Recent Publications and Presentations

Publications

Adsorption and Off-Gas Treatment

Stanford JP, van Rooyen N, Vaidya T, Raja KS, Sabharwall P, Utgikar V. 2020. Photodecomposition of methyl iodide as pretreatment for adsorption of radioiodine species in used nuclear fuel recycling operations. Chemical Engineering Journal, 400: #125730. https://doi.org/10.1016/j.cej.2020.125730.

Nandanwar SU, Coldsnow K, Porter A, Sabharwall P, Aston DE, McIlroy DN, Utgikar V. 2017. Adsorption of radioactive iodine and krypton from off-gas stream using continuous flow adsorption column. Chemical Engineering Journal, 320: 222-231. DOI: 10.1016/j.cej.2017.03.020.


Nandanwar S, Coldsnow K, Utgikar V, Sabharwall P, Aston DE. 2016. Capture of harmful radioactive contaminants from off-gas stream using porous solid sorbents for clean environment – A review. Chemical Engineering Journal, 306: 369-381, DOI 10.1016/j.cej.2016.07.073.


Nandanwar SU, Coldsnow K, Utgikar V, Sabharwall P, Aston DE, Zhang Y. 2016. Synthesis and characterization of ETS-10 - supported hollow carbon nano-polyhedrons nanosorbent for adsorption of krypton at near ambient temperatures. Adsorption, 22: 129-137, DOI 10.1007/s10450-015-9702-8.


Nandanwar S, Coldsnow K, Green M, Utgikar V, Sabharwall P, Aston DE. 2016. Activity of nanostructured C@ETS-10 sorbent for capture of volatile radioactive iodine from gas stream. Chemical Engineering Journal, 287: 593-601, DOI 10.1016/j.cej.2015.11.091.


Nandanwar SU, Dantas J, Green M, Coldsnow K, Utgikar V, Sabharwall P, Aston DE. 2016. Porous microsphere magnesium oxide as an active sorbent for capture of volatile iodine. Adsorption, 22: 335-345, DOI 10.1007/s10450-016-9781-1.


Integrated Energy Systems and Chemical Heat Pumps


Gupta A, Armatis PD, Sabharwall P, Fronk BM, Utgikar V. 2021. Kinetics of Ca(OH)2 decomposition in pure Ca(OH)2 and Ca(OH)2-CaTiO3 composite pellets for application in thermochemical energy storage system. Chemical Engineering Science, 246: #116986. https://doi.org/10.1016/j.ces.2021.116986.


Gupta A, Armatis PD, Sabharwall P, Fronk BM, Utgikar V. 2021. Energy and exergy analysis of Ca(OH)2/CaO dehydration-hydration chemical heat pump system: Effect of reaction temperature. Journal of Energy Storage, 39: #102633. https://doi.org/10.1016/j.est.2020.102633.


Armatis, PD, Gupta A, Sabharwall P, Utgikar V, Fronk BM. 2021. A Chemical-Absorption Heat Pump for Utilization of Nuclear Power in High Temperature Industrial Processes. International Journal of Energy Research, https://doi.org/10.1002/er.6721.

Gupta A, Armatis PD, Sabharwall P, Fronk BM, Utgikar V. 2021. Thermodynamics of Ca(OH)2/CaO reversible reaction: Refinement of reaction equilibrium and implications for operation of chemical heat pump. Chemical Engineering Science, 230: #116227. https://doi.org/10.1016/j.ces.2020.116227.



Phase Equilibria and Separations

Nichols TT, Utgikar V. 2018. Wagner equation predicting entire curve for pure fluids from limited VLE data: Critical and Normal Boiling Points & Acentric Factor. International Journal of Thermodynamics, 21: 158-172. DOI 10.5541/ijot.426202.


Nichols TT, Utgikar VP. 2018. Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Error Dependency Upon Data Interval & Fully-Determined Case. International Journal of Thermodynamics, 21: 38-53, DOI: 10.5541/ijot.372148.


Nichols TT, Utgikar VP. 2018. Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical Point and Four Antoine Analytic Points. Fluid Phase Equilibria, 460: 1–16, DOI: 10.1016/j.fluid.2017.12.022.


Lyon KL, Utgikar VP, Greenhalgh MR. 2017. Dynamic modeling for the separation of rate earth elements using solvent extraction: predicting separation performance using laboratory data. Industrial & Engineering Chemistry Research, 56: 1048-1056. DOI: 10.1021/acs.iecr.6b04009.


