Abstract
Experimental and Modelling studies have been used to investigate the biogeochemical processes occurring at the interface zone between the near-field and far-field of the Drigg Low-Level radioactive Waste (LLW) trenches. These have led to a conceptual model of interface biogeochemistry, which has subsequently been modelled by the BNFL code known as the Generalised Repository Model (GRM). GRM simulations suggest that as organic rich leachate migrates into the far-field, iron III minerals such as iron hydroxide will dissolve, and reduced iron minerals such as siderite will precipitate due to microbial processes. Batch and column experimental studies have verified this conceptual understanding. Some unexpected processes, such as the presence of nitrate enhancing sulphate reduction, were also observed.
| Language | English |
|---|---|
| Pages | 835-840 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 807 |
| DOIs | |
| Publication status | Published - 2004 |
| Externally published | Yes |
| Event | Scientific Basis for Nuclear Waste Management XXVII - Kalmar, Sweden Duration: 15 Jun 2003 → 19 Jun 2003 Conference number: XXVII |
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Near-field/Far-field Interface of a Near-Surface Low-Level Radioactive Waste Site. / Beadle, I. R.; Graham, J.; Boult, S.; Hand, V. L.; Warwick, Peter; Randall, M. G.; Trivedi, D. P.; Humphreys, P. N.
In: Materials Research Society Symposium - Proceedings, Vol. 807, 2004, p. 835-840.Research output: Contribution to journal › Article
TY - JOUR
T1 - Near-field/Far-field Interface of a Near-Surface Low-Level Radioactive Waste Site
AU - Beadle, I. R.
AU - Graham, J.
AU - Boult, S.
AU - Hand, V. L.
AU - Warwick, Peter
AU - Randall, M. G.
AU - Trivedi, D. P.
AU - Humphreys, P. N.
PY - 2004
Y1 - 2004
N2 - Experimental and Modelling studies have been used to investigate the biogeochemical processes occurring at the interface zone between the near-field and far-field of the Drigg Low-Level radioactive Waste (LLW) trenches. These have led to a conceptual model of interface biogeochemistry, which has subsequently been modelled by the BNFL code known as the Generalised Repository Model (GRM). GRM simulations suggest that as organic rich leachate migrates into the far-field, iron III minerals such as iron hydroxide will dissolve, and reduced iron minerals such as siderite will precipitate due to microbial processes. Batch and column experimental studies have verified this conceptual understanding. Some unexpected processes, such as the presence of nitrate enhancing sulphate reduction, were also observed.
AB - Experimental and Modelling studies have been used to investigate the biogeochemical processes occurring at the interface zone between the near-field and far-field of the Drigg Low-Level radioactive Waste (LLW) trenches. These have led to a conceptual model of interface biogeochemistry, which has subsequently been modelled by the BNFL code known as the Generalised Repository Model (GRM). GRM simulations suggest that as organic rich leachate migrates into the far-field, iron III minerals such as iron hydroxide will dissolve, and reduced iron minerals such as siderite will precipitate due to microbial processes. Batch and column experimental studies have verified this conceptual understanding. Some unexpected processes, such as the presence of nitrate enhancing sulphate reduction, were also observed.
UR - http://www.scopus.com/inward/record.url?scp=12844276569&partnerID=8YFLogxK
UR - https://www.cambridge.org/core/journals/mrs-online-proceedings-library-archive
U2 - 10.1557/PROC-807-835
DO - 10.1557/PROC-807-835
M3 - Article
VL - 807
SP - 835
EP - 840
JO - Materials Research Society Symposium - Proceedings
T2 - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
SN - 0272-9172
ER -