This research examines the inhibitory effect of alligator pepper husk extract (APHE) on mild steel corrosion in acidic solution. Phytochemical analysis, Fourier transform Infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and weight loss were used to investigate the extract’s corrosion inhibition activity. APHE was evaluated at two distinct temperatures, 308 and 328 K, respectively. The analysis of the data showed that when the concentration of APHE solution increased from 0 to10ml/0.1 L, there was an increase in the inhibition efficiency from 39.7% to 99.9% at a temperature of 308 K over a period of 5 hrs, which is the highest inhibition efficiency. The inhibitory efficiency declined from 78.9% to 75.3% as the concentration increased at 328 K for 5. The maximum inhibition efficiency was 98.3% at a concentration of 10 mL/0.1 L and a temperature of 328 K for 7 h, emphasizing the extract's robustness. The adsorption process was consistent with the physisorption mechanism and matched to the Langmuir isotherm highlighting the fundamental interactions involved. The SEM and FTIR data revealed that the organic components in APHE, as well as the phytochemical constituents, make it a very safe, inexpensive, and effective inhibitor that could be used as an alternative for industrial inhibitors. This study, not only establishes APHE as an effective inhibitor, but also paves the way for innovative applications in corrosion management.
Kolawole et al. (Thu,) studied this question.