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 language | English |
|---|---|
| Pages (from-to) | 252-261 |
| Number of pages | 10 |
| Journal | Sensors and Actuators A: Physical |
| Volume | 274 |
| DOIs | |
| Publication status | Published - 1 May 2018 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Copper
- Corrosion monitoring
- Groundwater
- Microbiologically influenced corrosion
- Nuclear waste disposal
Cite this
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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 journal › Article › Scientific › peer-review
TY - JOUR
T1 - Copper corrosion monitoring by electrical resistance probes in anoxic groundwater environment in the presence and absence of sulfate reducing bacteria
AU - Marja-aho, Maija
AU - Rajala, Pauliina
AU - Huttunen-Saarivirta, Elina
AU - Legat, Andraž
AU - Kranjc, Andrej
AU - Kosec, Tadeja
AU - Carpén, Leena
PY - 2018/5/1
Y1 - 2018/5/1
N2 - 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.
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.
KW - Copper
KW - Corrosion monitoring
KW - Groundwater
KW - Microbiologically influenced corrosion
KW - Nuclear waste disposal
UR - http://www.scopus.com/inward/record.url?scp=85044621759&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2018.03.018
DO - 10.1016/j.sna.2018.03.018
M3 - Article
VL - 274
SP - 252
EP - 261
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
SN - 0924-4247
ER -