工艺水平分别为4天、温度60°C和缓蚀剂浓度1.0 g/L。最佳工艺水平分别为4.11天、温度48.92°C和缓蚀剂浓度1.16 g/L，此时缓蚀效率为94.34%。扫描电子显微镜图像的结果表明，通过验证实验，试样表面形成了更致密的钝化膜层，证实了该提取物在防止腐蚀方面具有高效的抑制作用。
