Interpreting microbiologically assisted cracking with Ee-pH diagrams
Although many mechanisms have been proposed to explain the microbiologically assisted cracking (MAC) of steel and copper, a theoretical interpretation is necessary. In this paper, we attempt to give a theoretical interpretation of sulfate/nitrate reducing bacteria (SRB/NRB)-assisted cracking using E...
Gespeichert in:
Veröffentlicht in: | Bioelectrochemistry (Amsterdam, Netherlands) Netherlands), 2018-04, Vol.120, p.57-65 |
---|---|
Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | 65 |
---|---|
container_issue | |
container_start_page | 57 |
container_title | Bioelectrochemistry (Amsterdam, Netherlands) |
container_volume | 120 |
creator | Wu, Tangqing Sun, Cheng Ke, Wei |
description | Although many mechanisms have been proposed to explain the microbiologically assisted cracking (MAC) of steel and copper, a theoretical interpretation is necessary. In this paper, we attempt to give a theoretical interpretation of sulfate/nitrate reducing bacteria (SRB/NRB)-assisted cracking using Ee-pH diagrams. Under the combined actions of SRB/NRB and external stress, the cell potential (Ecell) and the corrosion current density of the corrosion reaction increase, such that the corrosion reactions become more thermodynamically favorable. This is the nature of MAC. Nitrate is a far more potent oxidant than sulfate, and thus, the NRB-assisted cracking of iron is a more thermodynamically favorable process than the SRB-assisted cracking. Furthermore, the thermodynamic interpretation is attempted to implicate into the classical stress corrosion cracking mechanisms of pipeline steel.
•Ee-pH diagrams are used to interpret microbiologically assisted cracking.•The cell potential increases under the synergistic effect of SRB/NRB and stress.•NRB-assisted cracking is a more potent corrosion process. |
doi_str_mv | 10.1016/j.bioelechem.2017.11.007 |
format | Article |
fullrecord | <record><control><sourceid>proquest_elsev</sourceid><recordid>TN_cdi_proquest_miscellaneous_1969937068</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S1567539417304796</els_id><sourcerecordid>1969937068</sourcerecordid><originalsourceid>FETCH-LOGICAL-e928-60d6dc5b589f00777da1c06709994659ec7efd461e5476cf0d95e939e00831463</originalsourceid><addsrcrecordid>eNpFkDFPwzAQRi0EEqXwHzKyJPia2I5HKIVWqsTSgc1y7Uvr4iTFTkH8exwVieluePr09AjJgBZAgT8ciq3r0aPZY1vMKIgCoKBUXJAJ1KLOGZ-9X6afcZGzUlbX5CbGA6W0BsEm5HnVDRiOAQfX7bLWmdCnPd_vnNHe_2Q6RhcHtJkJ2nyMzLcb9tkC8-Mys07vgm7jLblqtI9493enZPOy2MyX-frtdTV_XOcoZ3XOqeXWsC2rZZMEhbAaDOWCSikrziQagY2tOCCrBDcNtZKhLCUm1xIqXk7J_Xn2GPrPE8ZBtS4a9F532J-iAsmlLAXldUKfzigmnS-HQUXjsDNoXUAzKNs7BVSNBdVB_RdUY0EFoJJg-Qsp4Gig</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1969937068</pqid></control><display><type>article</type><title>Interpreting microbiologically assisted cracking with Ee-pH diagrams</title><source>Elsevier ScienceDirect Journals Complete</source><creator>Wu, Tangqing ; Sun, Cheng ; Ke, Wei</creator><creatorcontrib>Wu, Tangqing ; Sun, Cheng ; Ke, Wei</creatorcontrib><description>Although many mechanisms have been proposed to explain the microbiologically assisted cracking (MAC) of steel and copper, a theoretical interpretation is necessary. In this paper, we attempt to give a theoretical interpretation of sulfate/nitrate reducing bacteria (SRB/NRB)-assisted cracking using Ee-pH diagrams. Under the combined actions of SRB/NRB and external stress, the cell potential (Ecell) and the corrosion current density of the corrosion reaction increase, such that the corrosion reactions become more thermodynamically favorable. This is the nature of MAC. Nitrate is a far more potent oxidant than sulfate, and thus, the NRB-assisted cracking of iron is a more thermodynamically favorable process than the SRB-assisted cracking. Furthermore, the thermodynamic interpretation is attempted to implicate into the classical stress corrosion cracking mechanisms of pipeline steel.
