Microbial degradation of low-level radioactive waste in repository conditions

Minna Vikman (Corresponding author), Kaisa Marjamaa, Merja Itävaara, Mikko Nykyri, Joe Small, Nina Paaso

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

In Finland low-level radioactive waste (LLW), arising from the operation of nuclear power plants, includes in addition to scrap metals considerable amounts of paper sheets, cardboard, cotton gloves and plastics. The microbiological degradation of cellulosic materials in anoxic conditions can result in gas generation and can also accelerate corrosion, deteriorate the performance of multi-barrier systems, and enhance the mobility of radionuclides from the repository to the surrounding environment. The Gas Generation Experiment (GGE) has been established in 1997 to examine gas generation from LLW in TVO's final disposal repository for operational LLW and ILW in Olkiluoto, Finland. The GGE has been monitored for generated gas, water chemistry and microbiology. The aim of our study was to examine microbial communities in the GGE using molecular technologies including quantitative PCR and high-throughput sequencing.Heterogeneous chemical conditions in the GGE created optimal niches for microbial action and gas generation, which started approximately after one year of operation. Our results demonstrate that LLW is converted methane and carbon dioxide as a successive action of complex microbial consortia. The function of most relevant microbial groups influencing the gas generation will be discussed.
Original languageEnglish
Title of host publicationGoldschmidt Conference 2017
PublisherEuropean Association of Geochemistry
Number of pages1
Publication statusPublished - 2017
EventGoldschmidt 2017: Annual international conference on geochemistry and related subjects - Paris, France
Duration: 13 Aug 201718 Aug 2017

Conference

ConferenceGoldschmidt 2017
CountryFrance
CityParis
Period13/08/1718/08/17

Fingerprint

repository
radioactive waste
degradation
gas
experiment
microbiology
nuclear power plant
water chemistry
anoxic conditions
radionuclide
cotton
corrosion
microbial community
niche
carbon dioxide
plastic
methane

Keywords

  • radioactive waste
  • biodegradation
  • LLW
  • nuclear waste
  • repository

Cite this

Vikman, M., Marjamaa, K., Itävaara, M., Nykyri, M., Small, J., & Paaso, N. (2017). Microbial degradation of low-level radioactive waste in repository conditions. In Goldschmidt Conference 2017 European Association of Geochemistry.
Vikman, Minna ; Marjamaa, Kaisa ; Itävaara, Merja ; Nykyri, Mikko ; Small, Joe ; Paaso, Nina. / Microbial degradation of low-level radioactive waste in repository conditions. Goldschmidt Conference 2017. European Association of Geochemistry, 2017.
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abstract = "In Finland low-level radioactive waste (LLW), arising from the operation of nuclear power plants, includes in addition to scrap metals considerable amounts of paper sheets, cardboard, cotton gloves and plastics. The microbiological degradation of cellulosic materials in anoxic conditions can result in gas generation and can also accelerate corrosion, deteriorate the performance of multi-barrier systems, and enhance the mobility of radionuclides from the repository to the surrounding environment. The Gas Generation Experiment (GGE) has been established in 1997 to examine gas generation from LLW in TVO's final disposal repository for operational LLW and ILW in Olkiluoto, Finland. The GGE has been monitored for generated gas, water chemistry and microbiology. The aim of our study was to examine microbial communities in the GGE using molecular technologies including quantitative PCR and high-throughput sequencing.Heterogeneous chemical conditions in the GGE created optimal niches for microbial action and gas generation, which started approximately after one year of operation. Our results demonstrate that LLW is converted methane and carbon dioxide as a successive action of complex microbial consortia. The function of most relevant microbial groups influencing the gas generation will be discussed.",
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Vikman, M, Marjamaa, K, Itävaara, M, Nykyri, M, Small, J & Paaso, N 2017, Microbial degradation of low-level radioactive waste in repository conditions. in Goldschmidt Conference 2017. European Association of Geochemistry, Goldschmidt 2017, Paris, France, 13/08/17.

Microbial degradation of low-level radioactive waste in repository conditions. / Vikman, Minna (Corresponding author); Marjamaa, Kaisa; Itävaara, Merja; Nykyri, Mikko; Small, Joe; Paaso, Nina.

Goldschmidt Conference 2017. European Association of Geochemistry, 2017.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

TY - CHAP

T1 - Microbial degradation of low-level radioactive waste in repository conditions

AU - Vikman, Minna

AU - Marjamaa, Kaisa

AU - Itävaara, Merja

AU - Nykyri, Mikko

AU - Small, Joe

AU - Paaso, Nina

N1 - Project: 102432

PY - 2017

Y1 - 2017

N2 - In Finland low-level radioactive waste (LLW), arising from the operation of nuclear power plants, includes in addition to scrap metals considerable amounts of paper sheets, cardboard, cotton gloves and plastics. The microbiological degradation of cellulosic materials in anoxic conditions can result in gas generation and can also accelerate corrosion, deteriorate the performance of multi-barrier systems, and enhance the mobility of radionuclides from the repository to the surrounding environment. The Gas Generation Experiment (GGE) has been established in 1997 to examine gas generation from LLW in TVO's final disposal repository for operational LLW and ILW in Olkiluoto, Finland. The GGE has been monitored for generated gas, water chemistry and microbiology. The aim of our study was to examine microbial communities in the GGE using molecular technologies including quantitative PCR and high-throughput sequencing.Heterogeneous chemical conditions in the GGE created optimal niches for microbial action and gas generation, which started approximately after one year of operation. Our results demonstrate that LLW is converted methane and carbon dioxide as a successive action of complex microbial consortia. The function of most relevant microbial groups influencing the gas generation will be discussed.

AB - In Finland low-level radioactive waste (LLW), arising from the operation of nuclear power plants, includes in addition to scrap metals considerable amounts of paper sheets, cardboard, cotton gloves and plastics. The microbiological degradation of cellulosic materials in anoxic conditions can result in gas generation and can also accelerate corrosion, deteriorate the performance of multi-barrier systems, and enhance the mobility of radionuclides from the repository to the surrounding environment. The Gas Generation Experiment (GGE) has been established in 1997 to examine gas generation from LLW in TVO's final disposal repository for operational LLW and ILW in Olkiluoto, Finland. The GGE has been monitored for generated gas, water chemistry and microbiology. The aim of our study was to examine microbial communities in the GGE using molecular technologies including quantitative PCR and high-throughput sequencing.Heterogeneous chemical conditions in the GGE created optimal niches for microbial action and gas generation, which started approximately after one year of operation. Our results demonstrate that LLW is converted methane and carbon dioxide as a successive action of complex microbial consortia. The function of most relevant microbial groups influencing the gas generation will be discussed.

KW - radioactive waste

KW - biodegradation

KW - LLW

KW - nuclear waste

KW - repository

M3 - Conference abstract in proceedings

BT - Goldschmidt Conference 2017

PB - European Association of Geochemistry

ER -

Vikman M, Marjamaa K, Itävaara M, Nykyri M, Small J, Paaso N. Microbial degradation of low-level radioactive waste in repository conditions. In Goldschmidt Conference 2017. European Association of Geochemistry. 2017