Green Inhibitors to Reduce the Corrosion Damage

Abstract

Over the last years, corrosion phenomenon is an important economical and lives lost, which calls in the last decades researches on its final resolution by various techniques. Through this book chapter, we present one of the most used methods to protect the metals: the corrosion inhibitor. We have presented the classification (liquid and gas phase), action mode (adsorption, barrier, reinforcing of the oxide layer, passivation, and formed insoluble complex), the application fields (water treatment, petroleum industry), and some particular inhibitors. In addition, we present a case study using a green corrosion inhibitor (GCI) prepared from the oil of Ceratonia siliqua L. seeds.

Behavior ofPrunus persicaas Green and Friendly Corrosion Inhibitor for Corrosion Protection

“…On the other hand, other reports mentioned that aromatic rings contain double bonds and π electrons, those are important as they do favorable chelator interactions on the metal surface too [25,26]. Compounds which frequently depends on the presence of functional groups in their chemical structure and electron pairs provided by heteroatoms such as N, O, P or S; these features and the presence of pi electrons as double or triple carbon-carbon bonds enable this compounds to form favorable interactions with the metal surface (Figure 2).…”

“…All previous aspects motivate to perform the study of corrosion inhibition activity and to observe how the corrosion rate is reduced and how the inhibitor act and how much time gives protection to the metal surface [26][27][28]. In Table 1 some examples of green corrosion inhibitors for some species.…”

“…In Table 1 some examples of green corrosion inhibitors for some species. Green corrosion inhibitors have been positioned as a good alternative because they have come from natural sources, so they are considered less toxic, biodegradables, ecofriendly, and sustainable [1,10,26,38,39].…”

A Review on Plants and Biomass Wastes as Organic Green Corrosion Inhibitors for Mild Steel in Acidic Environment

“…Monticelli [21] mentioned that the standardized definition of a corrosion inhibitor is a "chemical substance that, when presented in the corrosion system at a suitable concentration, decreases the corrosion rate, without significantly changing the concentration of any corrosive agent". Abbout [22] called into question the characteristics of effective corrosion inhibitors. Thus, he proposed several characteristics that need to be possessed by an effective corrosion inhibitor, namely, stability at a certain temperature, low cost, and, more importantly, adherence to environmental laws and standards [22].…”

“…Abbout [22] called into question the characteristics of effective corrosion inhibitors. Thus, he proposed several characteristics that need to be possessed by an effective corrosion inhibitor, namely, stability at a certain temperature, low cost, and, more importantly, adherence to environmental laws and standards [22]. Furthermore, the corrosion rate needs to decrease once the inhibitors are introduced into the HCl environment.…”