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Troy Garn


Research Areas:
Chemical Separations; Gas/Solid separations; Nuclear fuel cycle

Troy G. Garn has over 30 years of experience in both operations and research areas at Idaho National Laboratory pertaining to the Nuclear Fuel Cycle. In the operations sector he was actively engaged in the front end of the Nuclear Fuel Cycle, from shipping/receiving and handling nuclear fuel to eventual dissolution and product denitration to solid form. Ultimately, Mr. Garn transferred to the research sector working on the experimental development of solvent extraction flowsheets for selective actinide partitioning including design and operation of associated solvent extraction equipment. Over his tenure, Mr. Garn has acquired extensive research experience in gas-solid separations, liquid-liquid solvent extraction, ion exchange, solid-liquid separations, and glass vitrification/solidification of HLW solutions. Currently as a research scientist, Mr. Garn’s responsibilities include Principal Researcher of a program studying the capture of volatile radioactive fission products as well as Project Manager associated with Nuclear Fuel Cycle training programs for the Department of Homeland Security and the US military. Mr. Garn has 12 published journal articles and written numerous external reports, including one international publication, and authored numerous papers presented at various conference proceedings. Mr. Garn also is the inventor on three US patents and one other accepted patent application. Mr. Garn attended Idaho State University studying in the general engineering curriculum. Later, Mr. Garn completed the Process Technology curriculum at Eastern Idaho Technical College with a cumulative 4.0 G.P.A. earning a scholarship for high academic excellence. Most recently, Mr. Garn completed the University of Idaho graduate course, Chemistry 516 “Methods in Radiochemistry”. Mr. Garn has worked for 30 years at the INL. His current position of Research Scientist resides in the Aqueous Separations and Radiochemistry Group in the Nuclear Science and Technology Directorate.


​Bryan J. Riley, Ph.D. and Troy G. Garn, “Purification of Gaseous and Liquid Streams Using Composite Sorbents Embedded in a Polyacrylonitrile Matrix”, Book Chapter in Advances in Materials Science Research, Vol 35 2019.  Nova Science Publishers, Inc.


Troy G. Garn, Mitchell Greenhalgh and Jack D. Law, “Development and evaluation of a silver mordenite composite sorbent for the partitioning of xenon from krypton in gas compositions", Journal of Nuclear Science and Technology, VOL. 53, No. 10, pgs. 1484-1488, September 2016.


Bruce J. Mincher, Richard D. Tillotson, Troy G. Garn, Veronica Rutledge, Jack D. Law and Nicholas C. Schmitt, “The solvent extraction of Am (IV) using centrifugal contactors”,  Journal of Radioanalytical and Nuclear Chemistry, VOL 307, Issue 3, pp 1833-1836 March 2016.


M. Greenhalgh, T. G. Garn, and J. D. Law, “Development of a Hydrogen Mordenite Sorbent for the Capture of Krypton from Used Nuclear Fuel Reprocessing Offgas Streams”, Journal of Nuclear Science and Technology, Vol. 51 (4), 2014.


Jack law, Julia Tripp, John Svoboda, Veronica Rutledge, Troy Garn and Larry Macaluso, “Microfluidic – based robotic sampling system for radioactive solutions”, Nuclear Technologies, Vol 185, Part 2, Feb 2014.


Brian J. Riley, Jaehun Chun, David A. Pierce, Josef Matyas, William C. Lepry, Troy G. Garn, Jack D. Law, Kyriaki Polychronopoulou,and Mercouri G. Kanatzidis, “Polyacrylonitrile chalcogel hybrid sorbents for radioiodine capture”, Environmental Science and Technology  April 2014.


Nick Soelberg, Troy Garn, Jack Law, Mitchell Greenhalgh, Bob Jubin, Denis Strachan, Praveen Thallapally, “Radioactive Iodine and Krypton Control for Nuclear Fuel Reprocessing Activities”, Nuclear Fuel Reprocessing Technologies and Commercialization, Special Issue of Science and Technology of Nuclear Installations. VOL 2013, Article ID 702496.


