School of Earth and Environment

Caroline Peacock Dr Caroline Peacock

Lecturer: Biogeochemistry; Deputy Postgraduate Research Tutor

Telephone number: +44(0) 113 34 37877
Email address: C.L.Peacock@leeds.ac.uk
Room: 9.148

Link to personal page

Biography

The overarching goal of my research is to better understand how molecular interactions control the reactivity and cycling of trace-metals in the terrestrial and marine environments. To this end, my work focuses on the mineral-water interface and the micro-scale processes that control soil and sediment geochemistry and the composition of natural waters. These processes play key roles in the biogeochemical cycling of micro-nutrients and the retardation of contaminants in the subsurface, both now and in the past.

Current research areas include probing the chemical reactivity of the abiotic and biotic mineral-water interface, investigating key biogeochemical controls on freshwater and marine chemistry, and applying mineral-water interface research to the understanding and development of novel paleoceanographic proxies for ocean anoxia and long-term climate change.

Work combines synchrotron-based X-ray spectroscopy, quantum mechanical modeling and aqueous geochemical modeling with novel laboratory sorption and stable isotope fractionation experiments.

Qualifications

  • BSc(Hons) Environmental Geoscience, University of Bristol
  • PhD Geochemistry, University of Bristol

Memberships/Fellowships

  • Member of The Mineralogical Society of Great Britain and Ireland (MinSoc)
  • Chair Environmental Mineralogy Group, special interest group of the MinSoc
  • Member of The Geochemical Society
  • Fellow of The Higher Education Academy

Research Interests

  • Mineral-water interfaces and interfacial processes
  • Biogeochemical cycling of trace-metals and micro-nutrients
  • Trace-metal signatures in terrestrial and marine sedimentary archives

Publications

  • Moon EM; Peacock CL (2013) Modelling Cu(II) adsorption to ferrihydrite and ferrihydrite-bacteria composites: Deviation from additive adsorption in the composite sorption system, Geochimica et Cosmochimica Acta, 104, pp.148-164. doi: 10.1016/j.gca.2012.11.030
  • Burke IT; Peacock CL; Lockwood CL; Stewart D; Mortimer R; Ward MB; Renforth P; Gruiz K; Mayes WM (2013) Behaviour of aluminium, arsenic and vanadium during the neutralisation of red mud leachate by HCl, gypsum or seawater., Environmental Science and Technology, . doi: 10.1021/es4010834
  • Nielsen SG; Wasylenki LW; Rehkamper M; Peacock CL; Xue Z; Moon EM (2013) Towards an understanding of thallium isotope fractionation during adsorption to manganese oxides, Geochimica et Cosmochimica Acta, . doi: 10.1016/j.gca.2013.05.004
  • Moon EM; Peacock CL (2012) Adsorption of Cu(II) to ferrihydrite and ferrihydrite-bacteria composites: Importance of the carboxyl group for Cu mobility in natural environments, Geochimica et Cosmochimica Acta, 92, pp.203-219. doi: 10.1016/j.gca.2012.06.012
  • Peacock CL; Moon EM (2012) Oxidative scavenging of thallium by birnessite: Explanation for thallium enrichment and stable isotope fractionation in marine ferromanganese precipitates, Geochimica et Cosmochimica Acta, 84, pp.297-313. doi: 10.1016/j.gca.2012.01.036
  • Burke IT; Mayes WM; Peacock CL; Brown AP; Jarvis AP; Gruiz K (2012) Speciation of arsenic, chromium and vanadium in red mud samples from the Ajka spill site, Hungary, Environmental Science and Technology, 46, pp.3085-3092. doi: 10.1021/es3003475
  • Moon EM; Peacock CL (2011) Adsorption of Cu(II) to Bacillus subtilis: A pH-dependent EXAFS and thermodynamic modelling study, Geochimica et Cosmochimica Acta, 75, pp.6705-6719. doi: 10.1016/j.gca.2011.08.004
  • Sherman DM; Peacock CL (2010) Surface complexation of Cu on birnessite (d-MnO2): Controls on Cu in the deep ocean, Geochimica et Cosmochimica Acta, 74, pp.6721-6730. doi: 10.1016/j.gca.2010.08.042
  • Peacock CL (2009) Physiochemical controls on the crystal-chemistry of Ni in birnessite: Genetic implications for ferromanganese precipitates, GEOCHIM COSMOCHIM AC, 73, pp.3568-3578. doi: 10.1016/j.gca.2009.03.020
  • Sherman DM; Peacock CL; Hubbard CG (2008) Surface complexation of U(VI) on goethite (alpha-FeOOH), GEOCHIM COSMOCHIM AC, 72, pp.298-310. doi: 10.1016/j.gca.2007.10.023
  • Sherman D; Hubbard C; Peacock C (2008) Surface complexation of U(VI) by Fe and Mn (hydr)oxides, In: Merkel; B J; Hasche-Berger A (Ed) Uranium, Mining and Hydrogeology, Springer. doi: 10.1007/978-3-540-87746-2
  • Peacock CL; Sherman DM (2007) Sorption of Ni by birnessite: Equilibrium controls on Ni in seawater, CHEM GEOL, 238, pp.94-106. doi: 10.1016/j.chemgeo.2006.10.019
  • Peacock CL; Sherman DM (2007) Crystal-chemistry of Ni in marine ferromanganese crusts and nodules, AM MINERAL, 92, pp.1087-1092. doi: 10.2138/am.2007.2378
  • Peacock CL; Sherman DM (2005) Copper(II) sorption onto goethite, hematite, and lepidocrocite: A surface complexation model based on ab initio molecular geometries and EXAFS spectroscopy (vol 68, pg 2623, 2004), GEOCHIM COSMOCHIM AC, 69, pp.5141-5142. doi: 10.1016/j.gca.2005.02.020
  • Peacock CL; Sherman DM (2005) Erratum: "Copper(II) sorption onto goethite, hematite, and lepidocrocite: A surface complexation model based on ab initio molecular geometries and EXAFS spectroscopy" (Geochimica et Cosmochimica Acta (2004) vol. 68 (2623-2637)), Geochimica et Cosmochimica Acta, 69, pp.5141-5142. doi: 10.1016/j.gca.2005.02.020
  • Peacock CL; Sherman DM (2005) Surface complexation model for multisite adsorption of copper(II) onto kaolinite, GEOCHIM COSMOCHIM AC, 69, pp.3733-3745. doi: 10.1016/j.gca.2004.12.029
  • Peacock CL; Sherman DM (2004) Vanadium(V) adsorption onto goethite (alpha-FeOOH) at pH 1.5 to 12: A surface complexation model based on ab initio molecular geometries and EXAFS spectroscopy, GEOCHIM COSMOCHIM AC, 68, pp.1723-1733. doi: 10.1016/j.gca.2003.10.018
  • Peacock CL; Sherman DM (2004) Copper(II) sorption onto goethite, hematite and lepidocrocite: A surface complexation model based on ab initio molecular geometries and EXAFS spectroscopy, GEOCHIM COSMOCHIM AC, 68, pp.2623-2637. doi: 10.1016/j.gca.2003.11.030
  • Peacock CL; Sherman DM (2002) Vanadium (III, IV and V) sorption onto goethite alpha-FeOOH, GEOCHIM COSMOCHIM AC, 66, pp.A583-A583.