Copper corrosion monitoring by electrical resistance probes in anoxic groundwater environment in the presence and absence of sulfate reducing bacteria

Maija Marja-aho, Pauliina Rajala, Elina Huttunen-Saarivirta, Andraž Legat, Andrej Kranjc, Tadeja Kosec, Leena Carpén

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

In this study the results from corrosion monitoring of copper in anoxic simulated ground water in the presence and absence of sulfate-reducing bacteria (SRB) enriched from the planned disposal site of high level nuclear waste are presented. Copper electric resistance (ER) probes were applied as a physical tool for monitoring corrosion of copper disposal canister. The results are compared to those obtained by linear polarization resistance (LPR) measurements, conducted for parallel OFP-Cu specimens during the experiments, and by weight loss measurements. ER probe method was the most sensitive to corrosion and gave the most conservative estimation of the lifetime of copper. Independently whether the environment was abiotic or biotic, ER probe data showed relatively similar trends to the results from LPR and weight loss measurements. Difference in sensitivity of the methods arises from different ability to detect pitting corrosion and microbial activities on specimen surfaces in the two environments.

Original languageEnglish
Pages (from-to)252-261
Number of pages10
JournalSensors and Actuators A: Physical
Volume274
DOIs
Publication statusPublished - 1 May 2018
MoE publication typeA1 Journal article-refereed

Fingerprint

Copper corrosion
Acoustic impedance
ground water
electrical resistance
bacteria
Sulfates
Copper
Groundwater
sulfates
Bacteria
corrosion
Corrosion
copper
Monitoring
probes
disposal
linear polarization
Polarization
Radioactive Waste
cans

Keywords

  • Copper
  • Corrosion monitoring
  • Groundwater
  • Microbiologically influenced corrosion
  • Nuclear waste disposal

Cite this

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abstract = "In this study the results from corrosion monitoring of copper in anoxic simulated ground water in the presence and absence of sulfate-reducing bacteria (SRB) enriched from the planned disposal site of high level nuclear waste are presented. Copper electric resistance (ER) probes were applied as a physical tool for monitoring corrosion of copper disposal canister. The results are compared to those obtained by linear polarization resistance (LPR) measurements, conducted for parallel OFP-Cu specimens during the experiments, and by weight loss measurements. ER probe method was the most sensitive to corrosion and gave the most conservative estimation of the lifetime of copper. Independently whether the environment was abiotic or biotic, ER probe data showed relatively similar trends to the results from LPR and weight loss measurements. Difference in sensitivity of the methods arises from different ability to detect pitting corrosion and microbial activities on specimen surfaces in the two environments.",
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Copper corrosion monitoring by electrical resistance probes in anoxic groundwater environment in the presence and absence of sulfate reducing bacteria. / Marja-aho, Maija; Rajala, Pauliina; Huttunen-Saarivirta, Elina; Legat, Andraž; Kranjc, Andrej; Kosec, Tadeja; Carpén, Leena.

In: Sensors and Actuators A: Physical, Vol. 274, 01.05.2018, p. 252-261.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Marja-aho, Maija

AU - Rajala, Pauliina

AU - Huttunen-Saarivirta, Elina

AU - Legat, Andraž

AU - Kranjc, Andrej

AU - Kosec, Tadeja

AU - Carpén, Leena

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AB - In this study the results from corrosion monitoring of copper in anoxic simulated ground water in the presence and absence of sulfate-reducing bacteria (SRB) enriched from the planned disposal site of high level nuclear waste are presented. Copper electric resistance (ER) probes were applied as a physical tool for monitoring corrosion of copper disposal canister. The results are compared to those obtained by linear polarization resistance (LPR) measurements, conducted for parallel OFP-Cu specimens during the experiments, and by weight loss measurements. ER probe method was the most sensitive to corrosion and gave the most conservative estimation of the lifetime of copper. Independently whether the environment was abiotic or biotic, ER probe data showed relatively similar trends to the results from LPR and weight loss measurements. Difference in sensitivity of the methods arises from different ability to detect pitting corrosion and microbial activities on specimen surfaces in the two environments.

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