Microbial degradation of LLW under repository conditions- case TVO

Minna Vikman; Kaisa Marjamaa; Merja Itävaara

Microbial degradation of LLW under repository conditions- case TVO

Minna Vikman^*, Kaisa Marjamaa, Merja Itävaara

^*Corresponding author for this work

BA5203 Metals and materials recovery

Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Scientific

Abstract

In Finland major part of the low level radioactive waste (LLW) is composed of protective plastic sheets, clothing, tools, and towels used during maintenance work. This miscellaneous maintenance waste is compacted in steel drums and deposited 60-110 meters below ground level. 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. Since 1999 gas generation has been rather constant and released gas was mainly composed of methane. The results
obtained by qPCR also revealed that methanogens formed major part of the microbial population in GGE. In addition to anaerobic degradation of organic matter there are also other processes that influence the gas formation, such as corrosion of steel and sulphate reduction by bacteria. Considerable heterogeneity in chemical conditions has been detected in different locations of GGE which can be also seen as differences in microbiological activity and diversity.

Original language	English
Title of host publication	MIND (the Microbiology In Nuclear waste Disposal) Project Annual Meeting 1. Extended Abstracts
Subtitle of host publication	Book of Abstracts
Publisher	European Union
Pages	39-42
Publication status	Published - 2016
MoE publication type	Not Eligible
Event	Microbiology In Nuclear waste Disposal, Project Annual Meeting 1 - Granada, Spain Duration: 1 Apr 2016 → 2 Apr 2016

Conference

Conference	Microbiology In Nuclear waste Disposal, Project Annual Meeting 1
Abbreviated title	MIND
Country/Territory	Spain
City	Granada
Period	1/04/16 → 2/04/16

Keywords

nuclear waste
LLW
biodegradability

Access to Document

http://www.mind15.eu/wp-content/uploads/2016/06/MIND-Abstracts_www.pdf

Cite this

@inbook{81ff30ef55aa4c3488deab6863f685c5,

title = "Microbial degradation of LLW under repository conditions- case TVO",

abstract = "In Finland major part of the low level radioactive waste (LLW) is composed of protective plastic sheets, clothing, tools, and towels used during maintenance work. This miscellaneous maintenance waste is compacted in steel drums and deposited 60-110 meters below ground level. 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. Since 1999 gas generation has been rather constant and released gas was mainly composed of methane. The resultsobtained by qPCR also revealed that methanogens formed major part of the microbial population in GGE. In addition to anaerobic degradation of organic matter there are also other processes that influence the gas formation, such as corrosion of steel and sulphate reduction by bacteria. Considerable heterogeneity in chemical conditions has been detected in different locations of GGE which can be also seen as differences in microbiological activity and diversity.",

keywords = "nuclear waste, LLW, biodegradability",

author = "Minna Vikman and Kaisa Marjamaa and Merja It{\"a}vaara",

note = "Project code: 102432 ; Microbiology In Nuclear waste Disposal, Project Annual Meeting 1, MIND ; Conference date: 01-04-2016 Through 02-04-2016",

year = "2016",

language = "English",

pages = "39--42",

booktitle = "MIND (the Microbiology In Nuclear waste Disposal) Project Annual Meeting 1. Extended Abstracts",

publisher = "European Union",

address = "Luxembourg",

}

Vikman, M , Marjamaa, K & Itävaara, M 2016, Microbial degradation of LLW under repository conditions- case TVO. in MIND (the Microbiology In Nuclear waste Disposal) Project Annual Meeting 1. Extended Abstracts: Book of Abstracts. European Union, pp. 39-42, Microbiology In Nuclear waste Disposal, Project Annual Meeting 1, Granada, Spain, 1/04/16. <http://www.mind15.eu/wp-content/uploads/2016/06/MIND-Abstracts_www.pdf>

Microbial degradation of LLW under repository conditions- case TVO. / Vikman, Minna ; Marjamaa, Kaisa; Itävaara, Merja.
MIND (the Microbiology In Nuclear waste Disposal) Project Annual Meeting 1. Extended Abstracts: Book of Abstracts. European Union, 2016. p. 39-42.

Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Scientific

TY - CHAP

T1 - Microbial degradation of LLW under repository conditions- case TVO

AU - Vikman, Minna

AU - Marjamaa, Kaisa

AU - Itävaara, Merja

N1 - Project code: 102432

PY - 2016

Y1 - 2016

N2 - In Finland major part of the low level radioactive waste (LLW) is composed of protective plastic sheets, clothing, tools, and towels used during maintenance work. This miscellaneous maintenance waste is compacted in steel drums and deposited 60-110 meters below ground level. 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. Since 1999 gas generation has been rather constant and released gas was mainly composed of methane. The resultsobtained by qPCR also revealed that methanogens formed major part of the microbial population in GGE. In addition to anaerobic degradation of organic matter there are also other processes that influence the gas formation, such as corrosion of steel and sulphate reduction by bacteria. Considerable heterogeneity in chemical conditions has been detected in different locations of GGE which can be also seen as differences in microbiological activity and diversity.

AB - In Finland major part of the low level radioactive waste (LLW) is composed of protective plastic sheets, clothing, tools, and towels used during maintenance work. This miscellaneous maintenance waste is compacted in steel drums and deposited 60-110 meters below ground level. 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. Since 1999 gas generation has been rather constant and released gas was mainly composed of methane. The resultsobtained by qPCR also revealed that methanogens formed major part of the microbial population in GGE. In addition to anaerobic degradation of organic matter there are also other processes that influence the gas formation, such as corrosion of steel and sulphate reduction by bacteria. Considerable heterogeneity in chemical conditions has been detected in different locations of GGE which can be also seen as differences in microbiological activity and diversity.

KW - nuclear waste

KW - LLW

KW - biodegradability

M3 - Conference abstract in proceedings

SP - 39

EP - 42

BT - MIND (the Microbiology In Nuclear waste Disposal) Project Annual Meeting 1. Extended Abstracts

PB - European Union

T2 - Microbiology In Nuclear waste Disposal, Project Annual Meeting 1

Y2 - 1 April 2016 through 2 April 2016

ER -

Microbial degradation of LLW under repository conditions- case TVO

Abstract

Conference

Keywords

Access to Document

Fingerprint

Cite this