kins4 Soil and Environmental Biogeochemistry - NC State Soil Science


NC State University - Department of soil science

Owen W. Duckworth


Roll On, You Sturdy Golden Bears Postdoctoral Scholar, Division of Ecosystem Sciences
University of California, Berkeley, California

My Boys Are Wicked Smaht Ph.D., Engineering and Applied Sciences
Harvard University

Go Heels! 1957,1982,1993,2003,2009! M.S., Environmental Sciences and Engineering
University of North Carolina, Chapel Hill

Roll Tribe! B.S., Chemistry and Geology, cum laude
College of William and Mary

Research Interests

The activity of microbes greatly affects the biogeochemical flow of nutrients and contaminants in the environment. Our research primarily focuses on the thermodynamics and kinetics of aqueous and interfacial reactions involving biogenic exudates that contribute to understanding the biogeochemical cycling of natural and anthropogenic species. We blend traditional wet-chemical, field, and microbiological methods with modern spectroscopic, microscopic, molecular biology, and theoretical techniques to obtain an understanding of mechanisms and reaction pathways on molecular to macroscopic scales.

Research Publications

55. Duckworth, O.W. (2018) Microbial Exudates in The Encyclopedia of Water: Science, Technology, and Society, Maurice, P.A., (ed.), in press.

54. Robarge, W.P., Duckworth, O.W., Osmond, D.L., Smyth, T.J., and River, M. (2017) Commentary on "A possible trade-off between clean air and clean water" by Smith et al. (2017). Journal of Soil and Water Conservation, 97A-98A. Link

53. Scheibener, S.A., Rivera, N.A., Hesterberg, D., Duckworth, O.W. and Buchwalter, D.B. (2017) Trace element release from coal fly-ash and incorporation into aquatic food webs. Environmental Toxicology and Chemistry, 36, 2991-2996. Link

52. Rivera, N.A., Hesterberg, D., Kaur, N., and Duckworth, O.W. (2017) Chemical Speciation of Potentially Toxic Trace Metals in Coal Fly Ash Associated with the Kingston Fly Ash Spill. Energy and Fuels, 31, 9652-9659. Link

51. Saad, E.M., Sun, J. Chen, S., Borkiewicz, O.J., Zhu, M., Duckworth, O.W., and Tang, Y. (2017) Siderophore and organic acid promoted dissolution and transformation of Cr(III)-Fe(III)-(oxy)hydroxides. Environmental Science and Technology, 51, 3223-3232. Link

50. Almarez, N., Whitaker, A.H., Andrews, M.Y., and Duckworth, O.W. (2017) Assessing Biomineral Formation by Iron-oxidizing Bacteria (FeOB) in a Circumneutral Creek. Journal of Contemporary Water Research and Education, 160, 60-71. Link

49. Duckworth, O.W., Markarian, D.S., Parker, D.L., and, Harrington, J.M. (2017) A Two-Column Flash Chromatography Approach to Pyoverdin Production from Pseudomonas putida GB1, Journal of Microbial Methods, 135, 11-13. Link

48. Duckworth, O.W., Gardner, T.G., Rivera, N.A., Andrews, M.Y., Santelli, C.M., and Polizzotto, M.L. (2017) Morphology, Structure, and Metal Binding Mechanisms of Biogenic Manganese Oxides in a Superfund Site Treatment System, Environmental Science: Processes and Impacts, 19, 50-58. Link

47. Sowers, T.D., Harrington, J.M., Polizzotto, M.L., and Duckworth, O.W. (2017) Sorption of Arsenic to Biogenic Iron (Oxyhydr)oxides Produced in Circumneutral Environments, Geochimica et Cosmochimica Acta, 198, 194-207. Link

46. Andrews, M.Y. and Duckworth, O.W. (2016) A Universal Assay for the Detection of Siderophore Activity in Natural Waters, Biometals, 6, 1085-1095. Link

45. Gillispie, E.C., Austin, R.E., Rivera, N.A., Bolich, R., Duckworth, O.W., Bradley, P., Amoozegar, A., Hesterberg, D., and Polizzotto, M.L. (2016) Soil Weathering as an Engine for Manganese Contamination of Well Water. Environmental Science and Technology, 50, 9963-9971. Link

44.Andrews, M.Y., Santelli, S.M., Duckworth, O.W. (2016) Digital Image Quantification of Siderophores on Agar Plates, Data in Brief, 6, 890-898. Link

43. Andrews, M.Y., Santelli, S.M., and Duckworth, O.W. (2016) Layer Plate CAS Assay for the Quantitation of Siderophore Production and Determination of Exudation Patterns for Fungi, Journal of Microbiological Methods, 121, 41-43. Link

42. Droz, B., Dumas, N., Duckworth, O.W. and Peña, J., (2015) Structure and sorption reactivity of biogenic MnO2 precipitated by bacterial and fungal cultures, Environmental Science and Technology, 49, 4200-4208. Link

41. Gillispie, E., Sowers, T.D., Duckworth, O.W., and Polizzotto, M.L. (2015) Soil Pollution Due to Irrigation with Arsenic-Contaminated Groundwater: Current State of Science, Current Pollution Reports, 1, 1-12. Link

