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dc.contributor.authorRogers, Robert D.
dc.contributor.authorHamilton, W. A.
dc.contributor.authorVeeh, Richard Harold
dc.contributor.authorMcConnell, J. W.
dc.date.accessioned2017-11-15T22:54:52Z
dc.date.available2017-11-15T22:54:52Z
dc.date.issued1994
dc.identifier.citationRogers, R.D., W.A. Hamilton, R.H. Veeh, and J.W. McConnell, "Microbially influenced degradation of cement-solidified low-level radioactive waste forms," Third International Symposium on Stabilization/Solidification of Hazardous, Radioactive, and Mixed Waste. November 1-5, 1993. Williamsburg, VA.en_US
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/14020
dc.description.abstractBecause of its apparent structural integrity, cement has been widely used in the United States as a binder to solidify Class B and C low-level radioactive waste (LLW). However, the resulting cement preparations are susceptible to failure due to the actions of stress and environment. This paper contains information on three groups of microorganisms that are associated with the degradation of cement materials : sulfur-oxidizing bacteria (Thiobacillus), nitrifying bacteria (Nitrosomonas and Nitrobacter), and heterotrophic bacteria, which produce organic acids. Preliminary work using laboratory- and vendor-manufactured, simulated waste forms exposed to thiobacilli has shown that microbiologically influenced degradation has the potential to severely compromise the structural integrity of ion-exchange resin and evaporator-bottoms waste that is solidified with cement. In addition, it was found that a significant percentage of calcium was leached from the treated waste forms. Also, the surface pH of the treated specimens was decreased to below 2. These conditions apparently contributed to the physical deterioration of simulated waste forms after 30 to 60 days of exposure.en_US
dc.titleMicrobially influenced degradation of cement-solidified low-level radioactive waste formsen_US
dc.typeArticleen_US
mus.citation.conferenceThird International Symposium on Stabilization/Solidification of Hazardous, Radioactive, and Mixed Waste | November 1-5, 1993 | Williamsburg, VA.en_US
mus.citation.journaltitleProceedings of the Third International Symposium on Stabilization/Solidification of Hazardous, Radioactive, and Mixed Wasteen_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.doi10.1520/stp14108sen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US
mus.data.thumbpage14en_US


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