U.S. Department of Energy

Pacific Northwest National Laboratory

Outcomes: Correlation of Colloidal Interactions and Macroscopic Rheology in Concentrated Electrolyte Solutions

Principal Investigator: Jaehun Chun

Completed: FY18

Outcomes: This project has provided a scientific knowledge base to accomplish safe and efficient nuclear waste treatment processing, in addition to proper design and operation of waste disposition processes. The project created a customized atomic force microscopy/dynamic force spectroscopy capability for direct measurement of boehmite particles, as well as a particle-based simulation framework to predict bulk suspension rheology. Combined with a project-developed in situ scanning electron microscope capability for particle aggregation/identification, collectively these advances provide basic understanding of how particle interactions are correlated to long-range ordering of colloidal waste particles and bulk rheology in tank-waste-relevant systems.

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