Used Nuclear Fuel Treatment

Day B, Zillinger J, Utgikar V, Raja KS. 2021. The Electrochemical Behavior of Tellurium Tetrachloride in LiCl-KCl Eutectic Molten Salt at 450 ºC. Journal of The Electrochemical Society, 168: #056514. https://doi.org/10.1149/1945-7111/abfeff.

Karlsson TY, Fredrickson GL, Yoo TS, Vaden D, Patterson MN, Utgikar V. 2019. Thermal analysis of projected molten salt compositions during FFTF and EBR-II used nuclear fuel processing. Journal of Nuclear Materials, 520: 87-95. DOI 10.1016/j.jnucmat.2019.04.016.

Shrestha N, Raja KS, Utgikar V. 2019. Mg-RE alloy anode materials for Mg-air battery application. Journal of the Electrochemical Society, 166: A3139-3153, DOI 10.1149/2.0131914jes.

Shrestha N, Day B, Utgikar V, Raja KS, Fredrickson G, Frank S. 2018. Electrochemistry of Iodide in LiCl-KCl Molten Salts and Chemla Effect: An Overview. ECS Transactions, 85(4): 15-23, DOI 10.1149/08504.0015ecst.


Shrestha N, Zillinger JM, Utgikar V, Raja KS. 2018. Design Strategies for Anode of Mg-Air Batteries and Hydrogen Evolution Reactions on Mg-RE Alloys. ECS Transactions, 85(13) 95-107. DOI 10.1149/08513.0095ecst.


Shrestha N, Utgikar V, Raja KS. 2018. The Effect of Grain Size on the Corrosion Behavior of Mg-RE Alloy ZE10A. ECS Transactions, 85(13): 671-682. DOI 0.1149/08513.0671ecst.


Day BC, Kersten B, Zillinger J, Raja KS, Utgikar V. 2018. Effect of Lattice Structure of Bismuth Sesquioxide on Electrochemical Energy Storage Characteristics. ECS Transactions, 85(13): 1539-1555. DOI 10.1149/08513.1539ecst.


Modeling, Simulation, Control and Experimental Investigations of Advanced Reactor-Heat Exchanger Systems

Chen M, Sun X, Christensen RN, Skavdahl I, Utgikar V, Sabharwall P. 2018. Dynamic Behavior of a High-Temperature Printed Circuit Heat Exchanger: Numerical Modeling and Experimental Investigation. Applied Thermal Engineering, 135: 246-256, DOI: 10.1016/j.applthermaleng.2018.02.051.


Skavdahl I, Utgikar V, Sabharwall P, Chen M, Sun X, Christensen R. 2016. Modeling and Simulation of Control System Response to Temperature Disturbances in a Coupled Heat Exchangers-AHTR System. Nuclear Engineering and Design, 300: 161-172, DOI 10.1016/j.nucengdes.1016.01.010.


Skavdahl I, Utgikar V, Christensen R, Chen M, Sun X, Sabharwall P. 2016. Control of Advanced Reactor-Coupled Heat Exchangers System: Incorporation of Reactor Dynamics in System Response to Load Disturbances. Nuclear Engineering and Technology, 48: 1349-1359, DOI: 10.1016/j.net.2016.05.001.


Chen M, Sun X, Christensen R, Shi S, Skavdahl I, Utgikar V, Sabharwall P. 2016. Experimental and Numerical Study of a Printed Circuit Heat Exchanger. Annals of Nuclear Energy, 97: 221-231, DOI 10.1016/j.anucene.2016.07.010.


Chen M, Sun X, Christensen R, Skavdahl I, Utgikar V, Sabharwall P. 2016. Pressure Drop and Heat Transfer Characteristics of a High-temperature Printed Circuit Heat Exchanger. Applied Thermal Engineering, 108: 1409-1417, DOI 10.1016/j.applthermaleng.2016.07.149.

Chen M, Kim I, Sun X, Christensen RN, Utgikar V, Sabharwall P. 2015. Transient analysis of an FHR coupled to a helium Brayton cycle. Progress in Nuclear Energy, 83: 283-293.

