This study examines the development of a new green and eco-friendly formulation derived from Opuntia dillenii seed oil (labeled as FOD) and its application as a corrosion inhibitor to protect iron which is subject to corrosion phenomena that become important especially in acidic environments as acid rain.

Physicochemical properties and fatty acid analysis of Opuntia dillenii seed oil were performed and they demonstrated that the oil is a major source of unsaturated fatty acids, in particular linoleic acid, with a percentage of 73.388%.

Corrosion inhibition effect of FOD was studied by gravimetric methods, electrochemical measurements, and scanning electron microscopy coupled with elemental analysis (SEM/EDX). Obtained results confirmed that FOD behaves as a good mixed corrosion inhibitor with predominant anodic activity. Inhibition efficiency of FOD is more important when the concentration of FOD and the immersion time increase, reaching values up to 99%. FOD forms a barrier layer on the surface of the iron, and thereby minimizes the contact area between the metal surface and the corrosive solution. The adsorption behavior of FOD on iron surface obeys Langmuir adsorption isotherm with chemisorption and physisorption mechanism.

这项研究考察了一种新的绿色环保配方的开发，该配方源于仙人掌种子油（标记为FOD）及其作为缓蚀剂的用途，可保护铁，这种铁易受腐蚀现象的影响，而腐蚀现象在酸性环境下尤为重要，如酸雨。

进行了仙人掌种子油的理化性质和脂肪酸分析，结果表明该油是不饱和脂肪酸（尤其是亚油酸）的主要来源，占73.388％。

通过重量分析法，电化学测量，扫描电子显微镜和元素分析（SEM / EDX）研究了FOD的缓蚀作用。获得的结果证实，FOD具有良好的阳极活性，可作为一种良好的混合腐蚀抑制剂。当FOD的浓度和浸入时间增加时，FOD的抑制效率更为重要，达到高达99％的值。FOD在铁的表面上形成阻挡层，从而使金属表面与腐蚀性溶液之间的接触面积最小。FOD在铁表面的吸附行为符合朗缪尔等温线的化学吸附和物理吸附机理。