<i>Kappaphycus alvarezii</i> – A marine red alga as a green inhibitor for acid corrosion of mild steel

Kamal, C.; Sethuraman, Mathur Gopalakrishnan

doi:10.1002/maco.201307089

Cited by 35 publications

(16 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Highly roughened electrode surface has smaller n value and it undergoes severe corrosion . The parameters derived from EIS data for bare copper, MPTS film electrodeposited on copper with H 2 O 2, without H 2 O 2 and without pretreatment in 1% NaCl are listed in Table along with inhibition efficiency ( η ), calculated using R ct according to the following equation .

η (%) = \frac{R_{ct (f)} - R_{ct (b)}}{R_{ct (f)}} \times 100

where…”

Section: Resultsmentioning

confidence: 99%

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H₂O₂

Karthik

Sethuraman

2014

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

The enhancement of protection of copper through pretreatment of metal surface with H2O2 and subsequent addition of H2O2 in the electrodeposition of 3‐mercaptopropyltrimethoxysilane (MPTS) has been investigated in the present work. MPTS films over copper surface with and without H2O2 were investigated by FT‐IR, XRD, Raman spectroscopy and SEM. The protection of copper surface by MPTS in the presence and absence of H2O2 in 1% NaCl medium was also investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies (PDS). The results of the study indicate that MPTS film electrodeposited on pretreated copper with 1000 ppm of H2O2 increases the inhibition efficiency to almost 100%.

show abstract

η (%) = \frac{R_{ct (f)} - R_{ct (b)}}{R_{ct (f)}} \times 100

where…”

Section: Resultsmentioning

confidence: 99%

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H₂O₂

Karthik

Sethuraman

2014

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

show abstract

“…This EN2 bacterial culture was used for further studies. The nucleoside sequence of Raja and Sethuraman (2008) 9 Caulerpin 20 76 Kamal and Sethuraman (2012) 10 Rauvolfia serpentine 10 59.88 Raja and Sethuraman (2010) 11 Kappaphycus alvarezii 100 41.91 Kamal and Sethuraman (2013) EN2 was deposited in NCBI under the accession number of KR183873.…”

Section: Bacteriamentioning

confidence: 99%

Ginger extract as green biocide to control microbial corrosion of mild steel

et al. 2017

View full text Add to dashboard Cite

In latest years, various techniques and chemicals have been used for the control of microbial influenced corrosion (MIC) of metals. The application of botanicalbased biocides is one of the effective and practical techniques in the fight against MIC. In the present study, the role of aqueous extract of ginger (Zingiber officinale) (GIE) as green biocide to control MIC of mild steel 1010 (MS) in a cooling water system was investigated. Biocorrosion behavior of Bacillus thuringiensis EN2 on MS and its control by GIE was analyzed by electrochemical measurements. Polarization, electrochemical studies (ES), weight loss measurements (WL), and surface analysis (XRD, X-ray diffraction spectroscopy, and FTIR, Fourier transform infra-red spectroscopy) were performed under various incubation periods up to 4 weeks. We observed that EN2 forms a thick biofilm on the MS metal surface at the end of the incubation period and the WL significantly increased to 993 mg at fourth week when compared to the initial immersion period (194 ± 2 mg). In contrast, with addition of GIE, WL was reduced about 41 ± 2 mg over biotic system (993 ± 2 mg). GC-MS analysis confirmed the adsorption of active component of GIE (b-turmerone) on the metal surface as a protective layer to prevent the biofilm formation and thus leads to reduction of corrosion. The optimum 20 ppm of GIE was found to be effective corrosion inhibition efficiency which was about 80%. From the results of WL, ES, XRD, FTIR, and GC-MS, GIE was identified as biocide and thus inhibits the bacterial growth on MS metal surface and it leads to control MIC. XRD showed that the GIE with EN2 resulted in less formation of corrosion products over biotic and abiotic systems. Overall, this research first shed light on the antibacterial activity of GIE inhibiting biofilm formation, thus reducing the corrosion of MS in cooling water systems.

