Microbial fouling and corrosion of carbon steel in deep anoxic alkaline groundwater

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Understanding the corrosion of carbon steel materials of low and intermediate level radioactive waste under repository conditions is crucial to ensure the safe storage of radioactive contaminated materials. The waste will be in contact with the concrete of repository silos and storage containers, and eventually with groundwater. In this study, the corrosion of carbon steel under repository conditions as well as the microbial community forming biofilm on the carbon steel samples, consisting of bacteria, archaea, and fungi, was studied over a period of three years in a groundwater environment with and without inserted concrete. The number of biofilm forming bacteria and archaea was 1,000-fold lower, with corrosion rates 620-times lower in the presence of concrete compared to the natural groundwater environment. However, localized corrosion was detected in the concrete–groundwater environment indicating the presence of local microenvironments where the conditions for pitting corrosion were favorable.

Original languageEnglish
Pages (from-to)195-209
Number of pages15
JournalBiofouling
Volume33
Issue number2
DOIs
Publication statusPublished - 7 Feb 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Corrosion
Steel
corrosion
Groundwater
fouling
steel
groundwater
Carbon
repository
carbon
Archaea
Biofilms
biofilm
Radioactive Waste
Bacteria
bacterium
bacteria
radioactive waste
microbial communities
containers

Keywords

  • MIC
  • microbially induced corrosion
  • carbon steel
  • concrete; deep biosphere
  • groundwater
  • concrete
  • deep biosphere

Cite this

@article{b7d3e381cbaa4c3c8dce7468d56213b7,
title = "Microbial fouling and corrosion of carbon steel in deep anoxic alkaline groundwater",
abstract = "Understanding the corrosion of carbon steel materials of low and intermediate level radioactive waste under repository conditions is crucial to ensure the safe storage of radioactive contaminated materials. The waste will be in contact with the concrete of repository silos and storage containers, and eventually with groundwater. In this study, the corrosion of carbon steel under repository conditions as well as the microbial community forming biofilm on the carbon steel samples, consisting of bacteria, archaea, and fungi, was studied over a period of three years in a groundwater environment with and without inserted concrete. The number of biofilm forming bacteria and archaea was 1,000-fold lower, with corrosion rates 620-times lower in the presence of concrete compared to the natural groundwater environment. However, localized corrosion was detected in the concrete–groundwater environment indicating the presence of local microenvironments where the conditions for pitting corrosion were favorable.",
keywords = "MIC, microbially induced corrosion, carbon steel, concrete; deep biosphere, groundwater, concrete, deep biosphere",
author = "Pauliina Rajala and Malin Bomberg and Mikko Veps{\"a}l{\"a}inen and Leena Carp{\'e}n",
year = "2017",
month = "2",
day = "7",
doi = "10.1080/08927014.2017.1285914",
language = "English",
volume = "33",
pages = "195--209",
journal = "Biofouling",
issn = "0892-7014",
publisher = "Taylor & Francis",
number = "2",

}

Microbial fouling and corrosion of carbon steel in deep anoxic alkaline groundwater. / Rajala, Pauliina; Bomberg, Malin; Vepsäläinen, Mikko; Carpén, Leena.

In: Biofouling, Vol. 33, No. 2, 07.02.2017, p. 195-209.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Microbial fouling and corrosion of carbon steel in deep anoxic alkaline groundwater

AU - Rajala, Pauliina

AU - Bomberg, Malin

AU - Vepsäläinen, Mikko

AU - Carpén, Leena

PY - 2017/2/7

Y1 - 2017/2/7

N2 - Understanding the corrosion of carbon steel materials of low and intermediate level radioactive waste under repository conditions is crucial to ensure the safe storage of radioactive contaminated materials. The waste will be in contact with the concrete of repository silos and storage containers, and eventually with groundwater. In this study, the corrosion of carbon steel under repository conditions as well as the microbial community forming biofilm on the carbon steel samples, consisting of bacteria, archaea, and fungi, was studied over a period of three years in a groundwater environment with and without inserted concrete. The number of biofilm forming bacteria and archaea was 1,000-fold lower, with corrosion rates 620-times lower in the presence of concrete compared to the natural groundwater environment. However, localized corrosion was detected in the concrete–groundwater environment indicating the presence of local microenvironments where the conditions for pitting corrosion were favorable.

AB - Understanding the corrosion of carbon steel materials of low and intermediate level radioactive waste under repository conditions is crucial to ensure the safe storage of radioactive contaminated materials. The waste will be in contact with the concrete of repository silos and storage containers, and eventually with groundwater. In this study, the corrosion of carbon steel under repository conditions as well as the microbial community forming biofilm on the carbon steel samples, consisting of bacteria, archaea, and fungi, was studied over a period of three years in a groundwater environment with and without inserted concrete. The number of biofilm forming bacteria and archaea was 1,000-fold lower, with corrosion rates 620-times lower in the presence of concrete compared to the natural groundwater environment. However, localized corrosion was detected in the concrete–groundwater environment indicating the presence of local microenvironments where the conditions for pitting corrosion were favorable.

KW - MIC

KW - microbially induced corrosion

KW - carbon steel

KW - concrete; deep biosphere

KW - groundwater

KW - concrete

KW - deep biosphere

UR - http://www.scopus.com/inward/record.url?scp=85012045835&partnerID=8YFLogxK

U2 - 10.1080/08927014.2017.1285914

DO - 10.1080/08927014.2017.1285914

M3 - Article

VL - 33

SP - 195

EP - 209

JO - Biofouling

JF - Biofouling

SN - 0892-7014

IS - 2

ER -