40. Harrington, J.M., Duckworth, O.W., and Haselwandter, K. (2015) The Fate of Siderophores: Antagonistic Environmental Interactions in Exudate-Mediated Micronutrient Uptake, Biometals, 28, 461-472. Link

39. Rivera, N.A., Kaur, N, Hesterberg, D., Ward, C.R., Austin, R.E. and Duckworth, O.W. (2015) Chemical composition, speciation, and elemental associations in coal fly ash samples related to the Kingston ash spill, Energy and Fuels, 29, 954-967. Link

38. Kang, J., Heitman, J.L., Amoozegar, A., Duckworth, O.W., and McLaughlin, R.A. (2015) Transport of dissolved polyacrylamide in a clay loam soil, Geoderma, 243-244, 108-114. Link

37. Kraemer, S.M., Duckworth, O.W., Harrington, J.M., and Schenkeveld, W. D. C. (2015) Metallophores and trace metals biogeochemistry, Aquatic Geochemistry, 21, 159-195. Link

36. Akafia, M.M., Harrington, J.M.,Bargar, J.R., and Duckworth, O.W. (2014) Metal Oxyhydroxide Dissolution as Promoted by Structurally Diverse Siderophores and Oxalate, Geochimica et Cosmochimica Acta, 141, 258-269. Link

35. Duckworth, O.W., Akafia, M.M., Andrews, M.Y., and Bargar, J.R. (2014) Siderophore-Promoted Dissolution of Chromium from Hydroxide Minerals, Environmental Science: Processes and Impacts, 16, 1348-1359. Link
See Owen's profile as an emerging investigator.

34. Kang, J., McLaughlin, R.A., Sowers, T.D., Duckworth, O.W., Amoozegar, A., and Heitman, J.L. (2013) Turbidimetric determination of anionic polyacrylamide in soil extracts. Journal of Environmental Quality, 42, 1902-1907. Link

33. Kruft, B.I., Harrington, J.M., Duckworth, O.W., Jarzecki, A.A. (2013) Quantum mechanical investigation of aqueous desferrioxamine B metal complexes: Trends in structure, binding, and spectroscopy, Journal of Inorganic Biochemistry, 129, 150-161. Link

32. Abit, S.M., Vepraskas, M.J., Duckworth, O.W., and Amoozegar A. (2013) Dissolution of Phosphorus into Pore-Water Flowing through an organic soil, Geoderma, 197-198, 51-58. Link

31. Wu L., Osmond, D.L., Graves, A.K., Burchell, M.R., and Duckworth, O.W. (2012) Relationships between nitrogen transformation rates and gene abundance in riparian buffer soils, Environmental Management, 50, 861-874. Link

30. Park, M., Kim, H.-J., Kim, K., Duckworth, O.W., and Komarneni, S. (2012) Hydronium-promoted equilibrium mechanism for the alkali metal cation exchange reaction in Na-4-mica, Journal of Physical Chemistry C, 116, 18678-18683. Link

29. Harrington, J.M., Parker, D.L., Bargar, J.R., Jarzecki, A.A., Tebo, B.M., Sposito, G., and Duckworth, O.W. (2012) Structural dependence of Mn complexation by siderophores: Donor group dependence on complex stability and reactivity, Geochimica et Cosmochimica Acta, 88, 106-119. Link

28. Harrington, J.M., Bargar, J.R., Jarzecki, A.A., Roberts, J.G., Sombers, L.A. and Duckworth, O.W. (2012) Trace metal complexation by the triscatecholate siderophore protochelin: structure and stability, Biometals, 25, 393-412. Link

27. Saal, L.B., and Duckworth, O.W. (2010) Synergistic Dissolution of Manganese Oxides as Promoted by Siderophores and Small Organic Acids, Soil Science Society of America Journal, 74, 2032-2038. Link

26. Bi, Y., Hesterberg, D. L., and Duckworth, O.W. (2010) Siderophore-Promoted Dissolution of Cobalt from Hydroxide Minerals, Geochimica et Cosmochimica Acta, 74, 2915-2925. Link

25. Kim, D., Duckworth, O.W., and Strathmann, T.J. (2010) Reactions of aqueous iron-DFOB (desferrioxamine B) complexes with flavin mononucleotide in the absence of strong iron(II) chelators, Geochimica et Cosmochimica Acta, 74, 1513-1529. Link

24. Smits, M.M., Herrmann, A. M., Duane, M., Duckworth, O.W., Bonneville, S., Benning, L., and Lundström, U. (2009) The fungal-mineral interface: Challenges and considerations of micro-analytical developments, Fungal Biology Reviews, 23, 122-131. Link

23. Duckworth, O.W., Bargar, J.R., and Sposito, G. (2009) Coupled Biogeochemical Cycling of Iron and Manganese as Mediated by Microbial Siderophores, BioMetals, 22, 605-613. Link

