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Prof. Dr. Christian Mikutta


Leiter Abteilung Bodenmineralogie
Institut für Mineralogie
Leibniz Universität Hannover
Callinstr. 3
D-30167 Hannover
Raum: 2501-232

Telefon:+49 (0)511 762-19982
Fax:+49 (0)511 762-3045
E-Mail:c.mikuttamineralogie.uni-hannover.de

Bild von Prof. Dr. Christian Mikutta

Professional career

Since 2018

Full Professor of Soil Mineralogy (DFG Heisenberg Professorship), Institute of Mineralogy, Faculty of Natural Sciences, Leibniz University Hannover, Germany

2015-2016

Assistant Professor of Environmental Geochemistry, Section for Environmental Chemistry and Physics, Department of Plant and Environmental Sciences, University of Copenhagen, Denmark

2008-2015

Senior Scientist ("Oberassistent"), Soil Chemistry Group, Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zurich, Switzerland

2007-2008          

Postdoctoral Researcher, Water Resources and Drinking Group, Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland

2006-2007          

Postdoctoral Researcher, Soil Chemistry Group, Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zurich, Switzerland

2003-2006          

Ph.D. Student, Soil Science Group, Institute of Ecology, Technische Universität Berlin, Germany

2002                  

Research Assistant, Institute of Interdisciplinary Isotope Research e.V., Leipzig, Germany

Education and degrees

2016

Habilitation (Postdoctoral lecture qualification; Venia Legendi in "Biogeochemistry and Pollutant Dynamics"), Department of Environmental Systems Science, ETH Zurich, Switzerland

2006

Ph.D. (rer. nat.) in Soil Science, Technische Universität Berlin, Germany

2002

M.Sc. ("Hauptdiplom Geographie"), University of Leipzig, Germany

1999

B.Sc. ("Vordiplom Geographie"), University of Leipzig, Germany 1997.2002 Studies of Geography, Geology and Chemistry, University of Leipzig, Germany 

Research interests

  • Structure and reactivity of minerals, mineraloids, and mineral-organic associations 
  • Complexation and redox reactions at mineral-water interfaces 
  • Solid- and liquid-phase speciation, distribution, bioavailability, and dynamics of metal and metalloid contaminants in the Critical Zone 
  • Biogeochemical cycling of carbon, sulfur, iron, and manganese in soil environments 
  • Application of synchrotron-based X-ray absorption spectroscopy, spectrometry, and scattering techniques in biogeochemical soil research

Current research projects

  • DFG-Project "Soil manganese: Speciation, transformation, and reactivity" (Leitung: Prof. Dr. Christian Mikutta; Laufzeit: 3 Jahre (2018-2021))
  • DFG-Project "Aluminum interactions with iron oxides in the absence and presence of silicic acid" (Leitung: Prof. Dr. Christian Mikutta, Prof. Dr. Robert Mikutta; Laufzeit: 3 Jahre (2018-2021)) 
  • DFG-Project "Formation and properties of mineral-organic soil interfaces as revealed by X-ray photoelectron spectroscopy" (Leitung: Prof. Dr. Robert Mikutta, Dr. Klaus Kaiser, Prof. Dr. Christian Mikutta; Laufzeit: 3 Jahre (2018-2021))

 Others

Since 2018        

Chair of the Soil Mineralogy Committee of the German Soil Science Society

Since 2016        

Member of the CERIC (Central European Research Infrastructure Consortium) proposal review board

2012-2014         

Member of the beamtime proposal review committee C04 of the European Synchrotron Radiation Facility (ESRF), Grenoble, France

