College of Engineering
Ph.D., Environmental Engineering & Earth Science, Clemson University, 2013
M.S., Environmental Engineering & Earth Science, Clemson University, 2008
B.S., Chemistry, Radford University, 2006
Dr. Hixon received her Ph.D. and M.S. degrees in Environmental Engineering & Earth Science from Clemson University in 2013 and 2008, respectively and her B.S. degree in Chemistry from Radford University in 2006. While a doctoral candidate at Clemson University, she also held a position at the U.S. Nuclear Regulatory Commission in the Office of Federal and State Materials and Environmental Management Programs, where she supported the work of the Performance Assessment and Environmental Review branches. She is currently a member of the Health Physics Society, the American Chemical Society, and Sigma Xi.
Baumer, T.; Kay, P.; Hixon, A.E. Comparison of europium and neptunium sorption to aluminum (hydr)oxide minerals. Chemical Geology. 2017, in press. DOI: 10.1016/j.chemgeo.2017.02.006.
Hixon, A.E.; Powell, B.A. Observed changes in the mechanism and rates of Pu(V) reduction on hematite as a function of total plutonium concentration. Environmental Science & Technology. 2014, 48, 9255-9262. DOI: 10.1020/es5013752.
Hixon, A.E.; Arai, Y.; Powell, B.A. Examination of the effect of alpha radiolysis on plutonium(V) sorption to quartz using multiple plutonium isotopes. Journal of Colloid and Interface Science. 2013, 403, 105-112. DOI: 10.1016/j.jcis.2013.04.007.
Hixon, A.E.; DiPrete, D.P.; DeVol, T.A. Development of a colorimetric test for quantification of uranium in drinking water. Journal of Radioanalytical and Nuclear Chemistry. 2013, 298, 419-427. DOI: 10.1007/s10967-012-2385-7.
Hixon, A.E.; Hu, Y.J.; Kaplan, D.I.; Kukkadapu, R.K.; Nitsche, H.; Qafoku, O.; Powell, B.A. Influence of iron redox transformations on plutonium sorption to sediments. Radiochimica Acta. 2010, 98, 685-692. DOI: 10.1524/ract.2010.1769.
Alderman, B.A.; Ratliff, A.E., Wirgau, J.I. A mechanistic study of ferrioxamine B reduction by the biological reducing agent ascorbate in the presence of an iron(II) chelator. Inorganica Chimica Acta. 2009, 362, 1787-1792. DOI: 10.1016/j.ica.2008.08.024.
Huang, F.H.; Slebodnick, C.; Ratliff, A.E.; Gibson, H.W. Bis(m-phenylene)-32-crown 10/monopyridinium pseudorotaxanes. Tetrahedron Letters. 2005, 46, 6019-6022. DOI: 10.1016/j.tetlet.2005.07.011.
Gibson, H.W.; Wang, H.; Bonrad, K.; Jones, J.W.; Slebodnick, C.; Zackharow, L.N.; Rheingold, A.L.; Habenicht, B.; Lobue, P.; Ratliff, A.E. Regioselective routes to disubstituted dibenzo crown ethers and their complexations. Organic & Biomolecular Chemistry. 2005, 3, 2114-2121. DOI: 10.1039/B503072M.
DeVol, T.A.; Hixon, A.E.; DiPrete, D.P. 2012. Colorimetric detection of uranium in water. U.S. Patent 8,133,740, filed August 19, 2009, and issued March 13, 2012.
Summary of Activities/Interests
The overarching research interests of the Hixon research group revolve around how processes at the mineral-water interface control actinide behavior. Actinides are present in the environment as a result of nuclear weapons production and nuclear fuel disposition and pose a long-term environmental concern due to their toxicity and long half-lives. Understanding and predicting their mobility is important for risk management. By using a combination of wet chemistry, instrumental, and modeling techniques, the Hixon research group is able to understand actinide aqueous speciation, the properties of mineral surfaces, and how the two interact. Specific research interests include the development of comprehensive and mechanistically accurate surface-complexation models for actinide sorption to pure mineral phases and 1D advective-dispersive transport modeling of uranium in-situ recovery operations.