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Scot Rassat

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352

Education and Credentials

  • Ph.D., Chemical Engineering, University of Washington, 1994
  • Fifth Year Undergraduate, Chemical Engineering, University of Washington, 1989
  • B.S., Chemistry, Western Washington Univiversity, 1983

PNNL Patents

PNNL Publications

2018

  • Gauglitz P.A., S.D. Rassat, D.T. Linn, C. Bottenus, G.K. Boeringa, C.M. Stewart, and B.J. Riley, et al. 2018. Gas Retention, Gas Release, and Fluidization of Spherical Resorcinol-Formaldehyde (sRF) Ion Exchange Resin. PNNL-27460. Richland, WA: Pacific Northwest National Laboratory.

2017

  • Schonewill P.P., R.L. Russell, R.C. Daniel, H.A. Colburn, S.A. Bryan, P.A. Gauglitz, and S.D. Rassat, et al. 2017. "Low Activity Waste Pretreatment System Bench-Scale Testing: Supporting Integrated Testing and Facility Safety Analyses - 17171." In Proceedings of the 43rd Annual Waste Management Conference (WM 2017): Education & Opportunity in Waste Management, March 5-9, 2017, Phoenix, Arizona, 4, 2694-2708. Tempe, Arizona:Waste Management Symposia, Inc. PNNL-SA-123178.

2015

  • Gauglitz P.A., J.R. Bontha, R.C. Daniel, L.A. Mahoney, S.D. Rassat, B.E. Wells, and J. Bao, et al. 2015. Hydrogen Gas Retention and Release from WTP Vessels: Summary of Preliminary Studies. PNNL-24255. Richland, WA: Pacific Northwest National Laboratory.

2014

  • Choi Y., E. Ronnebro, S.D. Rassat, A.J. Karkamkar, G.D. Maupin, J.D. Holladay, and K.L. Simmons, et al. 2014. "Kinetics Study of Solid Ammonia Borane Hydrogen Release - Modeling and Experimental Validation for Chemical Hydrogen Storage." Physical Chemistry Chemical Physics. PCCP 16, no. 17:7959-7968. PNNL-SA-93992. doi:10.1039/C3CP55280B
  • Rassat S.D., P.A. Gauglitz, L.A. Mahoney, R.P. Pires, D.R. Rector, J.A. Fort, and G.K. Boeringa, et al. 2014. Gas Release Due to Rayleigh-Taylor Instability Within Sediment Layers in Hanford Double-Shell Tanks: Results of Scaled Vessel Experiments, Modeling, and Extrapolation to Full Scale. PNNL-23060 Rev. 1; DSGREP-RPT-002, Rev.1. Richland, WA: Pacific Northwest National Laboratory.

2013

  • Gauglitz P.A., B.E. Wells, W.C. Buchmiller, and S.D. Rassat. 2013. Rayleigh-Taylor Instability within Sediment Layers Due to Gas Retention: Preliminary Theory and Experiments. PNNL-22339 Rev. 0. Richland, WA: Pacific Northwest National Laboratory.
  • Kuhn W.L., D.R. Rector, S.D. Rassat, C.W. Enderlin, M.J. Minette, J.A. Bamberger, and G.B. Josephson, et al. 2013. Scaling Theory for Pulsed Jet Mixed Vessels, Sparging, and Cyclic Feed Transport Systems for Slurries. PNNL-22816. Richland, WA: Pacific Northwest National Laboratory.

2012

  • Devarakonda M.N., K.P. Brooks, E. Ronnebro, and S.D. Rassat. 2012. "Systems Modeling, Simulation and Material Operating Requirements for Chemical Hydride Based Hydrogen Storage." International Journal of Hydrogen Energy 37, no. 3:2779-2793. PNNL-SA-76656. doi:10.1016/j.ijhydene.2011.06.121
  • Devarakonda M.N., K.P. Brooks, E. Ronnebro, S.D. Rassat, and J.D. Holladay. 2012. "Chemical Hydrides for Hydrogen Storage in Fuel Cell Applications." In SAE World Congress and Exhibition, April 24-26, 2012, Detroit, Michigan, SAE Technical Paper 2012-01-1229. Warrendale, Pennsylvania:SAE International. PNNL-SA-83367. doi:10.4271/2012-01-1229

2011

  • Brooks K.P., M.N. Devarakonda, S.D. Rassat, and J.D. Holladay. 2011. "Systems Modeling of Chemical Hydride Hydrogen Storage Materials for Fuel Cell Applications." Journal of Fuel Cell Science and Technology 8, no. 6:Article No. 061021. PNNL-SA-78538. doi:10.1115/1.4004477