•Ee-pH diagrams are used to interpret microbiologically assisted cracking.•The cell potential increases under the synergistic effect of SRB/NRB and stress.•NRB-assisted cracking is a more potent corrosion process.</description><identifier>ISSN: 1567-5394</identifier><identifier>EISSN: 1878-562X</identifier><identifier>DOI: 10.1016/j.bioelechem.2017.11.007</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Ee-pH diagram ; Microbiologically induced corrosion ; Nitrate-reducing bacteria ; Stress corrosion ; Sulfate-reducing bacteria</subject><ispartof>Bioelectrochemistry (Amsterdam, Netherlands), 2018-04, Vol.120, p.57-65</ispartof><rights>2017 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-0915-4554</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.bioelechem.2017.11.007$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Wu, Tangqing</creatorcontrib><creatorcontrib>Sun, Cheng</creatorcontrib><creatorcontrib>Ke, Wei</creatorcontrib><title>Interpreting microbiologically assisted cracking with Ee-pH diagrams</title><title>Bioelectrochemistry (Amsterdam, Netherlands)</title><description>Although many mechanisms have been proposed to explain the microbiologically assisted cracking (MAC) of steel and copper, a theoretical interpretation is necessary. In this paper, we attempt to give a theoretical interpretation of sulfate/nitrate reducing bacteria (SRB/NRB)-assisted cracking using Ee-pH diagrams. Under the combined actions of SRB/NRB and external stress, the cell potential (Ecell) and the corrosion current density of the corrosion reaction increase, such that the corrosion reactions become more thermodynamically favorable. This is the nature of MAC. Nitrate is a far more potent oxidant than sulfate, and thus, the NRB-assisted cracking of iron is a more thermodynamically favorable process than the SRB-assisted cracking. Furthermore, the thermodynamic interpretation is attempted to implicate into the classical stress corrosion cracking mechanisms of pipeline steel.
•Ee-pH diagrams are used to interpret microbiologically assisted cracking.•The cell potential increases under the synergistic effect of SRB/NRB and stress.•NRB-assisted cracking is a more potent corrosion process.</description><subject>Ee-pH diagram</subject><subject>Microbiologically induced corrosion</subject><subject>Nitrate-reducing bacteria</subject><subject>Stress corrosion</subject><subject>Sulfate-reducing bacteria</subject><issn>1567-5394</issn><issn>1878-562X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpFkDFPwzAQRi0EEqXwHzKyJPia2I5HKIVWqsTSgc1y7Uvr4iTFTkH8exwVieluePr09AjJgBZAgT8ciq3r0aPZY1vMKIgCoKBUXJAJ1KLOGZ-9X6afcZGzUlbX5CbGA6W0BsEm5HnVDRiOAQfX7bLWmdCnPd_vnNHe_2Q6RhcHtJkJ2nyMzLcb9tkC8-Mys07vgm7jLblqtI9493enZPOy2MyX-frtdTV_XOcoZ3XOqeXWsC2rZZMEhbAaDOWCSikrziQagY2tOCCrBDcNtZKhLCUm1xIqXk7J_Xn2GPrPE8ZBtS4a9F532J-iAsmlLAXldUKfzigmnS-HQUXjsDNoXUAzKNs7BVSNBdVB_RdUY0EFoJJg-Qsp4Gig</recordid><startdate>201804</startdate><enddate>201804</enddate><creator>Wu, Tangqing</creator><creator>Sun, Cheng</creator><creator>Ke, Wei</creator><general>Elsevier B.V</general><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0915-4554</orcidid></search><sort><creationdate>201804</creationdate><title>Interpreting microbiologically assisted cracking with Ee-pH diagrams</title><author>Wu, Tangqing ; Sun, Cheng ; Ke, Wei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-e928-60d6dc5b589f00777da1c06709994659ec7efd461e5476cf0d95e939e00831463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Ee-pH