Jack D. Law, David H. Meikrantz, Troy G. Garn, “Advanced Remote Maintenance Design for Pilot Scale Centrifugal Contactors”, Journal Nuclear Technology, VOL 173, Issue 2, pp 191-199  2011.


David H. Meikrantz; Jack. D. Law; Troy G. Garn; Lawrence L. Macaluso, A Centrifugal Contactor Design to Facilitate Remote Replacement, Journal Nuclear Technology, VOL 173 Issue 3, pp 289-299 2011.


Jack D. Law, Troy G. Garn, David H. Meikrantz, Jamie Warburton, “Pilot scale TRUEX Flowsheet Testing for Separation of Actinides and Lanthanides from Used Nuclear Fuel”, INL/JOU-09-17130, Separations Science and Technology Journal, vol 45 pp 1769-1775  part 12-13.


David H. Meikrantz, Troy G. Garn, Jack D. Law, " Thirty Stage Annular Centrifugal Contactor Thermal Profile Measurements",  Separation Science and Technology, 45, 310,  2010.


Julie Tripp, Troy Garn, Richard Boardman, Jack Law, “Development of Steam Reforming for the Solidification of the Cesium and Strontium Separations Product from Advanced Aqueous Reprocessing of Spent Nuclear Fuel”, Separation Science and Technology. Volume 41 Number 10 pgs 2147-2162, 2006.


T.A. Luther, R.S. Herbst, D.R. Peterman, T.G. Garn, R.D. Tillotson, “Some Aspects of Fundamental Chemistry of the Universal Extraction (UNEX) Process for the Simultaneous Separation of Major Radionuclides (Cesium, Strontium, Actinides, and Lanthanides) from Radioactive Wastes”. Journal of Radioanalytical and Nuclear Chemistry. Vol 267, No. 3 (2006) 603-613.


​GARN, T.G., LAW, J.D, GREENHALGH, M.R, TRANTER, T.J, 2014, "Composite media for fluid stream processing, a method of forming the composite media, and a related method of processing a fluid stream", Patent 8,686,083, April 1, 2014.

Meikrantz, David H, Law, Jack D, Garn, Troy G, Macaluso, Lawrence L, and Todd, Terry A., 2012, "Centrifugal separators and related devices and methods", Patent 8,128,548, March 6, 2012.

Meikrantz, David H, Law, Jack D, Garn, Troy G, Todd, Terry A, and Macaluso, Lawrence L., 2012, "Centrifugal separator devices, systems and related methods", Patent 8,137,255, March 20, 2012.


​2018 R&D 100 Special Recognition Silver Award in the Green Technology Category for the Phosphate Sponge Technology, Troy Garn, Mitchell Greenhalgh, Jack Law, and Steve Hammon, Orlando, FL Nov 2018

Outstanding Partnership Award, Federal Laboratory Consortium (FLC) Far West Region, Phosphate Sponge for Remediation of Algae Blooms Technology, Gary Smith, Troy G. Garn, Jack D. Law, Mitchell Greenhalgh and Steve Hammon. July 2018


2018 R&D 100 Nomination for the APR Phosphate Sponge, Troy Garn, Mitchell Greenhalgh, Jack Law, Steve Hammon, Mike Irish, March 2018


Early Stage Technology Innovation of the Year, Idaho Innovations Award 2017 Finalist, The APR Phosphate Sponge, Troy Garn, Mitchell Greenhalgh, Jack Law, Steve Hammon, Mike Irish, September 2017


Outstanding Technology Development Award, Federal Laboratory Consortium (FLC) Far West Region, Remediation of Toxic Algae Blooms, Troy Garn, Mitchell Greenhalgh, Jack Law, Steve Hammon, Mike Irish,  August 2017

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Created at 3/23/2018 2:41 PM by Phyllis L. King
Last modified at 12/4/2018 12:54 PM by Phyllis L. King