Microbially Influenced Corrosion in Epoxy-Ceramic Coated Carbon-Steel Cooler

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F25%3A00014442" target="_blank" >RIV/46747885:24620/25:00014442 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43933540

Výsledek na webu

<a href="https://doi.org/10.1002/maco.202414671" target="_blank" >https://doi.org/10.1002/maco.202414671</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/maco.202414671" target="_blank" >10.1002/maco.202414671</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microbially Influenced Corrosion in Epoxy-Ceramic Coated Carbon-Steel Cooler

Popis výsledku v původním jazyce

Crevice corrosion and corrosion products were observed during the maintenance of a carbon steel cooler repeatedly treated with a commercially produced anticorrosive coating. This prompted a case study to investigate possible microbially influenced corrosion (MIC) in a system operating at moderate temperatures with treated, chlorinated cooling water. Cooling water, corrosion products, sediments, and swabs were analyzed for microstructural, chemical and microbiological characteristics. The cooling water contained sufficient nutrients to support microbial growth, along with chlorides that could compromise material integrity. Chemical analysis of the corrosion products revealed elevated sulfur levels, suggesting microbial activity. Molecular-genetic analysis showed a significant abundance of sulfur-oxidizing, nitrate-reducing, sulfate-reducing, and methylotrophic bacteria in the corrosion products. Our results indicate that the synergistic activity of these bacteria was the primary cause of MIC in the carbon steel cooling system, despite the use of anticorrosive treatments, highlighting the need to revise the mitigation strategy.

Název v anglickém jazyce

Microbially Influenced Corrosion in Epoxy-Ceramic Coated Carbon-Steel Cooler

Popis výsledku anglicky

Crevice corrosion and corrosion products were observed during the maintenance of a carbon steel cooler repeatedly treated with a commercially produced anticorrosive coating. This prompted a case study to investigate possible microbially influenced corrosion (MIC) in a system operating at moderate temperatures with treated, chlorinated cooling water. Cooling water, corrosion products, sediments, and swabs were analyzed for microstructural, chemical and microbiological characteristics. The cooling water contained sufficient nutrients to support microbial growth, along with chlorides that could compromise material integrity. Chemical analysis of the corrosion products revealed elevated sulfur levels, suggesting microbial activity. Molecular-genetic analysis showed a significant abundance of sulfur-oxidizing, nitrate-reducing, sulfate-reducing, and methylotrophic bacteria in the corrosion products. Our results indicate that the synergistic activity of these bacteria was the primary cause of MIC in the carbon steel cooling system, despite the use of anticorrosive treatments, highlighting the need to revise the mitigation strategy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/LUC23160" target="_blank" >LUC23160: Vliv mikrobiální aktivity na životnost kontejneru pro hlubinné úložiště radioaktivního odpadu</a><br>

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials and Corrosion>

ISSN

0947-5117

e-ISSN

—

Svazek periodika

76

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

1154-1168

Kód UT WoS článku

001454350300001

EID výsledku v databázi Scopus

2-s2.0-105000891762