Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy

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A clean metal surface which contacts natural or industrial waters undergoes a series of processes that lead to the formation of inorganic deposits and biofilms. In these structures, microorganisms adhere irreversibly to the substrate, embedded in a matrix of extracellular polymeric substances (EPS)....

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Detalles Bibliográficos
Autores principales:	Gómez de Saravia, Sandra Gabriela, Viera, Marisa, Rastelli, Silvia Elena
Formato:	Objeto de conferencia
Lenguaje:	Inglés
Publicado:	2016
Materias:	Ingeniería SAE 1010 carbon steel Microbiologically influenced corrosion Extracellular polymeric substances Microscopic techniques Electrochemical impedance spectroscopy
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/92979
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-92979
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ingeniería SAE 1010 carbon steel Microbiologically influenced corrosion Extracellular polymeric substances Microscopic techniques Electrochemical impedance spectroscopy
spellingShingle	Ingeniería SAE 1010 carbon steel Microbiologically influenced corrosion Extracellular polymeric substances Microscopic techniques Electrochemical impedance spectroscopy Gómez de Saravia, Sandra Gabriela Viera, Marisa Rastelli, Silvia Elena Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
topic_facet	Ingeniería SAE 1010 carbon steel Microbiologically influenced corrosion Extracellular polymeric substances Microscopic techniques Electrochemical impedance spectroscopy
description	A clean metal surface which contacts natural or industrial waters undergoes a series of processes that lead to the formation of inorganic deposits and biofilms. In these structures, microorganisms adhere irreversibly to the substrate, embedded in a matrix of extracellular polymeric substances (EPS). The problems arising from biofilm formation, such as microbiologically influenced corrosion (MIC), loss of equipment performance, product damages, generate economic costs and may lead to structural failures with consequences for operators and/or users. The aim of this study was to evaluate the corrosion associated with the formation of bacterial biofilms on carbon steel surfaces. Bacterial cultures used in the experiments were isolated from different systems that presented MIC. SAE 1010 carbon steel coupons were placed in cultures for biofilm development. After 48 h coupons were extracted and bacterial adherence was measured by viable bacteria counts, epifluorescence microscopy, crystal violet assay and EPS quantification. The biofilm morphology was analyzed by scanning electron microscopy (SEM) and epifuorescence microscopy. Surface deterioration was monitored using electrochemical impedance spectroscopy and open circuit potential measurements. Studies carried out allowed correlating the adherence of the tested strains with the degree of attack suffered by the SAE 1010 carbon steel coupons.
format	Objeto de conferencia Objeto de conferencia
author	Gómez de Saravia, Sandra Gabriela Viera, Marisa Rastelli, Silvia Elena
author_facet	Gómez de Saravia, Sandra Gabriela Viera, Marisa Rastelli, Silvia Elena
author_sort	Gómez de Saravia, Sandra Gabriela
title	Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
title_short	Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
title_full	Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
title_fullStr	Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
title_full_unstemmed	Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
title_sort	evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/92979
work_keys_str_mv	AT gomezdesaraviasandragabriela evaluationofbiofilmsformationandcorrosionofsteelbymicroscopictechniquesandelectrochemicalimpedancespectroscopy AT vieramarisa evaluationofbiofilmsformationandcorrosionofsteelbymicroscopictechniquesandelectrochemicalimpedancespectroscopy AT rastellisilviaelena evaluationofbiofilmsformationandcorrosionofsteelbymicroscopictechniquesandelectrochemicalimpedancespectroscopy
bdutipo_str	Repositorios
_version_	1764820491183325184

Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy

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