show abstract

“…[15][16][17][18][19] Os extratos vegetais representam uma rica fonte de compostos orgânicos naturais e sua utilização traz benefícios do ponto de vista ambiental, pois possuem baixa toxidez e causam menores impactos ao ambiente em que serão expostos. [20][21][22][23] Diferentes tipos de extratos têm sidos relatados na literatura como possíveis inibidores de corrosão, em especial procedentes de plantas e sementes. A atividade destes inibidores é atribuída à presença de compostos heterocíclicos alcaloides e flavonóides, compostos policíclicos, celulose e taninos, entre outros, que levam à formação de um filme sobre a superfície metálica, evitando assim a corrosão.…”

Section: Introductionunclassified

“…O estudo das isotermas mostrou que o modelo de Tenkin se adequava melhor ao sistema. 23 O extrato da alga marrom Bifurcaria birfurcata foi analisado como inibidor de corrosão em HCl 1 mol L -1 . Foi obtida uma eficiência máxima média de 80,5 % para uma concentração de 50 % (v v -1 ).…”

Section: Introductionunclassified

Study of the Efficiency of the Algae Prasiola crispa Extract as a Corrosion Inhibitor in HCl 1 mol L-1

Souza¹,

Sampaio²,

Furtado³

et al. 2019

Rev. Virtual Quim.

View full text Add to dashboard Cite

Rev. Virtual Quim. |Vol 11| |No. 5| |1521-1539| 1521 Artigo Estudo da Eficiência do Extrato da Alga Prasiola crispa como Inibidor de Corrosão em HCl 1 mol L -1 Souza, G. G. P.; Sampaio, M. T. G.; Furtado, A. B.; Buzzetti, P. H. M.; Ramos, C. J. B.; Teixeira, V. L.; Velasco, J. A. C.; Damasceno, R. N.; Ponzio, E. A.* Rev. Virtual Quim., 2019, 11 (5), 1521-1539. Data de publicação na Web: 1 de novembro de 2019Abstract: The algae Prasiola crispa extract was investigated as a possible corrosion eco-inhibitor for carbon steel in HCl 1 mol L -1 medium. The techniques used for the evaluation were the gravimetric tests, electrochemical polarization and electrochemical impedance spectrometry. The analysis showed that the extract has a great corrosion efficiency, reaching 95.9 % efficiency in the concentration of 0.800 g L -1 . The mechanism of inhibition is based on the adsorption of molecules on the steel surface generating a protective barrier. The study of the adsorption isotherms showed that the Langmuir model is the most appropriate and that the adsorption process is spontaneous presenting a ΔG ads of -27.9 kJ mol -1 which constitutes an intermediate behavior between a physical and chemical adsorption. ResumoO extrato da alga Prasiola crispa foi investigado como possível eco-inibidor de corrosão para aço carbono em meio de HCl 1 mol L -1 . As técnicas utilizadas para a avaliação foram os ensaios gravimétricos, de polarização eletroquímica e de espectrometria de impedância eletroquímica. As análises mostraram que o extrato possui ótima eficiência anticorrosiva, chegando a 95,9 % de eficiência em concentração de 0,800 g L -1 . O mecanismo de inibição se baseia na adsorção das moléculas na superfície do aço gerando uma barreira protetora. O estudo das isotermas de adsorção mostrou que o modelo de Langmuir é o mais apropriado e que o processo de adsorção é espontâneo apresentando um ΔG ads de -27,9 kJ mol -1 , o que configura um comportamento intermediário entre uma adsorção física e química Palavras-chave: Eco-Inibidor; Prasiola crispa; aço carbono A36; ensaio gravimétrico; polarização eletroquímica; espectroscopia de impedância eletroquímica.

show abstract

Kappaphycus alvarezii – A marine red alga as a green inhibitor for acid corrosion of mild steel

Cited by 35 publications

References 48 publications

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H₂O₂

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H₂O₂

Ginger extract as green biocide to control microbial corrosion of mild steel

Study of the Efficiency of the Algae Prasiola crispa Extract as a Corrosion Inhibitor in HCl 1 mol L-1

Contact Info

Product

Resources

About

Kappaphycus alvarezii – A marine red alga as a green inhibitor for acid corrosion of mild steel

Cited by 35 publications

References 48 publications

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H2O2

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H2O2

Ginger extract as green biocide to control microbial corrosion of mild steel

Study of the Efficiency of the Algae Prasiola crispa Extract as a Corrosion Inhibitor in HCl 1 mol L-1

Contact Info

Product

Resources

About

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H₂O₂

A robust method of enhancement of protection ability of electrodeposited silane film over copper surface using H₂O₂