Anti-corrosion using rice straw extract for mild steel in 1.5 M H2SO4 solution

Recent research has focused on use of green inhibitors to combat corrosion in industries. This study investigates the effectiveness of rice straw extract (RSE) on mild steel corrosion mitigation in 1.5 M H2SO4 using an optimization technique. Temperature (30–60 °C), inhibitor concentration of 0.2–0.8 g/l and time (3–7 h), were the variables. Phytochemical analysis was used to investigate the chemical constituents of RSE. Scanning electron microscopy was used for the characterization. The thermometry test's maximum inhibitory efficiency was 85.11%. The experimental design revealed a maximum inhibition effectiveness of 84.71%, but the verified experiment revealed a maximum inhibition efficiency of 86.42%. The result of the SEM Showed that more adsorption was observed on mild steel of the validated experiment due to the bioactive constituents of the extract. •Rice straw was a good inhibitor.•The optimal codition gave IE of 86.42 %.•The extract showed adsorption on the surface of mild steel.