Since 2003        

Member of the German Soil Science Society

 Publications

  1. Ehlert K., Mikutta C., Kretzschmar R. (2018) Mineralogical controls on the bioaccessibility of arsenic in Fe(III)-As(V) coprecipitates. Environ. Sci. Technol. 52, 616-627.
  2. Drahota P., Mikutta C., Falteisek L., Duchoslav V., Klementová M. (2017) Biologically induced formation of realgar deposits in soil. Geochim. Cosmochim. Acta 218, 237-256.
  3. ThomasArrigo L. K., Mikutta C., Byrne J., Kappler A., Kretzschmar R. (2017) Iron(II)-catalyzed iron atom exchange and mineralogical changes in iron-rich organic freshwater flocs: An iron isotope tracer study. Environ. Sci. Technol. 51, 6897-6907. 
  4. Mikutta C., Langner P., Bargar J. R., Kretschmar R. (2016) Tetra- and hexavalent uranium forms bidentate-mononuclear complexes with particulate organic matter in a naturally uranium-enriched peatland. Environ. Sci. Technol. 50, 10465-10475.
  5. Ehlert K., Mikutta C., Kretzschmar R. (2016) Effect of manganese oxide on arsenic reduction and leaching from contaminated floodplain soil. Environ. Sci. Technol. 50, 9251-9261. 
  6. Mikutta C. and Rothwell J. J. (2016) Peat bogs as hotspots for organoarsenical formation and persistence. Environ. Sci. Technol. 50, 4314-4323. (Featured as ACS editor's choice) 
  7. ThomasArrigo L. K., Mikutta C., Lohmayer R., Planer-Friedrich B., Kretzschmar R. (2016) Sulfidization of organic freshwater flocs from a minerotrophic peatland: Speciation changes of iron, sulfur, and arsenic. Environ. Sci. Technol. 50, 3607-3616. 
  8. Kleber M., Eusterhues K., Keiluweit M., Mikutta C., Mikutta R., Nico P. S. (2015) Mineral-organic associations: Formation, properties, and relevance in soil environments. Adv. Agron. 130, 1-140. 
  9. Mikutta C., Mandaliev P. N., Mahler N., Kotsev T., Kretzschmar R. (2014) Bioaccessibility of arsenic in mining-impacted river floodplain soils. Environ. Sci. Technol. 48, 13468-13477. 1
  10. ThomasArrigo L. K., Mikutta C., Byrne J., Barmettler K., Kappler A., Kretzschmar R. (2014) Iron and arsenic speciation and distribution in organic flocs from streambeds of an arsenic-enriched peatland. Environ. Sci. Technol. 48, 13218-13228. 
  11. Ehlert K., Mikutta C., Kretzschmar R. (2014) Impact of birnessite on arsenic and iron speciation during microbial reduction of arsenic-bearing ferrihydrite. Environ. Sci. Technol. 48, 11320-11329. 
  12. Mikutta C., Schröder C., Michel F. M. (2014) Total X-ray scattering, EXAFS, and Mössbauer spectroscopy analyses of amorphous ferric arsenate and amorphous ferric phosphate. Geochim. Cosmochim. Acta 140, 708-719. 
  13. Hoffmann M., Mikutta C., Kretzschmar R. (2014) Arsenite binding by sulfhydryl groups in the presence and absence of ferrihydrite: A model study. Environ. Sci. Technol. 48, 3822-3831. 
  14. Langner P., Mikutta C., Kretzschmar R. (2014) Oxidation of organosulfur-coordinated arsenic and realgar in peat: Implications for the fate of arsenic. Environ. Sci. Technol. 48, 2281-2289. 
  15. Mandaliev P. N., Mikutta C., Barmettler K., Kotsev T., Kretzschmar R. (2014) Arsenic species formed from arsenopyrite weathering along a contamination gradient in circumneutral river floodplain soils. Environ. Sci. Technol. 48, 208-217. 
  16. Mikutta C., Mandaliev P. N., Kretzschmar R. (2013) Response to comment on 'New clues to the local atomic structure of short-range ordered ferric arsenate from extended X-ray absorption fine structure spectroscopy.' Environ. Sci. Technol. 47, 1301-1302. 
  17. Hoffmann M., Mikutta C., Kretzschmar R. (2013) Arsenite binding to natural organic matter: Spectroscopic evidence for ligand exchange and ternary complex formation. Environ. Sci. Technol. 47, 12165-12173. 
