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Reduction of antimony by nano-particulate magnetite and mackinawite

Published online by Cambridge University Press:  05 July 2018

R. Kirsch ,
A. C. Scheinost ,
A. Rossberg ,
D. Banerjee  and
L. Charlet
R. Kirsch*
Affiliation:
Institute of Radiochemistry, FZD, Dresden, Germany, and ROBL at the European Synchrotron Radiation Facility (ESRF), BP220, 38043 Grenoble, France Laboratoire de Géophysique Interne et Tectonophysique (LGIT), BP 53, 38041 Grenoble, France
A. C. Scheinost
Affiliation:
Institute of Radiochemistry, FZD, Dresden, Germany, and ROBL at the European Synchrotron Radiation Facility (ESRF), BP220, 38043 Grenoble, France
A. Rossberg
Affiliation:
Institute of Radiochemistry, FZD, Dresden, Germany, and ROBL at the European Synchrotron Radiation Facility (ESRF), BP220, 38043 Grenoble, France
D. Banerjee
Affiliation:
Institute of Radiochemistry, FZD, Dresden, Germany, and ROBL at the European Synchrotron Radiation Facility (ESRF), BP220, 38043 Grenoble, France
L. Charlet
Affiliation:
Laboratoire de Géophysique Interne et Tectonophysique (LGIT), BP 53, 38041 Grenoble, France
*
*E-mail: [email protected]
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Abstract

The speciation of antimony is strongly influenced by its oxidation state (V, III, 0, —III). Redox processes under anaerobic groundwater conditions may therefore greatly alter the environmental behaviour of Sb. Employing X-ray absorption and photoelectron spectroscopy, we show here that Sb(V) is reduced to Sb(III) by magnetite and mackinawite, two ubiquitous Fe(II)-containing minerals, while Sb(III) is not reduced further. At the surface of magnetite, Sb(III) forms a highly symmetrical sorption complex at the position otherwise occupied by tetrahedral Fe(III). The Sb(V) reduction increases with pH, and at pH values >6.5 Sb(V) is completely reduced to Sb(III) within 30 days. In contrast, at the mackinawite surface, Sb(V) is completely reduced across a wide pH range and within 1 h. The Sb(V) reduction proceeds solely by oxidation of surface Fe(II), while the oxidation state of sulphide is conserved. Independent of whether Sb(V) or Sb(III) was added, an amorphous or nano-particulate SbS3-like solid formed.

Keywords

antimonyreductionmackinawitemagnetiteEXAFS
Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 185 - 189
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

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References

Gallegos, T.J., Hyun, S.P. and Hayes, K.F. (2007) Spectroscopic investigation of the uptake of arsenite from solution by synthetic mackinawite. Environmental Science and Technology, 41, 7781–7786.CrossRefGoogle ScholarPubMed
Horrocks, A.R., Kandola, B.K., Davies, P.J., Zhang, S. and Padbury, S.A. (2005) Developments in flame retardant textiles - a review. Polymer Degradation and Stability, 88, 3–12.CrossRefGoogle Scholar
Leuz, A.K., Monch, H. and Johnson, C.A. (2006) Sorption of Sb(iii) and Sb(V) to goethite: Influence on Sb(iii) oxidation and mobilization. Environmental Science and Technology, 40, 7277–7282.CrossRefGoogle ScholarPubMed
Li, S.X., Zheng, F.Y., Hong, H.S., Deng, N.S. and Zhou, X.Y. (2006) Photo-oxidation of Sb(iii) in the seawater by marine phytoplankton-transition metals-light system. Chemosphere, 65, 1432–1439.CrossRefGoogle ScholarPubMed
Livens, F.R., Jones, M.J., Hynes, A.J., Charnock, J.M., Mosselmans, J.F.W., Hennig, C. Steele, H., Collison, D., Vaughan, D.J., Pattrick, R.A.D., Reed, W.A. and Moyes, L.N. (2004) X-ray absorption spectroscopy studies of reactions of technetium, uranium and neptunium with mackinawite. Journal of Environmental Radioactivity, 74, 211–219.CrossRefGoogle ScholarPubMed
Mullet, M., Boursiquot, S. and Ehrhardt, J.J. (2004) Removal of hexavalent chromium from solutions by mackinawite, tetragonal FeS. Colloids and Surfaces A, 244, 77–85.CrossRefGoogle Scholar
Nakata, K., Nagasaki, S., Tanaka, S., Sakamoto, Y., Tanaka, T. and Ogawa, H. (2004) Reduction rate of neptunium(V) in heterogeneous solution with magnetite. Radiochimica Acta, 92, 145–149.CrossRefGoogle Scholar
Powell, B.A., Fjeld, R.A., Kaplan, D.I., Coates, J.T. and Serkiz, S.M. (2004) Pu (V) O2+ adsorption and reduction by synthetic magnetite (Fe3O4). Environmental Science and Technology, 38, 6016–6024.CrossRefGoogle Scholar
Raouf, M.W.A., Farah, K., Nofal, M. and Alian, A. (1997) Studies on sorption of antimony and europium from liquid organic and aqueous radioactive wastes on different sorbents. Journal of Radioanalytical and Nuclear Chemistry, Ti.\, 153–159.CrossRefGoogle Scholar
Rossberg, A., Reich, T. and Bernhard, G. (2003) Complexation of uranium(VI) with protocatechuic acid — application of iterative transformation factor analysis to EXAFS spectroscopy. Analytical and Bioanalytical Chemistry, 376, 631–638.CrossRefGoogle ScholarPubMed
Scheinost, A.C. and Charlet, L. (2008) Selenite reduction by mackinawite, magnetite and siderite: XAS characterization of nanosized redox products. Environmental Science and Technology, 42, 1984–1989.CrossRefGoogle ScholarPubMed
Scheinost, A.C, Rossberg, A., Vantelon, D., Xifra, I., Kxetzschmar, R., Leuz, A.K., Funke, H. and Johnson, C.A. (2006) Quantitative antimony speciation in shooting-range soils by EXAFS spectroscopy. Geochimica et Cosmochimica Acta, 70, 3299–3312.CrossRefGoogle Scholar
Watanabe, N., Inoue, S. and Ito, H. (1999) Antimony in municipal waste. Chemosphere, 39, 1689–1698.CrossRefGoogle ScholarPubMed