EVALUATION OF ORGANIC VAPOR RELEASE FROM CEMENT-BASED WASTE FORMS

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A cement based waste form was evaluated to determine the rates at which various organics were released during heating caused by the cementitious heat-of-hydration reaction. Saltstone is a cement-based waste form for the disposal of low-level salt solution. Samples were prepared with either Isopar{reg_sign} L, a long straight chained hydrocarbon, or (Cs,K) tetraphenylborate, a solid that, upon heating, decomposes to benzene and other aromatic compounds. The saltstone samples were heated over a range of temperatures. Periodically, sample headspaces were purged and the organic constituents were captured on carbon beds and analyzed. Isopar{reg_sign} L was released from the saltstone in a ... continued below

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Cozzi, A; Jack Zamecnik, J & Russell Eibling, R September 27, 2006.

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A cement based waste form was evaluated to determine the rates at which various organics were released during heating caused by the cementitious heat-of-hydration reaction. Saltstone is a cement-based waste form for the disposal of low-level salt solution. Samples were prepared with either Isopar{reg_sign} L, a long straight chained hydrocarbon, or (Cs,K) tetraphenylborate, a solid that, upon heating, decomposes to benzene and other aromatic compounds. The saltstone samples were heated over a range of temperatures. Periodically, sample headspaces were purged and the organic constituents were captured on carbon beds and analyzed. Isopar{reg_sign} L was released from the saltstone in a direct relationship to temperature. An equation was developed to correlate the release rate of Isopar{reg_sign} L from the saltstone to the temperature at which the samples were cured. The release of benzene was more complex and relied on both the decomposition of the tetraphenylborate as well as the transport of the manufactured benzene through the curing saltstone. Additional testing with saltstone prepared with different surface area/volume also was performed.

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  • Report No.: WSRC-MS-2006-00139
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 892720
  • Archival Resource Key: ark:/67531/metadc884319

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  • September 27, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 2, 2016, 12:49 p.m.

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Cozzi, A; Jack Zamecnik, J & Russell Eibling, R. EVALUATION OF ORGANIC VAPOR RELEASE FROM CEMENT-BASED WASTE FORMS, article, September 27, 2006; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc884319/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.