Apricot pomaces extract (Prunus Armeniaca L.) as a highly efficient sustainable corrosion inhibitor for mild steel in sodium chloride solution

Abstract

The present study was carried out to identify the components present in the ethanol apricot pomace extract by GC-MS analysis. Various experimental models including iron(III) reducing capacity, total antioxidant capacity, DPPH radical scavenging activity were used for characterization of antioxidant activity of the extract. Weight loss investigation, potentiodynamic polarization, and FTIR techniques were used to study the corrosion inhibition. The maximum inhibition efficiency of 94.6% was achieved by using 500 ppm of the inhibitor. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis were used to characterize the protective film. AFM also illustrated an improvement in the surface properties of the samples in the presence of APE. The influence of the immersion period on inhibition efficiency was evaluated. The GC-MS experimental results show that the major compounds of the APE are 3,4,5trihydroxybenzoic acid, chlorogenic acid, 3-(3,4-dihydroxyphenyl)-2-propenoic acid, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one, and catechin. The results revealed that in the attendance of the APE and with the immersion time progress up to 48 h, the inhibition capacity of inhibitor was promoted.The mechanism of action of the inhibitor is also discussed. Quantum chemical parameters calculated for the molecules contained in the aqueous extract are interpreted to predict the corrosion inhibition efficiency of the considered extract. The theoretical study gave insights to the active sites, chemical reactivity and possible interaction mechanism between the inhibitor compounds and mild steel surface. The apricot pomace extract studied in this work are potential multifunctional inhibition materials as they showed good antioxidant and anticorrosion properties.

Synthesis of high-effective steel corrosion inhibitors in water-oil mixtures

“…The «green» corrosion inhibitors were investigated as an effective anti-corrosion agent for steel in aqueous environments containing chlorides. The environmentally safe «green» organic compounds of various chemical classes (polyphenol compounds, flavonoids, aldehydes) ensure efficiency at the level of 98 % [13]. The paper considered selective action only for a neutral water corrosion environment; the two-phase systems were not studied that are typical for steel corrosion in the oil and gas extraction industries.…”

“…Thus, our analysis of works [12][13][14][15][16][17][18] allows us to conclude that up to now the issues related to the development of highly effective, and affordable, metal corrosion inhibitors in water-organic environments have remained insufficiently studied.…”

Devising a corrosion inhibitor for steel ST37-2 in a water-oil mixture

“…An effective anti-corrosion agent for steel that is used in high-chloride water environments is the «green» organic compounds [10,11]. The maximum efficacy of inhibition of 94.6 % was achieved using 500 ppm of the inhibitor.…”

“…The maximum efficacy of inhibition of 94.6 % was achieved using 500 ppm of the inhibitor. However, the cited works [10,11] considered the selective action only for a neutral water corrosive environment and did not study the efficacy of inhibitors for bi-phase systems that are characteristic of steel corrosion in the petrochemical and oil-refining industries.…”

Use of Cedrela odorata Linnaeus Exudate for Inhibiting Corrosion by Chlorides in Reinforced Concrete

“…In this sense, cedar has been used as a coating on steel, obtaining corrosion inhibitions of up to 46.4 % [17]. Other elements that have been employed as anticorrosive agents include ginger extract [7], maize gluten meal [18], castor oil [19], cactus mucilage, marine brown algae, dehydrated cactus mucilage [20], apricot pomaces [15], Rhizophora mangle L. [9], [21], among others [22]- [25], because they contain compounds and functional groups that act as inhibitors of corrosive mechanisms. Therefore, the present article intends to evaluate the use of cedar exudate as an inhibitor of corrosion caused by the action of chlorides and the probability of steel corrosion in rc.…”