  18. Langner P., Mikutta C., Suess E., Marcus M. A., Kretzschmar R. (2013) Spatial distribution and speciation of arsenic in peat studied with microfocused X-ray fluorescence spectrometry and X-ray absorption spectroscopy. Environ. Sci. Technol. 47, 9706-9714. 
  19. Mikutta C., Mandaliev P. N., Kretzschmar R. (2013) New clues to the local atomic structure of short-range ordered ferric arsenate from extended X-ray absorption fine structure spectroscopy. Environ. Sci. Technol. 47, 3122-3131. 
  20. Hoffmann M., Mikutta C., Kretzschmar R. (2012) Bisulfide reaction with natural organic matter enhances arsenite sorption: Insights from X-ray absorption spectroscopy. Environ. Sci. Technol. 46, 11788-11797. 
  21. Langner P., Mikutta C., Kretzschmar R. (2012) Arsenic sequestration by organic sulphur in peat. Nature Geosci. 5, 66-73. 
  22. Mikutta C. and Kretzschmar R. (2011) Spectroscopic evidence for ternary complex formation between arsenate and ferric iron complexes of humic substances. Environ. Sci. Technol. 45, 9550-9557. 
  23. Mikutta C. (2011) X-ray absorption spectroscopy study on the effect of hydroxybenzoic acids on the structure and formation of ferrihydrite. Geochim. Cosmochim. Acta 75, 5122-5139.
  24. Mikutta C., Frommer J., Voegelin A., Kaegi R., Kretzschmar R. (2010) Effect of citrate on the local Fe coordination in ferrihydrite, arsenate binding, and ternary complex formation. Geochim. Cosmochim. Acta 74, 5574-5592. 
  25. Mikutta C., Wiederhold J. G., Cirpka O. A., Hofstetter T. B., Bourdon B., Von Gunten U. (2009) Iron isotope fractionation and atom exchange during sorption of ferrous iron to mineral surfaces. Geochim. Cosmochim. Acta 73, 1795-1812. 
  26. Mikutta C., Mikutta R., Bonneville S., Wagner F., Voegelin A., Christl I., Kretzschmar R. (2008) Synthetic coprecipitates of exopolysaccharides and ferrihydrite. Part I. Characterization. Geochim. Cosmochim. Acta 72, 1111-1127. 
  27. Mikutta C. and Kretzschmar R. (2008) Synthetic coprecipitates of exopolysaccharides and ferrihydrite. Part II. Siderophore-promoted dissolution. Geochim. Cosmochim. Acta 72, 1128-1142. 
  28. Mikutta R., Mikutta C., Kalbitz K. Scheel T., Kaiser K., Jahn R. (2007) Microbial mineralization of organic matter bound to minerals via different binding mechanisms. Geochim. Cosmochim. Acta 71, 2569-2590.
  29. Mikutta C., Krüger J., Schaumann G. E., Lang F. (2006) Restructuring of polygalacturo-nate coatings on alumina upon hydration - effects on phosphate sorption kinetics. Geochim. Cosmochim. Acta 70, 2957-2969. 
  30. Mikutta C., Lang F., Kaupenjohann M. (2006) Citrate impairs the micropore diffusion of phosphate into pure and C-coated goethite. Geochim. Cosmochim. Acta 70, 595-607. 
  31. Mikutta, R. and Mikutta C. (2006) Stabilization of organic matter at micropores (<2 nm) in acid forest subsoils. Soil Sci. Soc. Am. J. 70, 2049-2056. 
  32. Mikutta C., Krüger J., Lang F., Kaupenjohann M. (2006) Acid polysaccharide coatings on microporous goethites - controls of the slow phosphate sorption. Soil Sci. Soc. Am. J. 70, 1547-1555. 
  33. Mikutta C., Neumann G., Lang F. (2006) Phosphate desorption from goethite in the presence of galacturonate, polygalacturonate, and maize mucigel (Zea mays L.). Soil Sci. Soc. Am. J. 70, 1731-1740. 
  34. Mikutta C., Lang F., Kaupenjohann M. (2006) Kinetics of phosphate sorption to polygalacturonate-coated goethite. Soil Sci. Soc. Am. J. 70, 541-549. 
  35. Mikutta C., Lang F., Kaupenjohann M. (2004) Soil organic matter clogs mineral pores: evidence from 1H-NMR logging and N2 adsorption. Soil Sci. Soc. Am. J. 68, 1853-1862. 
  36. Kleber M., Mikutta C., Jahn R. (2004) Andosols in Germany - pedogenesis and properties. Catena 56, 67-83.

Current teaching

To be added (Under construction!)