Neem extract as an inhibitor for biocorrosion influenced by sulfate reducing bacteria: A preliminary investigation

Bhola, Shaily M.; Alabbas, Faisal M.; Bhola, Rahul; Spear, John R.; Mishra, Brajendra; Olson, D. L.; Kakpovbia, Anthony E.

doi:10.1016/j.engfailanal.2013.09.015

Cited by 58 publications

(33 citation statements)

References 29 publications

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“…A research conducted by Jain et al (a research group at Tata Steel, Jamshedpur) published in Tata Search (2014) also highlighted the inhibition effect of AZI against mild steel in acid media (HCl and HNO 3 ), and the results of weight loss studies correlated well with polarization studies . In a very interesting study by Bhola et al (2014) published in Engineering Failure Analysis, authors investigated the inhibition effect of AZI extract on microbiologically influenced corrosion of API 5L X80 line pipe steel by a sulfate reducing bacterial (SRB) consortium. On the basis of the field emission scanning electron microscopy (FE-SEM) and energy dispersive spectroscopy (EDS) studies, electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR), and open circuit potential (OCP) were used to investigate the in situ corrosion behavior, and they concluded that neem extract has the capability to reduce the biocorrosion rate by approximately 50 % (Bhola et al 2014), which is fairly high and very encouraging, clearly underlining the importance of AZI extract as a corrosion inhibitor.…”

Section: Introductionmentioning

confidence: 99%

Potential of Azadirachta indica as a green corrosion inhibitor against mild steel, aluminum, and tin: a review

2015

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Azadirachta indica (AZI, commonly recognized as "Neem") is noteworthy both for its chemical and for its biological actions. It is one of the most fruitful sources of secondary metabolites in nature. To date, more than 300 natural products have been isolated from different sections of the tree, with new compounds added to the list every year. As a contribution to the current interest on green corrosion inhibitors, the present study aims at broadening the application of plant extracts for metallic corrosion inhibition by investigating the inhibiting properties of A. indica especially for mild steel, aluminum, and tin. In the present article, we discuss the potential of AZI extract as a corrosion inhibitor on metal surfaces, especially of mild steel, aluminum, and tin. The adsorption isotherm studies, chemical composition of AZI, effect of temperature on inhibition efficiency and computational analysis related with AZI adsorption on metals have also been discussed in detail. This work will further help in the understanding of the adsorption mechanism involved and hence inhibition effect of plant extract against metal corrosion.

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Section: Introductionmentioning

confidence: 99%

Potential of Azadirachta indica as a green corrosion inhibitor against mild steel, aluminum, and tin: a review

2015

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“…5 mL of 1000 mgmL −1 biocides was added to the bacteria culture and the results were compared with the control experiments. The presence of SRB using the sample from Lutong shows sign of growth after 5-7 hours of cultivations marked by accumulation of dark precipitates due to occurrence of ion Fe 2+ reductions [8]. Figure 1 shows the effect of the biocides on the biomass growth of planktonic SRB on the day seven.…”

Section: Preliminary Study On the Efficacies Of Biocides On Srbmentioning

confidence: 99%

“…The replacement cost for the pipeline due to biocorrosion was reported to be $250 million dollar per annum [8]. Besides that, the direct cost for combatting its existence alone causes billions of dollars, where some oil companies allocated minimum millions of dollars for the price of biocides alone [8].…”

Section: Introductionmentioning

confidence: 99%

“…Other natural resources from herbaceous extract showed significant effects towards SRB activities although they do not completely inhibit the growth. The antimicrobial properties found in Neem extract had reduced the SRB activities by 50% [8]. The antimicrobial effect of tested natural plant extracted has been attributed to the presence of compounds such as flavonols, phenolic acid, terpenes, anthocyanins, stilbenes, and tannis.…”

Section: Introductionmentioning

confidence: 99%

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Natural Biocides for Mitigation of Sulphate Reducing Bacteria

