Investigation of ginkgo biloba leave extracts as corrosion and Oil field microorganism inhibitors

Chen, Gang; Zhang, Min; Zhao, Jier; Zhou, Rui; Meng, Zuchao; Zhang, Jie

doi:10.1186/1752-153x-7-83

Cited by 36 publications

(16 citation statements)

References 23 publications

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“…Plant extracts are biodegradable and constitute remarkable rich sources of natural chemical compounds that can be extracted by simple procedures at low cost. The basic components of extracts are sugars, gallic acid, ellagic acid and flavanoids [12,13]. The presence of tannins, cellulose and polycyclic compounds normally enhances the film formation over the metal surface, thus decreasing corrosion [14,15].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media

Akalezi

Oguzie

2015

Int J Ind Chem

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Background The inhibition efficiency of Chrysophyllum albidum extract in controlling corrosion of mild steel in 1 M HCl has been evaluated by weight loss, potentiodynamic polarization and electrochemical impedance techniques at 303 K. The effect of immersion time and temperature on inhibition efficiency of the extract was also studied. Results Inhibition was found to increase with increasing concentration of the extract but decrease with increasing time and temperature. Data from electrochemical measurements suggest that the extract functioned by adsorption of the organic matter on the metal/corrodent interface, inhibiting both the anodic and cathodic half reactions of the corrosion process. The increase in concentration of the inhibitor causes an increase in the activation energy and a decrease in the exponential factor k. Conclusion The plant extracts follow Langmuir adsorption isotherm. Moreover, the process of adsorption is spontaneous, stable and considered to be physical adsorption. The thermodynamic properties recorded suggest that the process of film formation is higher than the destruction of the metal surface and that the adsorption process is exothermic.

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Section: Introductionmentioning

confidence: 99%

Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media

Akalezi

Oguzie

2015

Int J Ind Chem

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“…The increasing of ct value and decreasing of CPE value also showed adsorption process. The quercetin (Figure 7 aromatic rings [30] that can interact with the vacant orbital of Fe as shown in Figure 7(b). Those interactions will form thin protective layer (Fe-quercetin complex) which protect the 304SS from the aggressiveness of sulfuric acid.…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Sanjay

Soenoko

Suprapto

et al. 2015

International Journal of Corrosion

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The inhibition properties of bee wax propolis (BWP) extract on the 304SS in 0.5 M sulfuric acid were conducted using potentiodynamic polarization, EIS, and XRD. Quercetin (2-(3.4-dihydroxy phenyl)-3.5.7-trihydroxy-4H-chromen-4-one) was identified as the main compound in the BWP extract based on FTIR and HPLC analysis. The results showed that the inhibitor could retard the corrosion rate of 304SS in 0.5 M sulfuric acid which reached 97.29% and 91.42% at 2000 ppm based on potentiodynamic polarization and EIS measurement, respectively. The inhibition efficiency decreased with increasing temperature. The inhibition mechanism of BWP extract on the 304SS was physisorption and obeyed Temkin adsorption isotherm equation. The thin protective layer on the 304SS surface was confirmed by XRD.

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“…Organic inhibitors are the predominant compounds used in the oil industry because they can act as a barrier for mild steel against corrosive media. Most of these inhibitors are heterocyclic molecules, such as pyridine, imidazoline and azoles [ 32 – 34 ], or polymers [ 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

Experimental and theoretical studies of Schiff bases as corrosion inhibitors

Jamil

Al-Okbi

Al-Baghdadi

et al. 2018

Chemistry Central Journal

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BackgroundRelatively inexpensive, stable Schiff bases, namely 3-((4-hydroxybenzylidene)amino)-2-methylquinazolin-4(3H)-one (BZ3) and 3-((4-(dimethylamino)benzylidene)amino)-2-methylquinazolin-4(3H)-one (BZ4), were employed as highly efficient inhibitors of mild steel corrosion by corrosive acid.FindingsThe inhibition efficiencies were estimated based on weight loss method. Moreover, scanning electron microscopy was used to investigate the inhibition mechanism. The synthesized Schiff bases were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy and micro-elemental analysis. The inhibition efficiency depends on three factors: the amount of nitrogen in the inhibitor, the inhibitor concentration and the inhibitor molecular weight.ConclusionsInhibition efficiencies of 96 and 92% were achieved with BZ4 and BZ3, respectively, at the maximum tested concentration. Density functional theory calculations of BZ3 and BZ4 were performed to compare the effects of hydroxyl and N,N-dimethylamino substituents on the inhibition efficiency, providing insight for designing new molecular structures that exhibit enhanced inhibition efficiencies.

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Investigation of ginkgo biloba leave extracts as corrosion and Oil field microorganism inhibitors

Cited by 36 publications

References 23 publications

Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media

Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Experimental and theoretical studies of Schiff bases as corrosion inhibitors

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