2010

  • Brooks K.P., M.N. Devarakonda, S.D. Rassat, D.A. King, and D.R. Herling. 2010. "SYSTEMS MODELING OF AMMONIA BORANE BEAD REACTOR FOR OFF-BOARD REGENERABLE HYDROGEN STORAGE IN PEM FUEL CELL APPLICATIONS." In Proceedings of the ASME 2010 Eighth International Fuel Cell Science, Engineering and Technology Conference (FuelCell2010), 1, 729-734. New York, New York:American Society of Mechanical Engineers. PNNL-SA-71490.
  • Devarakonda M.N., J.D. Holladay, K.P. Brooks, S.D. Rassat, and D.R. Herling. 2010. "Dynamic Modeling and Simulation Based Analysis of an Ammonia Borane (AB) Reactor System for Hydrogen Storage." ECS Transactions 33, no. 1:1959 - 1972. PNNL-SA-73748. doi:10.1149/1.3484687
  • Mahoney L.A., S.D. Rassat, P.W. Eslinger, R.L. Aaberg, P.M. Aker, E.C. Golovich, and B.D. Hanson, et al. 2010. EFRT M-12 Issue Resolution: Caustic-Leach Rate Constants from PEP and Laboratory-Scale Tests. PNNL-18502 Rev 1; WTP-RPT-186 Rev 1. Richland, WA: Pacific Northwest National Laboratory.
  • Rassat S.D., C.L. Aardahl, T. Autrey, and R.S. Smith. 2010. "Thermal Stability of Ammonia Borane: A Case Study for Exothermic Hydrogen Storage Materials." Energy and Fuels 24, no. 4:2596-2606. PNNL-SA-69869. doi:10.1021/ef901430a

2009

  • Aardahl C.L., and S.D. Rassat. 2009. "Overview of Systems Considerations for On-Board Chemical Hydrogen Storage." International Journal of Hydrogen Energy 34, no. 16) (Sp. Iss. SI):6676-6683. PNNL-SA-61558.
  • Aardahl C.L., and S.D. Rassat. 2009. "Overview of Systems Considerations for On-Board Chemical Hydrogen Storage." International Journal of Hydrogen Energy 34, no. 16:6676-6683. PNNL-SA-65741. doi:10.1016/j.ijhydene.2009.06.009
  • Kurath D.E., B.D. Hanson, M.J. Minette, D.L. Baldwin, B.M. Rapko, L.A. Mahoney, and P.P. Schonewill, et al. 2009. Pretreatment Engineering Platform Phase 1 Final Test Report. PNNL-18894; WTP-RPT-197 Rev 0. Richland, WA: Pacific Northwest National Laboratory.
  • Mahoney L.A., S.D. Rassat, P.W. Eslinger, R.L. Aaberg, P.M. Aker, E.C. Golovich, and B.D. Hanson, et al. 2009. EFRT M-12 Issue Resolution: Caustic Leach Rate Constants from PEP and Laboratory-Scale Tests. PNNL-18502. Richland, WA: Pacific Northwest National Laboratory.

2008

  • Heldebrant D.J., A.J. Karkamkar, N.J. Hess, M.E. Bowden, S.D. Rassat, F. Zheng, and K.G. Rappe, et al. 2008. "The Effects of Chemical Additives on the Induction Phase in Solid-State Thermal Decomposition of Ammonia Borane." Chemistry of Materials 20, no. 16:5332-5336. PNNL-SA-60433. doi:10.1021/cm801253u
  • Kuhn W.L., S.T. Arm, J.L. Huckaby, D.E. Kurath, and S.D. Rassat. 2008. Technical Basis of Scaling Relationships for the Pretreatment Engineering Platform. PNNL-16948. Richland, WA: Pacific Northwest National Laboratory.
  • Zheng F., S.D. Rassat, D.J. Heldebrant, D.D. Caldwell, C.L. Aardahl, T. Autrey, and J.C. Linehan, et al. 2008. "Automated gas burette system for evolved hydrogen measurements." Review of Scientific Instruments 79, no. 8:Article no: 084103. PNNL-SA-60596. doi:10.1063/1.2968715

2007

  • Heldebrant D.J., J.C. Linehan, D.M. Camaioni, S.D. Rassat, F. Zheng, and T. Autrey. 2007. "EFFECT OF ADDITIVES ON THE THERMOLYSIS OF AMMONIA BORANE." In 234th American Chemical Society Conference Proceedings - Reprints of Symposia - Division of Fuel Chemistry., 52, 563-564. Washington Dc:American Chemical Society. PNNL-SA-55182.

