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Cynthia Dean
Graduate Research Assistant
Mentor: Paul Reimus
Research Area: Uranium Transport in Saturated Zone at Yucca Mountain.
Education: Master of Science in Chemical Engineering, University of New Mexico, December, 2005.
Bachelor of Science in Environmental Chemistry, University of Houston-Clear Lake, May 2001
Cindy is currently a PhD student in the Chemical and Nuclear Engineering Department at the University of New Mexico. Cindy started at Los Alamos National Laboratory in July 2001 as a Post Baccalaureate working on the Busted Butte Project under Jake Turin, Armand Groffman and Laura Wolfsberg. She has been a graduate research assistant with the Geochemistry Team under mentor Paul Reimus since July, 2002. As a part of her graduate research, Cindy has developed a semi-batch process to study the long-term desorption of uranium and neptunium from alluvium. The process utilizes batch sorption to saturate potential sorption sites with a radionuclide tracer and a subsequent flow process to desorb the radionuclide from the alluvium. The data obtained from this method is used to study in detail the range of desorption rate constants for radionuclides desorbing from alluvium, which in turn can be used to study the kinetically controlled mechanisms of sorption and desorption of radionuclides in heterogeneous materials. This research can improve our understanding of subsurface fate and transport of radionuclides at long distance and time scales and increase confidence in laboratory studies to accurately describe field transport behavior
Master’s Thesis:
Scism, Cindy D., “Sorption and Desorption Behavior of Uranium in Transport Studies Using Yucca Mountain Alluvium”, Master’s Thesis. December, 2005, submitted in partial fulfillment of the requirements for the degree of Master of Science Chemical Engineering, University of New Mexico, Albuquerque, NM. LA-14271-T http://library.lanl.gov/cgi-bin/getfile?LA-14271-T.pdf -- 3.7 MB { Access restricted to selected government agencies }
Proceedings and Abstract:
Busted Butte Phase 2; Analysis of post-test mineback and overcore rock samples
Groffman, A R; Turin, H J; McGraw, M A; Jones, Catherine L; Scism, C D; Soll, W E
Abstracts with Programs - Geological Society of America, vol.34, no.6, pp.236, Oct 2002
Modeling of early breakthrough behavior of neptunium and uranium in column transport experiments in Yucca Mountain alluvium
Reimus, Paul W; Ding, Mei; Scism, C D
Abstracts with Programs - Geological Society of America, vol.36, no.5, pp.109, Nov 2004
Scism, Cindy D., Paul W. Reimus and Mei Ding, “Uranium and Neptunium Desorption from Yucca Mountain Alluvium”, Proceedings of the 11th International High-level Radioactive Waste Management Conference (IHLRWM), April 30-May 4, 2006, Las Vegas Nevada. ISBN: 0-89448-691-8
Sorption/desorption behavior of uranium in Yucca Mountain alluvium
Scism, C D; Reimus, Paul W; Ding, Mei; Kinkead, Heather L
Abstracts with Programs - Geological Society of America, vol.36, no.5, pp.109, Nov 2004
Sorption/desorption behavior of uranium in Yucca Mountain alluvium.
Scism, CD; Reimus, PW; Ding, M
Source: Abstracts of Papers American Chemical Society; MAR 28 2004; v.227, no.Part 2, p.U88-U89; Conference: 227th National Meeting of the American-Chemical Society; March 28 -April 01, 2004; Anaheim, CA, USA
Sorption behavior of uranium onto Yucca Mountain alluvium
Scism, C D; Ding, Mei; Reimus, Paul W
Abstracts with Programs - Geological Society of America, vol.34, no.6, pp.235, Oct 2002
The role of clay minerals in Yucca Mountain Volcanics and alluvium on transport of radionuclides
Ding, Mei; Reimus, Paul W; Chipera, Steve J; Scism, C D; Kinkead, Heather L
Abstracts with Programs - Geological Society of America, vol.36, no.5, pp.297, Nov 2004
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