Bartel N, Chen M, Utgikar VP, Sun X, Kim I-H, Christensen R, Sabharwall P. 2015. Comparison of compact heat exchangers for application as the intermediate heat exchanger for advanced nuclear reactors. Annals of Nuclear Energy, 81: 143-149.

 

Teaching/Pedagogy

Utgikar VP, MacPherson D. 2016. Facilitating Conceptual Understanding of Gas Liquid Mass Transfer Coefficient through a Simple Experiment Involving Dissolution of Carbon Dioxide in Water in a Surface Aeration Reactor. Journal of Chemical Education, 93(7): 1282-1288, DOI: 10.1021/acs.jchemed.5b00882.


Utgikar V. 2015. Facilitating active learning of the concepts in transport phenomena: Experiment with a subliming solid. Chemical Engineering Education, 49(4): 215-220.


Presentations


 "Decomposition of organoiodides using electric discharge as a pretreatment process for adsorption," C Balumuru, J Stanford, V Utgikar, K Raja, P Sabharwall, 2021 ANS Virtual Annual Meeting, June 2021.

“Enhancement of Ca(OH)2/CaO Thermal Performance and Structural Integrity Using Inert Agent for Thermochemical Energy Storage,” A Gupta, V Utgikar, PD Armatis, BM Fronk, P  Sabharwall, 2021 ANS Virtual Annual Meeting, June 2021.

“Performance Comparison of Solid Reactant Based on Pellets and Powder for Ca(OH)2/CaO Chemical Heat Pump,” A Gupta, V Utgikar, PD Armatis, BM Fronk, P Sabharwall, 2020 Winter ANS Meeting, November 16-19, 2020.

“Hydrodynamics of Extraction Devices: Residence Time Distribution in Centrifugal Extractors for Organic Phase,” C Balumuru, V Utgikar, K Lyon, 2020 Winter ANS Meeting, November 16-19, 2020.

“Dynamic Adsorption of Organoiodides using Mordenites,” V Utgikar, T Vaidya, J Stanford, C Balumuru, K Raja, P Sabharwall, 2020 Winter ANS Meeting, November 16-19, 2020.

“Photodecomposition of Organoiodides to Molecular Iodine as Pretreatment for Adsorption in Used Nuclear Fuel Recycling Operations,” JP Stanford, T Vaidya, N van Rooyen, K Raja, P Sabharwall, VP Utgikar, AIChE 2020 Annual Meeting, November 16-20, 2020.

“System Efficiency and Dynamic Study of Ca(OH)2/CaO Chemical Heat Pump,” A Gupta, PD Armatis, P Sabharwall, V Utgikar, BM Fronk, 2020 ANS (American Nuclear Society) Annual Meeting, June 8-11, 2020.

“Photodecomposition of Organoiodides to Molecular Iodine as Pretreatment for Adsorption,” J Stanford, N van Rooyen, T Vaidya, K Raja, P Sabharwall, V Utgikar, 2020 ANS Annual Meeting, June 8-11, 2020.

“Transient Effects and Material Challenges in Developing Chemical/Absorption Heat Pumps for Nuclear Energy Thermal Storage and Upgrade,” PD Armatis, A Gupta, P Sabharwall, V Utgikar, BM Fronk, 2019 Winter ANS Meeting, November 17-21, 2019, Washington, DC.

“Performance of an Experimental Ca(OH)2/CaO Chemical Heat Pump Under Repeated Thermal Cycling,” A Gupta, PD Armatis, P Sabharwall, V Utgikar, BM Fronk, 2019 Winter ANS Meeting, November 17-21, 2019, Washington, DC.

“Electrochemical Behavior of Tellurium Species in LiCl-KCl Molten Salts,” B Day, N Shrestha, V Utgikar, KS Raja, G Fredrickson, S Frank, 2019 Winter ANS Meeting, November 17-21, 2019, Washington, DC.

“Redox Behavior of Iodide Species in LiCl-KCl at 450 – 550 °C,” N Shrestha, B Day, V Utgikar, KS Raja, G Fredrickson, S Frank, 2019 Winter ANS Meeting, November 17-21, 2019, Washington, DC.

“Chemical Heat Pumps,” Vivek P. Utgikar, Brian M. Fronk, Piyush Sabharwall, MIT-INL Workshop on Heat Storage for Gen IV Reactors for Variable Electricity from Base-Load Reactors, Idaho Falls, ID, July 23-24, 2019.

