Hostname: page-component-54dcc4c588-9xpg2 Total loading time: 0 Render date: 2025-09-12T09:42:40.783Z Has data issue: false hasContentIssue false
  • English
  • Français

Aqueous Dissolution of Silver Iodide and Associated Iodine Release under Reducing Conditions with Sulfide<B>

Published online by Cambridge University Press:  19 October 2011

Yaohiro Inagaki ,
Toshitaka Imamura ,
Kazuya Idemitsu ,
Tatsumi Arima ,
Osamu Kato ,
Hidekazu Asano  and
Tsutomu Nishimura
Yaohiro Inagaki
Affiliation:
inagytne@mbox.nc.kyushu-u.ac.jp, Kyusyu University, Department of Aplied Quantum Physics & Nuclear Engineering, Moto-oka 744, W2-933, Fukuoka, 819-0395, Japan, +81-92-802-3493, +81-92-802-3501
Toshitaka Imamura
Affiliation:
imamura@nucl.kyushu-u.ac.jp, Kyushu University, Fukuoka, 819-0395, Japan
Kazuya Idemitsu
Affiliation:
idemitsu@nucl.kyushu-u.ac.jp, Kyushu University, Fukuoka, 819-0395, Japan
Tatsumi Arima
Affiliation:
arimatne@mbox.nc.kyushu-u.ac.jp, Kyushu University, Fukuoka, 819-0395, Japan
Osamu Kato
Affiliation:
o.kato@engnet.kobelco.co.jp, Kobe Steel Inc., Kobe, 657-0845, Japan
Hidekazu Asano
Affiliation:
h-asano@rwmc.or jp, RWMC, Tokyo, 105-0001, Japan
Tsutomu Nishimura
Affiliation:
t-nishimura@rwmc.or.jp, RWMC, Tokyo, 105-0001, Japan
Get access

Abstract

Aqueous dissolution tests of AgI were performed in Na2S solutions in order to evaluate, empirically, dissolution of AgI to release iodine under reducing conditions with sulfide. The results indicated that AgI dissolves to release iodine being controlled by mainly precipitation of Ag2S. However, the dissolution of AgI can be depressed to proceed, and the thermodynamic equilibrium cannot be attained easily. Solid phase analysis for the reacted AgI suggested that a thin layer of solid silver forming at AgI surface may evolve to be protective against transportation of reactant species, which can lead to the depression in the dissolution of AgI.

Keywords

waste managementIAg

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 985: Symposium NN – Scientific Basis for Nuclear Waste Management XXX , 2006 , 0985-NN12-12
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

1. Kato, H., Kato, O., Tanabe, H., Proc. of the International Symposium NUCEF 2001, JAERI-Conf 2002-004, pp.6970704, Japan Atomic Energy Research Institute (2002).Google Scholar
2. Couture, R. A. and Seitz, M. G., Nuclear and chemical waste management 4, 302(1983).Google Scholar
3. Andersson, K., Torstenfelt, B. and Allard, B., SKBF Technical 83–63, KBS Report (1983).Google Scholar
4. Tayler., P., A review of methods for immobilizing 129I arising from a nuclear fuel reprocessing plant, with emphasis on waste-form chemistry., Atomic Energy of Canada Limited report AECL-10163 (1990).Google Scholar
5. Latimer., W. M., "The oxidation states of elements and their potentials in aqueous solutions", Prentice Hall (1952).Google Scholar
6. Wagman., D.D. et al., Selected Values of Chemical Thermodynamic Properties., U.S. National Bureau of Standards, Technical Notes 270-5 (1971).Google Scholar
7. Xia, X., Inagaki, Y., et al., in Scientific Basis for Nuclear Waste Management XXV, edited by B.P.McGrail and G.A.Cragnolino, (Mater.Res. Soc.Symp. Proc.713) pp.783–790 (2002).Google Scholar
8. Ball, J.W., Nordstro, D.K., U.S.Geological Survey Open-File Report 91-183 (1991).Google Scholar