2006

  • Brooks K.P., S.D. Rassat, J. Hu, V.S. Stenkamp, S.N. Schlahta, J.R. Bontha, and J.D. Holladay, et al. 2006. "Development of a Microchannel In Situ Propellant Production System." In Space Technology and Applications International Forum--STAIF 2006, edited by MS El-Genk, 813, 111-1121. Melville, New York:American Institute of Physics. PNWD-SA-7376.
  • Rassat S.D., R.S. Smith, C.L. Aardahl, T. Autrey, A.A. Chin, J.W. Magee, and G.R. VanSciver, et al. 2006. "Thermal Stability and Hydrogen Release Kinetics of Ammonia Borane Under Vehicle Storage Conditions." In The 232nd American Chemical Society National Meeting, Division of Fuel Chemistry, September 10-14, 2006, San Francisco, California, 51, 517-519. Washington Dc:American Chemical Society. PNNL-SA-50037.

2005

  • Brooks K.P., S.D. Rassat, and W.E. TeGrotenhuis. 2005. Development of a Microchannel In Situ Propellant Production System. PNNL-15456. Richland, WA: Pacific Northwest National Laboratory.

2003

  • Rassat S.D., L.A. Mahoney, B.E. Wells, D.P. Mendoza, and D.D. Caldwell. 2003. Assessment of Physical Properties of Transuranic Waste in Hanford Single-Shell Tanks. PNNL-14221. Richland, WA: Pacific Northwest National Laboratory.
  • Rassat S.D., L.A. Mahoney, R.L. Russell, S.A. Bryan, and R.L. Sell. 2003. Cold Dissolved Saltcake Waste Simulant Development, Preparation, and Analysis. PNNL-14194 Rev. 1. Richland, WA: Pacific Northwest National Laboratory.
  • Rassat S.D., L.A. Mahoney, R.L. Russell, S.A. Bryan, and R.L. Sell. 2003. Cold Dissolved Saltcake Waste Simulant Development, Preparation, and Analysis. PNNL-14194. Richland, WA: Pacific Northwest National Laboratory.
  • Rassat S.D., L.M. Bagaasen, L.A. Mahoney, R.L. Russell, D.D. Caldwell, and D.P. Mendoza. 2003. Physical and Liquid Chemical Simulant Formulations for Transuranic Waste in Hanford Single-Shell Tanks. PNNL-14333. Richland, WA: Pacific Northwest National Laboratory.

2001

  • Lilga M.A., R.J. Orth, J.H. Sukamto, S.D. Rassat, J.D. Genders, and R. Gopal. 2001. "Cesium Separation Using Electrically Switched Ion Exchange." Separation Science and Technology 24, no. 3:451-466. PNNL-SA-32869.

2000

  • Rassat S.D., C.W. Stewart, B.E. Wells, W.L. Kuhn, Z.I. Antoniak, J.M. Cuta, and K.P. Recknagle, et al. 2000. Dynamics of Crust Dissolution and Gas Release in Tank 241-SY-101. PNNL-13112. Richland, WA: Pacific Northwest National Laboratory.

1999

  • Rassat S.D., J.H. Sukamto, R.J. Orth, M.A. Lilga, and R.T. Hallen. 1999. "Development of Electrically Switched Ion Exchange Process for Selective Ion Separations." Separation and Purification Technology 15, no. 3:207-222. PNNL-SA-29955.
  • Rassat S.D., P.A. Gauglitz, S.M. Caley, L.A. Mahoney, and D.P. Mendoza. 1999. A Discussion of SY-101 Crust Gas Retention and Release Mechanisms. PNNL-12092. Richland, WA: Pacific Northwest National Laboratory.
  • Stewart C.W., S.D. Rassat, J.H. Sukamto, and J.M. Cuta. 1999. Buoyancy and Dissolution of the Floating Crust Layer in Tank 241-SY-101 During Transfer and Back-Dilution. PNNL-13040. Richland, WA: Pacific Northwest National Laboratory.
  • Sukamto J.H., T.L. Hubler, M.A. Lilga, S.D. Rassat, G. Anderson, W.H. Smryl, and J. Mcbreen. 1999. Electroactive Materials for Anion Separation - Technetium from Nitrate. PNNL-12208. Richland, WA: Pacific Northwest National Laboratory.

Experimental and Computational Engineering

Additional Information