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Southern Cross GeoScience

Dr Kerstin Hockmann

Dr Kerstin Hockmann

Education:
Dr. sc. ETH Zurich, Institute of Terrestrial Ecosystems, ETH Zurich, Switzerland. Thesis title: "Antimony leaching from contaminated soil under changing redox conditions"

Diplom (M.Sc.) Geoecology, TU Braunschweig, Germany, and Swedish University of Agriculture, Uppsala, Sweden

E: kerstin.hockmann@scu.edu.au

Research interests/background

I am interested in the biogeochemical processes controlling the mobility and bioavailability of trace elements in soils and sediments. Much of my work has focused on the behaviour of toxic antimony (Sb) in anoxic environments. After my PhD at ETH Zurich, I came to Australia with an SNSF Early. Postdoc Mobility fellowship to explore how sulfide generation and associated iron mineral (trans)formations - two key processes in wetland soils and sediments - impact Sb speciation and mobility. This knowledge is important for risk assessment of antimony-contaminated sites such as the nearby McCleay River catchment (NSW) as well as for many other mining legacies worldwide.

Awards and scholarships

  • ETH Medal Award for outstanding Doctoral Thesis (2015)
  • Environmental Chemistry student award for the best oral presentation (12th International Conference on Biogeochemistry of Trace Elements in the Environment ICOBTE, Athens, Georgia, USA, 2013)
  • Environmental Chemistry student award for the best oral presentation (2nd International Workshop on Antimony in the Environment, Jena, Germany, 2011).
  • Diplom (M.Sc.) faculty award (2008) for excellence in studies of Geoecology
  • Scholarship from the German National Academic Foundation (Studienstiftung des Deutschen Volkes) for studies of Geoecology (2005 - 2008)
  • Vordiplom (B.Sc.) university award (2005) for excellent studies.

Research grants

  • 48 hrs. Australian Synchrotron (AS162/XAS/10710) "Resolving the effect of seawater inundation and sulfate reduction on antimony mobility in a contaminated wetland " 2016 (Lead investigator: William W. Bennett)
  • 72 hrs. Australian Synchrotron (AS162/XAS/10765) "Antimony mobility in sulfidic environments: an XAS study of antimony sorption to mackinawite (FeS) " 2016 (Lead investigator)
  • $13,045. Southern Cross Research Seed Grant. Mineralogical controls on the mobility of Antimony in a tailings contaminated coastal wetland. 2015. (Lead investigator: Scott G. Johnston)
  • $11,400. Southern Cross Research Seed grant. New perspectives on antimony mobility in subsurface environments: resolving unexplored interactions with the sulfur cycle. (Lead investigator: Edward D. Burton)
  • $145,300. SNSF Early Postdoc.Mobility fellowship (SNSF Grant P2EZP2_159106). „Exploring the coupling of antimony mobility to sulphur transformations in anoxic environments" 2015 - 2017. (Lead investigator)
  • $12,500. armasuisse Immobilien, Eidgenössisches Departement für Verteidigung, Bevölkerungsschutz und Sport „Exploring seasonal effects in antimony and toxic metal leaching from acidic and calcareous shooting range soil" 2014-2015. (Lead investigator)
  • $48,200. armasuisse Immobilien, Eidgenössisches Departement für Verteidigung, Bevölkerungsschutz und Sport „Antimony and toxic metal leaching from shooting range soils under different soil management" 2011-2013. (Lead investigator)
  • $309,600. Swiss National Science Foundation (SNSF Grant 200021-13025). "Antimony leaching from contaminated soil under different water regimes" 2010 - 2013. (Project development and proposal writing; Lead applicant: R. Schulin)

Publications

Journal articles

2016

Rajpert, L., Kolvenbach, B.A., Ammann, E.M., Hockmann, K., Nachtegaal,M., Eiche, E., Schaeffer, A., Corvini, p. F.-X., Sklodowska,A., and M. Lenz. 2016. Arsenic mobilization from historically contaminated mining soils in a continuously operated bioreactor: Implications for risk assessment. Environmental Science and Technology 50:9124-9132.

2015

Hockmann, K., Lenz, M., Tandy, S., Schulin, R., 2015. Antimony retention and release from drained and waterlogged shooting range soil under field conditions. Chemosphere 134: 536-543.

Cui, X.-D., Wang, Y.-J., Hockmann, K., Zhou, D.-M., 2015. Effect of iron plaque on antimony uptake by rice (Oryza sativa L.). Environmental Pollution 204: 133-140.

2014

Hockmann, K., Tandy, S., Lenz, M., Schulin, R., 2014. Leaching of antimony from contaminated soil under manganese- and iron-reducing conditions: column experiments. Environmental Chemistry 11: 624-631.

