Um Estudo Termodinâmico Da Corrosão Dos Aços Carbono Pelo Sulfeto De Hidrogênio – Explorando Conceitos De Equilíbrio Químico

Oliveira, Mariana Cristina de; Lima, Alexandre Pereira de; Figueredo, Rodrigo Monzon; Acciari, Heloísa Andréa; Codaro, Eduardo Norberto

doi:10.21577/0100-4042.20170186

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…27,60 Due to its high electrical conductivity, 64 H + (aq) , H 2 CO 3(aq) or HCO 3 − (aq) species can be reduced on the film surface, thus causing iron oxidation. [65][66][67][68] The nucleation and growth of FeCO 3(s) will occur if the local conditions at the film/ electrolyte interface favor the formation of this new phase.…”

Section: Carbon Steel Corrosionmentioning

confidence: 99%

Films Formed on Carbon Steel in Sweet Environments - A Review

Fioravante¹,

Nunes²,

Acciari³

et al. 2019

J. Braz. Chem. Soc.

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Corrosion of carbon steel pipelines in sweet environments has been extensively researched on oil and natural gas exploration and production in order to obtain efficient corrosion mitigation methods. Although the consequences of corrosion are known, the cause and mechanism by which a certain phenomenon occurs are still not well understood. Sweet corrosion is mainly caused by the carbon dioxide dissolved in the water contained in the oil. It can manifest itself in different ways and one of which is the formation of a scale on the inner walls of the pipelines, which determines the evolution of corrosion process. This paper discusses the effects of partial pressure of carbon dioxide, dissolved hydrogen sulfide, dissolved oxygen and water chemistry on scale formation. Particular attention is paid to the nature and stability of the aqueous species formed during the corrosion process, as well as the thermodynamic and kinetic aspects lead to the scale formation on the carbon steel surface. The main objective is to enhance the understanding of the conditions of formation and precipitation of siderite and mackinawite and their effects on corrosion processes involving low carbon steels.

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Section: Carbon Steel Corrosionmentioning

confidence: 99%

Films Formed on Carbon Steel in Sweet Environments - A Review

Fioravante¹,

Nunes²,

Acciari³

et al. 2019

J. Braz. Chem. Soc.

Self Cite

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“…Several works in Figure 9. Diagram E vs. pH for thiosulphate and H 2 S thermodynamic equilibrium in aqueous solutions 62 .…”

Section: Analyses Of the Proposed Synthetic Solutionsmentioning

confidence: 99%

Proposal of a Novel Criteria for Soil Corrosivity Evaluation and the Development of New Soil Synthetic Solutions for Laboratory Investigations

et al. 2022

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A novel method to classify the aggressiveness of soil considering its physicochemical content and the development of new synthetic solutions for lab uses is proposed. The results showed that the main criteria existing in the literature for soil corrosivity classification might cause misunderstandings about the real aggressiveness. The synthetic solutions proposed aim to cover a wide range of soil found worldwide in order to refine the assessment of their characteristics hence their corrosivity. For the lab experiments, an API 5L X65 pipeline carbon steel was used. The solutions presented great reliability, and they seemed to be adequate to simulate soils with the presence of sulfate-reducing bacteria (SRB), chloride, and high pH.

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“…Para a ADF não houve alteração estatística nos pH 3,5 e 7,0 (Figura 8A), entretanto, pode-se observar uma redução no pH 10,0 de 8,87 para 7,79, comparando com a água. Fonte : Oliveira, et al (2018) Para a condutividade elétrica (Figura 8B), houve redução no pH 3,5 na ADF de 293,0 µS cm -1 para 201,4 µS cm -1 em comparação com a água. E aumento no pH 7,0 de 2,34 µS cm -1 para 13,26 µS cm -1 , mantendo-se constante para o pH 10,0, quando em comparação com a água.…”

Section: Análise Do Extrato Solubilizado (Método 2)unclassified

Estudio Teórico Y Experimental De Procesos Fotocatalíticos Aplicados a Colorantes Indigoides

Vargas¹,

Chávez²,

Camargo³

2021

Base De Conhecimentos Gerados Na Engenharia Ambiental E Sanitária 2

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Direitos para esta edição cedidos à Atena Editora pelos autores.Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons.Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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Um Estudo Termodinâmico Da Corrosão Dos Aços Carbono Pelo Sulfeto De Hidrogênio – Explorando Conceitos De Equilíbrio Químico

Cited by 3 publications

References 9 publications

Films Formed on Carbon Steel in Sweet Environments - A Review

Films Formed on Carbon Steel in Sweet Environments - A Review

Proposal of a Novel Criteria for Soil Corrosivity Evaluation and the Development of New Soil Synthetic Solutions for Laboratory Investigations

Estudio Teórico Y Experimental De Procesos Fotocatalíticos Aplicados a Colorantes Indigoides

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