You need JavaScript to view this

Modelling gas generation in radioactive waste repositories

Abstract

In a repository containing low- and intermediate-level waste, gas generation will occur principally by the coupled processes of metal corrosion and microbial degradation of cellulosic waste. This paper describes a mathematical model designed to address gas generation by these mechanisms. The metal corrosion model incorporates a three-stage process encompassing both aerobic and anaerobic corrosion regimes; the microbial degradation model simulates the activities of eight different microbial populations, which are maintained as functions both of pH and of the concentrations of particular chemical species. Gas concentrations have been measured over a period of three years in large-scale drum experiments designed to simulate repository conditions. Model predictions are confirmed against the experimental measurements, and a prediction is then made of gas concentrations and generation rates over an assessment period of one million years in a radioactive waste repository. (Author).
Authors:
Publication Date:
Jul 01, 1992
Product Type:
Technical Report
Report Number:
AEA-D and R-0891
Reference Number:
SCA: 052002; PA: AIX-25:011461; EDB-94:034512; ERA-19:008226; NTS-94:015195; SN: 94001152578
Resource Relation:
Other Information: PBD: Jul 1992
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; GASEOUS WASTES; SIMULATION; RADIOACTIVE WASTES; AEROBIC CONDITIONS; ANAEROBIC CONDITIONS; BIODEGRADATION; CELLULOSE; EXPERIMENTAL DATA; G CODES; 052002; WASTE DISPOSAL AND STORAGE
OSTI ID:
10127270
Research Organizations:
AEA Decommissioning and Radwaste, Harwell (United Kingdom)
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Other: ON: DE94614101; TRN: GB9303995011461
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
GBN
Size:
29 p.
Announcement Date:
Jul 04, 2005

Citation Formats

Agg, P J. Modelling gas generation in radioactive waste repositories. United Kingdom: N. p., 1992. Web.
Agg, P J. Modelling gas generation in radioactive waste repositories. United Kingdom.
Agg, P J. 1992. "Modelling gas generation in radioactive waste repositories." United Kingdom.
@misc{etde_10127270,
title = {Modelling gas generation in radioactive waste repositories}
author = {Agg, P J}
abstractNote = {In a repository containing low- and intermediate-level waste, gas generation will occur principally by the coupled processes of metal corrosion and microbial degradation of cellulosic waste. This paper describes a mathematical model designed to address gas generation by these mechanisms. The metal corrosion model incorporates a three-stage process encompassing both aerobic and anaerobic corrosion regimes; the microbial degradation model simulates the activities of eight different microbial populations, which are maintained as functions both of pH and of the concentrations of particular chemical species. Gas concentrations have been measured over a period of three years in large-scale drum experiments designed to simulate repository conditions. Model predictions are confirmed against the experimental measurements, and a prediction is then made of gas concentrations and generation rates over an assessment period of one million years in a radioactive waste repository. (Author).}
place = {United Kingdom}
year = {1992}
month = {Jul}
}