“Potential of Chemical-Absorption Heat Pumps for Thermoamplification in Nuclear Hybrid Energy Systems,” PD Armatis, A Gupta, P Sabharwall, V Utgikar, BM Fronk, 2019 ANS Annual Meeting, June 9-13, 2019, Minneapolis, MN.

“Experimental Investigation and Analysis of Ca(OH)2/CaO Chemical Heat Pump for Thermal Energy Storage, A Gupta, PD Armatis, P Sabharwall, V Utgikar, BM Fronk, 2019 ANS Annual Meeting, June 9-13, 2019, Minneapolis, MN.

“Dynamic Sorption Studies of Organoiodine Species on Silver-Mordenite,” T Vaidya, V Utgikar, KS Raja, P Sabharwall, 2019 ANS Annual Meeting, June 9-13, 2019, Minneapolis, MN.

“Hydrodynamics of Extraction Devices: Residence Time Distribution in Centrifugal Extractors,” J Perko, V Utgikar, K Lyon, 2019 ANS Annual Meeting, June 9-13, 2019, Minneapolis, MN.

“A Mass Transfer Model for the Adsorption of Iodine and Krypton on Engelhard Titanosilicate-10 Supported Carbon Nano-Polyhedrons,” K Coldsnow, S Nandanwar, V Utgikar, P Saharwall, 2017 ANS Winter Meeting, October 29-November 2, 2017, Washington, DC, USA.

“Effect of Moisture on the Adsorption of Iodine and Krypton in Multicomponent Streams on the 10 wt% C/ETS-10 Sorbent,” K Coldsnow, S Nandanwar, A Porter, V Utgikar, P Sabharwall, DE Aston, 2017 ANS Annual Meeting, June 11-15, 2017, San Francisco, CA, USA.


“Experimental and Numerical Study of Heat Transfer and Pressure Drop in a High-Temperature Printed Circuit Heat Exchanger,” M Chen, S Shi, X Sun, RN Christensen, I Skavdahl, V Utgikar, P Sabharwall, 8th International Topical Meeting on High Temperature Reactor Technology 2016 (HTR2016), November 6-10, 2016, Las Vegas, NV.

 

“Development of a Thermal-Hydraulic Analysis Code for an FHR,” M Chen, X Sun, RN Christensen, S Shi, I Skavdahl, V Utgikar, P Sabharwall, 11th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Operation and Safety (NUTHOS-11), October 9-13, 2016, Gyeongju, South Korea.

 

“Helium Brayton Cycle Design for Advanced High Temperature Reactor System,” I Skavdahl, V Utgikar, R Christensen, P Sabharwall, M Chen, X Sun, 2016 ANS Winter Meeting, November 6-10, 2016, Las Vegas, NV.

 

“Multicomponent Adsorption of Radioactive Iodine and Krypton using ETS-10 Supported Carbon Nano-Polyhedrons,” K Coldsnow, SU Nandanwar, A Porter, V Utgikar, P Sabharwall, DE Aston, 2016 ANS Winter Meeting, November 6-10, 2016, Las Vegas, NV.

 

“Porous C@ETS-10 Sorbent for Capture of Krypton from Off-Gas Stream in Nuclear Power Plants,” SU Nandanwar, K Coldsnow, VP Utgikar, P Sabharwall, DE Aston, 2016 International Congress on Advances in Nuclear Power Plants ICAPP 2016, April 2016, San Francisco, CA.

 

“Capacity of ETS-10 Supported Carbon Nanosorbent for Removal of Multicomponent from Off-Gas Stream,” KM Coldsnow, SU Nandanwar, A Porter, VP Utgikar, P Sabharwall, DE Aston, 2016 Annual meeting of the American Nuclear Society (ANS), June 2016, New Orleans, Louisiana.

 

“Simulation of Advanced High Temperature Reactor Control System using MATLAB,” I Skavdahl, V Utgikar, P Sabharwall, M Chen, X Sun, R Christensen, 2015 Winter meeting of the American Nuclear Society (ANS), November 2015, Washington, DC.

 

“Adsorption of Volatile Iodine from Off-Gas Stream using ETS-10 Supported Hollow Carbon Nanosorbent,” SU Nandanwar, K Coldsnow, M Green, V Utgikar, P Sabharwall, DE Aston, 2015 Winter meeting of the ANS, November 2015, Washington, DC.