Hockmann, K., Lenz, M., Tandy, S., Nachtegaal, M., Janousch, M., Schulin, R., 2014. Release of antimony from contaminated soil induced by redox changes. Journal of Hazardous Materials 275: 215-221.

2013

Wan, X.-m., Tandy, S., Hockmann, K., Schulin, R., 2013. Changes in Sb speciation with waterlogging of shooting range soils and impacts on plant uptake. Environmental Pollution 172: 53-60.

Wan, X.-m., Tandy, S., Hockmann, K., Schulin, R., 2013. Effects of waterlogging on the solubility and redox state of Sb in a shooting range soil and its uptake by grasses: a tank experiment. Plant and Soil 371: 155-166.

2012

Evangelou, M.W.H., Hockmann, K., Pokharel, R., Jakob, A., Schulin, R., 2012. Accumulation of Sb, Pb, Cu, Zn and Cd by various plants species on two different relocated military shooting range soils. Journal of Environmental Management 108: 102-107.

2010

Conesa, H.M., Wieser, M., Gasser, M., Hockmann, K., Evangelou, M.W.H.,Studer, B., Schulin, R. 2010. Effects of three amendments on extractability and fractionation of Pb, Cu, Ni and Sb in two shooting range soils. Journal of Hazardous Materials 181: 845-850.

Conference proceedings

Hockmann, K., Planer-Friedrich, B., E.D. Burton. Sorption of antimony(V) and antimony(III) to mackinawite (FeS). 26th V.M. Goldschmidt Conference, June 2012, Yokohama, Japan. (oral presentation)

Hockmann, K., Tandy, S., Studer, B., Keller, M., Lenz, M., Schulin. R. 2015. Antimony in shooting range soil - an environmental problem in Switzerland, October 2015, Leipzig, Germany. (oral presentation by R. Schulin )

Hockmann, K., Tandy, S., Studer, B., Lenz, M., Schulin. R. 2015. Antimony and toxic metal uptake by plants growing on drained and waterlogged shooting range soil, October 2015, Leipzig, Germany. (oral presentation by S. Tandy)

Hockmann, K., Tandy, S., Studer, B., Lenz, M., Schulin. R. 2015. Antimony and toxic metal uptake by plants growing on drained and waterlogged shooting range soil. 13th International Conference on Biogeochemistry of Trace Elements in the Environment ICOBTE, July 2015, Fukuoka, Japan. (oral presentation)

Hockmann, K., Tandy, S., Lenz, M., Schulin. R. 2013. Release of antimony from contaminated soil induced by redox changes. 23rd V.M. Goldschmidt Conference, August 2013, Florence, Italy. (oral presentation)

Hockmann, K., Tandy, S., Lenz, M., Schulin. R. Leaching of antimony from contaminated soil under changing redox conditions. 12th International Conference on Biogeochemistry of Trace Elements in the Environment ICOBTE, June 2013, Athens, Georgia, USA. (oral presentation)

Hockmann, K., Tandy, S., Lenz, M., Schulin. R. Mobility of antimony in soils under changing redox conditions. 22nd V.M. Goldschmidt Conference, June 2012, Montreal, Canada. (oral presentation)

Reiser, R., Oberholzer, H.R., Rek,J., Holpp, M., Weisskopf, P., Hockmann, K., Tandy, S., Schulin, R. 2012. A method for coupled, quasisimultaneous measurement of oxygen diusion rate (ODR) and redox potential (Eh) in unsaturated agricultural soil. Eurosoil, July 2012, Bari, Italy. (poster presentation)

Hockmann, K., Tandy, S., Lenz, M., Schulin. R. 2011. Desorption and leaching of antimony from relocated shooting range soil: Lysimeter and batch experiments. 11th International Conference on Biogeochemistry of Trace Elements in the Environment ICOBTE, July 2011, Florence, Italy. (oral presentation)

Hockmann, K., Tandy, S., Lenz, M., Schulin. R. 2011. Effect of humic acids on antimony sorption to goethite. 2nd International Workshop on Antimony in the Environment, August 2011, Jena, Germany. (oral presentation)

Wan, X.m., Evangelou, M.W.H., Hockmann, K., Tandy, S., Schulin, R. 2011. Phytomanagement of relocated shooting range soil. 2nd International Workshop on Antimony in the Environment, August 2011, Jena, Germany. (oral presentation)

Book chapters

Hockmann, K. and Schulin, R., 2013. Leaching of antimony from contaminated soils. In: Selim, H.M. (Ed.), Competitive sorption and transport of heavy metals in soils. Boca Raton. CRC Press. Taylor & Francis Group, pp. 119-145.