Data/hora: 07/06/2024 07:21:44

Provedor de dados: | 59
País: | Brazil
Título: | Recent advances in the study of biocorrosion: an overview
Autores: | Beech,Iwona B.; Gaylarde,Christine C.
Data: | 1999-07-01
Ano: | 1999
Palavras-chave: | Copper; Corrosion; Steel; Sulfate-reducing bacteria; Surface spectroscopy.
Resumo: | Biocorrosion processes at metal surfaces are associated with microorganisms, or the products of their metabolic activities including enzymes, exopolymers, organic and inorganic acids, as well as volatile compounds such as ammonia or hydrogen sulfide. These can affect cathodic and/or anodic reactions, thus altering electrochemistry at the biofilm/metal interface. Various mechanisms of biocorrosion, reflecting the variety of physiological activities carried out by different types of microorganisms, are identified and recent insights into these mechanisms reviewed. Many modern investigations have centered on the microbially-influenced corrosion of ferrous and copper alloys and particular microorganisms of interest have been the sulfate-reducing bacteria and metal (especially manganese)-depositing bacteria. The importance of microbial consortia and the role of extracellular polymeric substances in biocorrosion are emphasized. The contribution to the study of biocorrosion of modern analytical techniques, such as atomic force microscopy, Auger electron, X-ray photoelectron and Mössbauer spectroscopy, attenuated total reflectance Fourier transform infrared spectroscopy and microsensors, is discussed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300001
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S0001-37141999000300001
Formato: | text/html
Fonte: | Revista de Microbiologia  v.30 n.3 1999
Fonte: | info:eu-repo/semantics/openAccess