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Title: Adsorption of iodine on hydrogen-reduced silver-exchanged mordenite: Experiments and modeling

Abstract

The adsorption process of iodine, a major volatile radionuclide in the off-gas streams of spent nuclear fuel reprocessing, on hydrogen-reduced silver-exchanged mordenite (Ag0Z) was studied at the micro-scale. The gas-solid mass transfer and reaction involved in the adsorption process were investigated and evaluated with appropriate models. Optimal conditions for reducing the silver-exchanged mordenite (AgZ) in a hydrogen stream were determined. Kinetic and equilibrium data of iodine adsorption on Ag0Z were obtained by performing single-layer adsorption experiments with experimental systems of high precision at 373–473 K over various iodine concentrations. Results indicate approximately 91% to 97% of the iodine adsorption was through the silver-iodine reaction. The effect of temperature on the iodine loading capacity of Ag0Z was discussed. In conclusion, the Shrinking Core model describes the data well, and the primary rate controlling mechanisms were macro-pore diffusion and silver-iodine reaction. © 2016 American Institute of Chemical Engineers AIChE J, 2016

Authors:
 [1];  [1];  [2]
  1. Syracuse Univ., Syracuse, NY (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
Work for Others (WFO); USDOE
OSTI Identifier:
1324201
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
AIChE Journal
Additional Journal Information:
Journal Name: AIChE Journal; Journal ID: ISSN 0001-1541
Publisher:
American Institute of Chemical Engineers
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY

Citation Formats

Nan, Yue, Tavlarides, Lawrence L., and DePaoli, David W. Adsorption of iodine on hydrogen-reduced silver-exchanged mordenite: Experiments and modeling. United States: N. p., 2016. Web. doi:10.1002/aic.15432.
Nan, Yue, Tavlarides, Lawrence L., & DePaoli, David W. Adsorption of iodine on hydrogen-reduced silver-exchanged mordenite: Experiments and modeling. United States. https://doi.org/10.1002/aic.15432
Nan, Yue, Tavlarides, Lawrence L., and DePaoli, David W. Wed . "Adsorption of iodine on hydrogen-reduced silver-exchanged mordenite: Experiments and modeling". United States. https://doi.org/10.1002/aic.15432. https://www.osti.gov/servlets/purl/1324201.
@article{osti_1324201,
title = {Adsorption of iodine on hydrogen-reduced silver-exchanged mordenite: Experiments and modeling},
author = {Nan, Yue and Tavlarides, Lawrence L. and DePaoli, David W.},
abstractNote = {The adsorption process of iodine, a major volatile radionuclide in the off-gas streams of spent nuclear fuel reprocessing, on hydrogen-reduced silver-exchanged mordenite (Ag0Z) was studied at the micro-scale. The gas-solid mass transfer and reaction involved in the adsorption process were investigated and evaluated with appropriate models. Optimal conditions for reducing the silver-exchanged mordenite (AgZ) in a hydrogen stream were determined. Kinetic and equilibrium data of iodine adsorption on Ag0Z were obtained by performing single-layer adsorption experiments with experimental systems of high precision at 373–473 K over various iodine concentrations. Results indicate approximately 91% to 97% of the iodine adsorption was through the silver-iodine reaction. The effect of temperature on the iodine loading capacity of Ag0Z was discussed. In conclusion, the Shrinking Core model describes the data well, and the primary rate controlling mechanisms were macro-pore diffusion and silver-iodine reaction. © 2016 American Institute of Chemical Engineers AIChE J, 2016},
doi = {10.1002/aic.15432},
journal = {AIChE Journal},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 03 00:00:00 EDT 2016},
month = {Wed Aug 03 00:00:00 EDT 2016}
}

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Works referenced in this record:

Stability and Chemical Form of Iodine Sorbed on Silver-Exchanged Zeolite X
journal, November 1984

  • Matsuoka, Shingo; Nakamura, Hirone; Tamura, Takaaki
  • Journal of Nuclear Science and Technology, Vol. 21, Issue 11
  • DOI: 10.1080/18811248.1984.9731125

FTIR studies of butane, toluene and nitric oxide adsorption on Ag exchanged NaMordenite
journal, October 2011


AgNaMordenite catalysts for hydrocarbon adsorption and deNOx processes
journal, November 2011

  • Aspromonte, Soledad G.; Serra, Ramiro M.; Miró, Eduardo E.
  • Applied Catalysis A: General, Vol. 407, Issue 1-2
  • DOI: 10.1016/j.apcata.2011.08.033

Determining Quantitative Kinetics and the Structural Mechanism for Particle Growth in Porous Templates
journal, October 2011

  • Zhao, Haiyan; Nenoff, Tina M.; Jennings, Guy
  • The Journal of Physical Chemistry Letters, Vol. 2, Issue 21
  • DOI: 10.1021/jz201260n

Heat Capacity of Silver Iodide. I. Experiments on Annealed Samples
journal, March 1968

