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Evolution of REDOX Tank Waste Plumes in Hanford Vadose Zone
Jiamin Wan
Tetsu K. Tokunaga
Joern T. Larsen
Zuoping Zheng
其他書名
A Conceptual Model Developed Through Reactive Transport Studies
出版
United States. Department of Energy. Office of Science
, 2003
URL
http://books.google.com.hk/books?id=xXnxjwEACAAJ&hl=&source=gbs_api
註釋
Decisions on remedial actions for leakage of highly radioactive tank waste solutions at the Hanford Site will depend highly on understanding of the current distribution and future migration of contaminants in the subsurface. The geochemical data obtained from borehole drilling at SX tank farm in the 200 Area, by Tank Farm Vadose Zone Characterization Project of the U.S. Department of Energy, revealed valuable insights as well as some results that challenge our basic understanding of waste plume evolution. In response to these needs and challenges, we have been investigating reactive transport of tank waste solutions in Hanford sediments through laboratory column experiments combined with geochemical modeling. Analyses of solid and aqueous phases within different zones of contaminant plumes, along with thermodynamic predictions provide the basis for our conceptual model. This model reveals the primary processes controlling evolution of REDOX waste plumes in the Hanford vadose zone.
