Lavandula angustifolia extract (LAE) has been identified as an effective and eco-friendly corrosion inhibitor for stainless steel in desalination units, offering 94.3% efficiency and sustainable protection against HCl-induced damage.

A recent study has unveiled the potential of Lavandula angustifolia extract (LAE) as an eco-friendly corrosion inhibitor for stainless steel (316SS) used in desalination units. The research demonstrates how LAE can significantly mitigate the effects of hydrochloric acid (HCl) during cleaning processes under dynamic conditions, offering an effective and sustainable alternative to traditional inhibitors.

The study revealed that at a concentration of 300 mg/L, LAE achieves a remarkable 94.3% inhibition efficiency, adhering to stainless steel surfaces through the Freundlich adsorption isotherm model. Key compounds in LAE, such as linalyl acetate and linalool, form a protective barrier, reducing corrosion rates even at high acid concentrations. Furthermore, LAE’s endothermic reaction behavior enhances the activation energy of corrosion processes, underscoring its efficiency as a green solution.

Electrochemical analyses validated LAE’s mixed-type inhibition, while surface studies confirmed its ability to create a hydrophobic layer, protecting stainless steel from HCl-induced damage. Compared to synthetic inhibitors, LAE is not only effective but also biodegradable and cost-efficient, positioning it as a promising advancement for industries reliant on acid cleaning, such as desalination.

This innovation highlights the growing focus on integrating sustainable practices in industrial applications, ensuring long-lasting equipment protection with minimal environmental impact.

Credits: This article is based on the findings from “Protection of Stainless Steel Surfaces in Desalination Units Against Corrosion During Acid Cleaning Under Dynamic Conditions by Using Lavender Angustifolia Extract as a Green Inhibitor,” published in Scientific Reports (2025)