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Nuclear Chemistry & Engineering

Rick Shimskey

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352

PNNL Publications


  • Schonewill PP, RC Daniel, RW Shimskey, CA Burns, JM Billing, and RA Peterson. 2015. "Long-Time Performance of a Stainless Steel Crossflow Filter with Simulated Hanford Tank Waste." Chemical Engineering Research & Design 102:69-79.  doi:10.1016/j.cherd.2015.06.016


  • Schonewill PP, PA Gauglitz, RW Shimskey, KM Denslow, MR Powell, GK Boeringa, JR Bontha, NK Karri, LS Fifield, DN Tran, S Sande, DJ Heldebrant, JE Meacham, D Smet, WE Bryan, and RB Calmus. 2014. Evaluation of Gas Retention in Waste Simulants: Tall Column ExperimentsPNNL-23340; DSGREP-RPT-005, Rev.0, Pacific Northwest National Laboratory, Richland, WA. 



  • Edwards MK, PP Schonewill, RW Shimskey, CM Niver, and RA Peterson. 2012. "Process Results for the Integrated Near-Tank Treatment System Pilot Demonstration." Separation Science and Technology 47(14-15):2115-2120. 
  • Schonewill PP, MK Edwards, C Smith, R Tranbarger, RW Shimskey, and RA Peterson. 2012. "Near-Tank Treatment of Hanford Tank Waste: Pilot-Scale Testing." In WM 2012: Improving the Future in Waste Management, February 26 - March 1, 2012, Phoenix, Arizona, p. Paper No. 12107.  WM Symposia, Tucson, AZ. 
  • Schonewill PP, MK Edwards, RW Shimskey, and RA Peterson. 2012. "Generating an Estimate of the Capacity of the Near-Tank Treatment System for Processing S/SX Tank Waste." Separation Science and Technology 47(14-15):2121-2128. 
  • Schonewill PP, RC Daniel, RL Russell, RW Shimskey, CA Burns, JM Billing, BM Rapko, and RA Peterson. 2012. "Development of an S-Saltcake Simulant Using Crossflow Filtration as a Validation Technique." Separation Science and Technology 47(14-15):2098-2107. 


  • Billing JM, RC Daniel, RT Hallen, PP Schonewill, RW Shimskey, and RA Peterson. 2011. "Chemical cleaning of porous stainless steel cross-flow filter elements for nuclear waste applications." In American Filtration and Separations Society Annual Meeting, May 10-12, 2011, Lousiville, Kentucky.  American Filtration & Separations Society, Kingwood, TX. 
  • Daniel RC, JM Billing, CA Burns, RA Peterson, RL Russell, PP Schonewill, and RW Shimskey. 2011. Filtration Understanding: FY10 Testing Results and Filtration Model UpdatePNNL-20299, Pacific Northwest National Laboratory, Richland, WA. 
  • Daniel RC, JM Billing, RL Russell, RW Shimskey, HD Smith, and RA Peterson. 2011. "Integrated pore blockage-cake filtration model for crossflow filtration." Chemical Engineering Research & Design 89(7):1094-1103.  doi:10.1016/j.cherd.2010.09.006
  • Shimskey RW, PP Schonewill, RC Daniel, and RA Peterson. 2011. "Complex Microfiltration Behavior of Metal Hydroxide Slurries." In WM 2011: Global Achievements and Challenges in Waste Management, February 28 - March 3, 2011, Phoenix, Arizona, p. Paper No. 11376.  WM Symposia, Tucson, AZ. 
  • Smith C, R Schepens, DL Blanchard, Jr, RW Shimskey, and RA Peterson. 2011. "Pilot Scale Testing of Continuous Sludge Leaching Process and Near Tank Cesium Removal." In WM 2011: Global Achievements and Challenges in Waste Management, February 27 - March 3, 2011, Phoenix, Arizona, p. Paper No. 11377.  WM Symposia, Tucson, AZ. 


  • Edwards MK, RL Russell, RW Shimskey, and RA Peterson. 2010. "Bench-Scale Testing of the Continuous Sludge Leaching Process." Separation Science and Technology 45(12-13):1807-1813.  doi:10.1080/01496395.2010.493799
  • Daniel RC, PP Schonewill, RW Shimskey, and RA Peterson. 2010. A Brief Review of Filtration Studies for Waste Treatment at the Hanford SitePNNL-20023, Pacific Northwest National Laboratory, Richland, WA. 
  • Peterson RA, SK Fiskum, LA Snow, MK Edwards, and RW Shimskey. 2010. "Hanford Tank Waste - What is in it? Where is it going?" In Proceedings of the 36th Annual Radioactive Waste Management Symposium (WM 2010), March 7-11, 2010, Phoenix, AZ, vol. 5, pp. 3750-3761.  Waste Management Symposia, Inc., Tucson, AZ. 



  • Hanson BD, RC Daniel, A Casella, RS Wittman, W Wu, PJ MacFarlan, and RW Shimskey. 2008. Fuel-In-Air FY07 Summary ReportPNNL-17275 Rev.1, Pacific Northwest National Laboratory, Richland, WA. 


