The function of Sn(II)-apatite as a Tc immobilizing agent

被引：18

作者：

Asmussen, R. Matthew ^{[1
]}

Neeway, James J. ^{[1
]}

Lawter, Amanda R. ^{[1
]}

Levitskaia, Tatiana G. ^{[1
]}

Lukens, Wayne W. ^{[2
]}

Qafoku, Nikolla P. ^{[1
]}

机构：

[1] Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99352 USA

[2] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2016年 / 480卷

关键词：

Technetium; Nuclear waste; X-ray absorption spectroscopy; Waste forms; Hanford; CONTAMINATED GROUNDWATER; ZEROVALENT IRON; PERTECHNETATE; REDUCTION; TC-99; SEDIMENTS; REMOVAL; FE(II); PRODUCTS; SORPTION;

D O I：

10.1016/j.jnucmat.2016.09.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

At the U.S. Department of Energy Hanford Site, Tc-99 is a component of low-activity waste (LAW) fractions of the nuclear tank waste and removal of Tc from LAW streams would greatly benefit the site remediation process. In this study, we investigated the removal of Tc(VII), as pertechnetate, from deionized water (DIW) and a LAW simulant through batch sorption testing and solid phase characterization using tin (II) apatite (Sn-A) and SnCl2. Sn-A showed higher levels of Tc removal from both DIW and LAW simulant. Scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/XEDS) and X-ray absorption spectroscopy (XAS) of reacted Sn-A in DIW showed that TcO4- is reduced to Tc(IV) on the Sn-A surface. The performance of Sn-A in the LAW simulant was lowered due to a combined effect of the high alkalinity, which lead to an increased dissolution of Sn from the Sn-A, and a preference for the reduction of Cr(VI). (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：393 / 402

页数：10

共 43 条

[1]

Certa P. J., 2011, ORP11242 WASH RIV PR

[2] Reduction of pertechnetate by ferrous iron in solution: Influence of sorbed and precipitated Fe(II) [J].

Cui, DQ ;

Eriksen, TE .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1996, 30 (07) :2259-2262

[3] Removal of pertechnetate from simulated nuclear waste streams using supported zerovalent iron [J].

Darab, John G. ;

Amonette, Alexandra B. ;

Burke, Deborah S. D. ;

Orr, Robert D. ;

Ponder, Sherman M. ;

Schrick, Bettina ;

Mallouk, Thomas E. ;

Lukens, Wayne W. ;

Caulder, Dana L. ;

Shuh, David K. .

CHEMISTRY OF MATERIALS, 2007, 19 (23) :5703-5713

[4] STRUCTURAL CHARACTERIZATION OF A BRIDGED TC-99-SN-DIMETHYLGLYOXIME COMPLEX - IMPLICATIONS FOR CHEMISTRY OF TC-99M-RADIOPHARMACEUTICALS PREPARED BY SN(II) REDUCTION OF PERTECHNETATE [J].

DEUTSCH, E ;

ELDER, RC ;

LANGE, BA ;

VAAL, MJ ;

LAY, DG .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1976, 73 (12) :4287-4289

[5] Sorption of selenium anionic species on apatites and iron oxides from aqueous solutions [J].

Duc, M ;

Lefevre, G ;

Fedoroff, M ;

Jeanjean, J ;

Rouchaud, JC ;

Monteil-Rivera, F ;

Dumonceau, J ;

Milonjic, S .

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 2003, 70 (1-2) :61-72

[6]

Duncan J.B., 2012, LAB-RPT-12-00001, DOI DOI 10.2172/1045370

[7]

Duncan J.B., 2009, RPPRPT29195

[8] Oxidative Remobilization of Technetium Sequestered by Sulfide-Transformed Nano Zerovalent Iron [J].

Fan, Dimin ;

Anitori, Roberto P. ;

Tebo, Bradley M. ;

Tratnyek, Paul G. ;

Pacheco, Juan S. Lezama ;

Kukkadapu, Ravi K. ;

Kovarik, Libor ;

Engelhard, Mark H. ;

Bowden, Mark E. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (13) :7409-7417

[9] The standard electrode potential of the Sn4+/Sn2+ couple revisited [J].

Gajda, Tamas ;

Sipos, Pal ;

Gamsjaeger, Heinz .

MONATSHEFTE FUR CHEMIE, 2009, 140 (11) :1293-1303

[10] A short history of waste management at the Hanford Site [J].

Gephart, Roy E. .

PHYSICS AND CHEMISTRY OF THE EARTH, 2010, 35 (6-8) :298-306

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