  • Perrott, C. M.; Fletcher, N. H.
  • The Journal of Chemical Physics, Vol. 48, Issue 5
  • DOI: 10.1063/1.1669404

Novel Long-Term Immobilization Method for Radioactive Iodine-129 Using a Zeolite/Apatite Composite Sintered Body
journal, June 2009

  • Watanabe, Yujiro; Ikoma, Toshiyuki; Yamada, Hirohisa
  • ACS Applied Materials & Interfaces, Vol. 1, Issue 7
  • DOI: 10.1021/am900251m

Heat Capacity of Silver Iodide. II. Theory
journal, March 1968

  • Perrott, C. M.; Fletcher, N. H.
  • The Journal of Chemical Physics, Vol. 48, Issue 6
  • DOI: 10.1063/1.1669502

Natural zeolitic material of the clinoptilolite type and its AgI form
journal, June 1995

  • Reháková, M.; Sopková, A.; Šepelák, V.
  • Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, Vol. 23, Issue 2
  • DOI: 10.1007/BF00707893

Isotherms for Water Adsorption on Molecular Sieve 3A: Influence of Cation Composition
journal, July 2015

  • Lin, Ronghong; Ladshaw, Austin; Nan, Yue
  • Industrial & Engineering Chemistry Research, Vol. 54, Issue 42
  • DOI: 10.1021/acs.iecr.5b01411

Physical chemistry of iodine and removal of iodine from gas streams
journal, December 1963

  • Chamberlain, A. C.; Eggleton, A. E. J.; Megaw, W. J.
  • Journal of Nuclear Energy. Parts A/B. Reactor Science and Technology, Vol. 17, Issue 11-12
  • DOI: 10.1016/0368-3230(63)90066-1

Radioactive Iodine and Krypton Control for Nuclear Fuel Reprocessing Facilities
journal, January 2013

  • Soelberg, Nick R.; Garn, Troy G.; Greenhalgh, Mitchell R.
  • Science and Technology of Nuclear Installations, Vol. 2013
  • DOI: 10.1155/2013/702496

Iodine adsorption and structure of activated carbons
journal, January 1975


Iodine adsorption on silver-exchanged titania-derived adsorbents
journal, June 2014

  • Wu, Lan; Sawada, James A.; Kuznicki, Daniel B.
  • Journal of Radioanalytical and Nuclear Chemistry, Vol. 302, Issue 1
  • DOI: 10.1007/s10967-014-3252-5

Iodine-129 in the environment of a nuclear fuel reprocessing plant: I. 127I and 127I contents of soils, food crops and animal products
journal, January 1988


Applicability of a Model Predicting Iodine-129 Profile in a Silver Nitrate Silica-Gel Column for Dissolver Off-Gas Treatment of Fuel Reprocessing
journal, January 2003

  • Mineo, Hideaki; Gotoh, Minoru; Iizuka, Masaru
  • Separation Science and Technology, Vol. 38, Issue 9
  • DOI: 10.1081/SS-120020130

Kinetics of Water Vapor Adsorption on Single-Layer Molecular Sieve 3A: Experiments and Modeling
journal, September 2014

  • Lin, Ronghong; Liu, Jiuxu; Nan, Yue
  • Industrial & Engineering Chemistry Research, Vol. 53, Issue 41
  • DOI: 10.1021/ie5024645

Comparison of kinetic and diffusional models for solid-gas reactions
journal, March 1968


Effect of Pore Blockage on Adsorption Isotherms and Dynamics: Anomalous Adsorption of Iodine on Activated Carbon
journal, April 2000

  • Bhatia, S. K.; Liu, F.; Arvind, G.
  • Langmuir, Vol. 16, Issue 8
  • DOI: 10.1021/la991418h

Study on adsorption performance of coal based activated carbon to radioactive iodine and stable iodine
journal, October 2014


Radioactive Iodine Capture in Silver-Containing Mordenites through Nanoscale Silver Iodide Formation
journal, July 2010

  • Chapman, Karena W.; Chupas, Peter J.; Nenoff, Tina M.
  • Journal of the American Chemical Society, Vol. 132, Issue 26
  • DOI: 10.1021/ja103110y

Study of the Nature and Location of Silver in Ag-Exchanged Mordenite Catalysts. Characterization by Spectroscopic Techniques
journal, November 2013

  • Aspromonte, Soledad G.; Mizrahi, Martín D.; Schneeberger, Florencia A.
  • The Journal of Physical Chemistry C, Vol. 117, Issue 48
  • DOI: 10.1021/jp4046269

Works referencing / citing this record:

Multicomponent adsorption isotherm modeling using thermodynamically inconsistent and consistent models
journal, July 2019

  • Jadhav, Ananda J.; Srivastava, Vimal C.
  • AIChE Journal, Vol. 65, Issue 11
  • DOI: 10.1002/aic.16727