diagram</topic><topic>Microbiologically induced corrosion</topic><topic>Nitrate-reducing bacteria</topic><topic>Stress corrosion</topic><topic>Sulfate-reducing bacteria</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Tangqing</creatorcontrib><creatorcontrib>Sun, Cheng</creatorcontrib><creatorcontrib>Ke, Wei</creatorcontrib><collection>MEDLINE - Academic</collection><jtitle>Bioelectrochemistry (Amsterdam, Netherlands)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Tangqing</au><au>Sun, Cheng</au><au>Ke, Wei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interpreting microbiologically assisted cracking with Ee-pH diagrams</atitle><jtitle>Bioelectrochemistry (Amsterdam, Netherlands)</jtitle><date>2018-04</date><risdate>2018</risdate><volume>120</volume><spage>57</spage><epage>65</epage><pages>57-65</pages><issn>1567-5394</issn><eissn>1878-562X</eissn><abstract>Although many mechanisms have been proposed to explain the microbiologically assisted cracking (MAC) of steel and copper, a theoretical interpretation is necessary. In this paper, we attempt to give a theoretical interpretation of sulfate/nitrate reducing bacteria (SRB/NRB)-assisted cracking using Ee-pH diagrams. Under the combined actions of SRB/NRB and external stress, the cell potential (Ecell) and the corrosion current density of the corrosion reaction increase, such that the corrosion reactions become more thermodynamically favorable. This is the nature of MAC. Nitrate is a far more potent oxidant than sulfate, and thus, the NRB-assisted cracking of iron is a more thermodynamically favorable process than the SRB-assisted cracking. Furthermore, the thermodynamic interpretation is attempted to implicate into the classical stress corrosion cracking mechanisms of pipeline steel.
•Ee-pH diagrams are used to interpret microbiologically assisted cracking.•The cell potential increases under the synergistic effect of SRB/NRB and stress.•NRB-assisted cracking is a more potent corrosion process.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.bioelechem.2017.11.007</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-0915-4554</orcidid></addata></record> |
fulltext | fulltext |
identifier | ISSN: 1567-5394 |
ispartof | Bioelectrochemistry (Amsterdam, Netherlands), 2018-04, Vol.120, p.57-65 |
issn | 1567-5394 1878-562X |
language | eng |
recordid | cdi_proquest_miscellaneous_1969937068 |
source | Elsevier ScienceDirect Journals Complete |
subjects | Ee-pH diagram Microbiologically induced corrosion Nitrate-reducing bacteria Stress corrosion Sulfate-reducing bacteria |
title | Interpreting microbiologically assisted cracking with Ee-pH diagrams |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T22%3A26%3A21IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_elsev&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Interpreting%20microbiologically%20assisted%20cracking%20with%20Ee-pH%20diagrams&rft.jtitle=Bioelectrochemistry%20(Amsterdam,%20Netherlands)&rft.au=Wu,%20Tangqing&rft.date=2018-04&rft.volume=120&rft.spage=57&rft.epage=65&rft.pages=57-65&rft.issn=1567-5394&rft.eissn=1878-562X&rft_id=info:doi/10.1016/j.bioelechem.2017.11.007&rft_dat=%3Cproquest_elsev%3E1969937068%3C/proquest_elsev%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1969937068&rft_id=info:pmid/&rft_els_id=S1567539417304796&rfr_iscdi=true |