Zain

Salleh

Abdullah

2018

International Journal of Corrosion

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This study addresses the potential usage of various herbaceous plants extract including betel leave extract (BLE), green tea (GTE), turmeric (TE), belalai gajah (BGE), garlic extracts (GE), and manjakani extracts (ME) as future biocides of SRB that are natural and nontoxic. Study revealed that retardation of growth was obtained after addition of 5mL of natural biocides to 100 mL of the culture. Reduced biomass growth was observed with most of the tested biocides, dictated by lower biomass contents accepts for ginger and garlic. The planktonic growth was successively suppressed with addition of GTE, TE, and BGE, where the biomass production was decreased by more than 80.0% compared to the control experiments. GRE increased the growth of planktonic bacteria while the GE induced the formation of biofilms, showed by increase in biomass productions with over 23.4% and 77.46% enhancements, respectively. These results suggest that turmeric, green tea, and belalai gajah plants extracts are highly potential biocidal agents for mitigating SRB, thus controlling the effect of MIC on metal surfaces. However, the chemical stability, potential toxicity, and consistent performance of the extracts need further investigation for optimization of its use on a real field scale.

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“…The different hazardous effects of most synthetic corrosion inhibitors has motivated the use of safe natural products, as they can provide a renewable source for naturally available chemical compounds that can be extracted simply and at low cost. Several investigations have been reported using such safe and economic plant extracts for corrosion inhibition of different metals (El Hosary et al, 1972;El Hosary and Saleh, 1993;Avwiri and Igho, 2003;Abdel-Gaber, 2007;Abdel-Gaber et al, 2008Khamis et al, 2008;Bothi Raja and Sethuraman, 2009;Behpour et al, 2009;Jain et al, 2006;El-Etre et al, 2005;Sharma et al, 2010;Sivarajup and Kannan, 2010;Obot et al, 2013;Bhola et al, 2014;Fares et al, 2012;Yaro et al, 2013;. The inhibitive effect of Zanthoxylum alatum plant extract on the corrosion of mild steel in 20, 50 and 88 per cent aqueous orthophosphoric acid (H 3 PO 4 ) was investigated by Gunasekaran and Chauhan (2004) using weight loss and electrochemical impedance spectroscopy (EIS).…”

Section: Introductionmentioning

confidence: 99%

An important world crop – barley – as a new green inhibitor for acid corrosion of steel

Saadawy

2015

Anti-Corrosion Methods and Materials

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Purpose -The purpose of this paper was to test the extract of barley as an environmentally friendly inhibitor for the acid corrosion of steel due to its wide availability as a popular major crop and its richness with different chemical constituents reported in literature (40) like alanine, glycine, serine, aspartic acid, leucine, valine, tyrosine and isoleucine with various number of functional groups that are able to chelate metal cations and to discuss the effect of temperature on its inhibition efficiency. Design/methodology/approach -Electrochemical impedance spectroscopy (EIS) and polarization measurements were carried out using frequency response analyzer Gill AC instrument. The frequency range for EIS measurements was 0.1 Յ f Յ 1 ϫ 103 with an applied potential signal amplitude of 10 mV around the rest potential. Polarization measurements were carried out at a scan rate of 30 mV/min, utilizing a three-electrode cell. A platinum sheet and saturated calomel electrode were used as counter and reference electrodes, respectively. The working electrode was constructed with steel specimens that have the following composition (weight per cent): C, 0.21; S, 0.04; Mn, 2.5; P, 0.04; Si, 0.35; and balance Fe. Findings -Barley extract could act as an effective corrosion inhibitor for the acid corrosion of steel. The inhibiting action of the barley extract was attributed to its adsorption over the metal surface that blocks the available cathodic and anodic sites. Adsorption isotherms indicated that the adsorbed extract molecules cover one active center over the metal surface. Originality/value -The research included the first use of an important world crop as an effective corrosion inhibitor that can reduce the corrosion of steel to an extent of 94 per cent.

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Neem extract as an inhibitor for biocorrosion influenced by sulfate reducing bacteria: A preliminary investigation

Cited by 58 publications

References 29 publications

Potential of Azadirachta indica as a green corrosion inhibitor against mild steel, aluminum, and tin: a review

Potential of Azadirachta indica as a green corrosion inhibitor against mild steel, aluminum, and tin: a review

Natural Biocides for Mitigation of Sulphate Reducing Bacteria

An important world crop – barley – as a new green inhibitor for acid corrosion of steel

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