  • Shimskey RW, WC Buchmiller, and MR Elmore. 2007. Testing Report: Littleford-Day Dryer Operation: Dryer Operation Impacts of Proposed MIS Mitigation ChangesPNNL-16659, Pacific Northwest National Laboratory, Richland, WA. 
  • Peterson RB, B Paul, T Palmer, Q Wu, W Jost, CHT Tseng, S Tiwari, GK Patello, EC Buck, JD Holladay, RW Shimskey, PH Humble, PJ MacFarlan, and J Wainright. 2007. "Microscale Power Generation based on Radiolytic Processes." In The Sixth International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2006), November 29-December 1, 2006, Berkeley, California, pp. 235-238.  IOPScience, Bristol, United Kingdom. 
  • Peterson RB, B Paul, T Palmer, Q Wu, W Jost, CHT Tseng, S Tiwari, GK Patello, EC Buck, JD Holladay, RW Shimskey, PH Humble, PJ MacFarlan, and J Wainright. 2007. "Radiolytic microscale power generation based on single chamber fuel cell operation." Journal of Micromechanics and microengineering: structures, devices & systems 17:S250-S256.  doi:10.1088/0960-1317/17/9/S07


  • Scott PA, JS Fruchter, JE Szecsody, AJ Schmidt, GB Mellinger, RD Scheele, RW Shimskey, SA Jones, WK Hensley, EA Lepel, M Oostrom, SW Petersen, TD Cooper, MJ Minette, JR Ewalt, and RE Wilkinson. 2006. "Overview of Technologies and Innovations Being Developed for Fluor Hanford Projects at the Hanford Site." In 2006 Waste Management Symposium: Global Accomplishments in Environmental and Radioactive Waste Management:Education and Opportunity for the Next Generation of Waste Management Professionals.  Arizona Board of Regents, Tucson, AZ. 


  • Thrall KD, and AD Woodstock. 2003. "Evaluation of the Dermal Bioavailability of Aqueous Xylene in F344 Rats and Human Volunteers ." Journal of Toxicology and Environmental Health Part A 66(13):1267-1281. 
  • Thrall KD, RE Schwartz, KK Weitz, JJ Soelberg, GL Foureman, JD Prah, and C Timchalk. 2003. "A Real-time Method to Evaluate the Nasal Deposition and Clearance of Acetone in the Human Volunteer." Inhalation Toxicology 15(6):523-538. 


  • Soldat KL, and KD Thrall. 2001. "Design and Evaluation of a Breath Analysis System for Occupational Exposure Assessment." In Environmental Health Risk. First International Conference on the Impact of Environmental Factors on Health 10 - 12 September 2001, Cardiff, Wales, UK , pp. 83-94.  Wit Press, Southhampton, United Kingdom. 
  • Timchalk C, TS Poet, Y Lin, KK Weitz, R Zhao, and KD Thrall. 2001. "Development of an Integrated Micro-Analytical System for Lead in Saliva and Linkage to a Physiologically Based Pharmacokinetic Model Describing Lead Saliva Secretion ." American Industrial Hygiene Association Journal 62(3):295-302. 
  • Benson JM, BM Tibbetts, KD Thrall, and DL Springer. 2001. "Uptake, Tissue Distribution, and Fate of Inhaled Carbon Tetrachloride: Comparison of Rat, Mouse, and Hamster." Inhalation Toxicology 13:207-217. 
  • Lin Y, C Timchalk, DW Matson, H Wu, and KD Thrall. 2001. "Integrated Microfluidics/Electrochemical Sensor System for Monitoring of Environmental Exposures to Lead and Chlorophenols." Biomedical Microdevices 3(4):331-338. 
  • Thrall KD, PJ Callahan, KK Weitz, JA Edwards, MC Brinkman, and DV Kenny. 2001. "Design and evaluation of a breath-analysis system for biological monitoring of volatile compounds." American Industrial Hygiene Association Journal 62(1):28-35. 


  • Poet TS, KD Thrall, RA Corley, XY Hui, JA Edwards, KK Weitz, HI Maibach, and RC Wester. 2000. "Utility of real time breath analysis and physiologically based pharmacokinetic modeling to determine the percutaneous absorption of methyl chloroform in rats and humans ." Toxicological Sciences 54(1):42-51. 
  • Poet TS, RA Corley, KD Thrall, JA Edwards, H Tanojo, KK Weitz, X Hui, HI Maibach, and RC Wester. 2000. "Assessment of the Percutaneous Absorption of Trichloroethylene in Rats and Humans Using MS/MS Real Time Breath Analysis and Physiologically Based Pharmacokinetic Modeling." Toxicological Sciences 56(1):61-72. 
  • Thrall KD, TS Poet, RA Corley, H Tanojo, JA Edwards, KK Weitz, X Hui, HI Maibach, and RC Wester. 2000. "A Real-Time In-vivo Method for Studying the Percutaneous Absorption of Volatile Chemicals." International Journal of Occupational Environmental Health 6(2):96-103. 
  • Thrall KD, ME Vucelick, RA Gies, RC Zangar, KK Weitz, TS Poet, DL Springer, DM Grant, and JM Benson. 2000. "Comparative Metabolism of Carbon Tetrachloride in Rats, Mice and Hamsters Using Gas Uptake and PBPK Modeling." Journal of Toxicology and Environmental Health 60(8):531-548. 


  • Lin Y, R Zhao, KD Thrall, C Timchalk, WD Bennett, and DW Matson. 1999. "Integration of Microfluidics/Electrochemical System for Trace Metal Analysis by Stripping Voltammetry." In Proceedings of SPIE. Microfludic Devices and Systems II: September 20-21, 1999, Santa Clara, California, vol. 3877, ed. C.H. Ahn and A.B. Frazier, pp. 248-256.  SPIE , Bellingham, WA. 

Nuclear Chemistry & Engineering

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Karl Pool
Analytical Support Operations Lead

Don Bachand
RPL R&D Operations Manager