FINAL TECHNICAL REPORT to the DOE NABIR PROGRAM
This project was funded to Dr. Mary Neu (LANL) and to Dr. Patricia Holden (UCSB) during the period 10/01/04-09/30/07 with the overall objective of, as stated in the proposal, to investigate how key reactions, which are known to affect major redox-active transition metals such as Fe and Mn, can affect Pu speciation and environmental mobility. The goals included investigating a) bacterial accumulation and immobilization of Pu species by Pseudomonas putida biofilm formation, and b) bacterial mineralization and immobilization via direct enzymatic and indirect biogeochemical reduction of Pu species by Geobacter metallireducens. Through a combination of aqueous chemical, radioanalytical, spectroscopic and microscopic analyses, Pu speciation and solution/solid phase distributions were to be characterized. The combination of biotransformation and biogeochemical research was aimed at filling significant gaps in the scientific basis for monitored natural attenuation and in situ stabilization of widespread and problematic Pu contamination, as well as providing immediately useful data to modeling and risk assessment efforts.
- Research Organization:
- Univ. of California, Santa Barbara, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- FG02-05ER63949
- OSTI ID:
- 963364
- Report Number(s):
- DOE/ER/63949-3 Final Report; ER63949-1025143-0010966
- Country of Publication:
- United States
- Language:
- English
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