22. Duckworth, O.W., Bargar, J.R., Jarzecki, A.A., Oyerinde, O., Spiro, T.G., and Sposito, G. (2009) The Exceptionally Stable Cobalt(III)- Desferrioxamine B Complex, Marine Chemistry, 113, 114-122. Link

21. Duckworth, O.W., Holmström, S.J.M., Peña, J., and Sposito, G. (2009) Biogeochemistry of Iron Oxidation in a Circumneutral Freshwater Habitat, Chemical Geology, 260, 149-158. Link

20. Kim, D., Duckworth, O.W., and Strathmann, T.J. (2009) Hydroxamate Siderophore-Promoted Reduction of Nitroaromatic Contaminants by Iron(II), Geochimica et Cosmochimica Acta, 73, 1297-1311. Link

19. Duckworth, O.W., Bargar, J.R., and Sposito, G. (2009) Quantitative-Structure Activity Relationships for Aqueous Metal-Siderophore Complexes, Environmental Science and Technology, 43, 343-349. Link

18. Duckworth, O.W., Bargar, J.R., and Sposito, G. (2008) Sorption of Ferric Iron from Ferrioxamine B to Synthetic and Biogenic Layer Type Manganese Oxides, Geochimica et Cosmochimica Acta, 72, 3371-3380. Link
See the write-up as a SSRL Science Highlight!

17. Peña, J., Duckworth, O.W., Bargar, J.R., and Sposito, G. (2007) Dissolution of Hausmannite in the Presence of the Trihydroxamate Siderophore Desferrioxamine B, Geochimica et Cosmochimica Acta, 71, 5661-5671. Link

16. Duckworth, O.W., and Sposito, G. (2007) Siderophore-Promoted Dissolution of Synthetic and Biogenic Layer Type Mn Oxides, Chemical Geology, 242, 202-213. Link

15. Duckworth, O.W., and Sposito, G. (2005) Siderophore-Manganese(III) Interactions I. Air-Oxidation of Manganese(II) Promoted by Desferrioxamine B, Environmental Science and Technology, 39, 6037-6044. Link

14. Duckworth, O.W., and Sposito, G. (2005) Siderophore-Manganese(III) Interactions II. Manganite Dissolution Promoted by Desferrioxamine B, Environmental Science and Technology, 39, 6045-6051. Link

13. Perry, T.D., Duckworth, O.W., Kendall, T.K., Martin, S.T., and Mitchell, R. (2005) Chelating ligand Alters the Microscopic Mechanism of Mineral Dissolution, Journal of the American Chemical Society, 127, 5744-5745. Link

12. Perry, T.D., Duckworth, O.W., McNamara, C.J., Martin, S.T., and Mitchell, R. (2004) The Effects of the Biologically Produced Polymer Alginic Acid on Macroscopic and Microscopic Calcite Dissolution Rates, Environmental Science and Technology, 38, 3040-3046. Link
See the write-up in C&E News!

11. Duckworth, O.W., Cygan, R.T., and Martin, S.T. (2004) Linear Free Energy Relationships between Dissolution Rates and Molecular Modeling Energies of Rhombohedral Carbonates. Langmuir, 20, 2938-2946. Link

10. Duckworth, O.W., and Martin, S.T. (2004) Dissolution Rates and Pit Morphologies of Rhombohedral Carbonate Minerals. American Mineralogist, 89, 554-563. Link

9. Duckworth, O.W., and Martin, S.T. (2004) Role of Molecular Oxygen in the Dissolution of Siderite and Rhodochrosite. Geochimica et Cosmochimica Acta, 68, 607-621. Link

8. Duckworth, O.W., and Martin, S.T. (2003) Connections between Surface Complexation and Geometric Models of Mineral Dissolution Investigated for Rhodochrosite. Geochimica et Cosmochimica Acta, 67, 1787-1801. Link

7. Duckworth, O.W., and Martin, S.T. (2001) Surface Complexation and Dissolution of Hematite by C1-C6 Dicarboxylic Acids at pH = 5.0. Geochimica et Cosmochimica Acta, 65, 4289-4301. Link

6. Martin, S.T., Schlenker, J.C., Chelf, J.H., and Duckworth, O.W. (2001) Structure-Activity Relationships of Mineral Dusts as Heterogeneous Nuclei for Ammonium Sulfate Crystallization from Supersaturated Aqueous Solutions. Environmental Science and Technology, 35, 1624-1629. Link

Educational Publications

5. Duckworth, O.W., Grunden, A.M., Ojiambo, P., Andrews, M.Y., and Cubeta, M.A. (2017) Revisiting Graduate Student Training to Address Agricultural and Environmental Societal Challenges. Agricultural and Environmental Letters, 2:170019. Link

4. Duckworth, O.W., Franzluebbers, A.J., and Gardner, T.G. (2015) Biogeochemical Processes Underpin Ecosystem Services in Soil Ecosystem Services, Stromberger, M.E., Lindbo, DL., Comerford, N.B. (eds.), in press. Link

3. Duckworth, O.W., Heitman, J.L., and Polizzotto, M.L. (2014) Soil water: From molecular structure to behavior, Nature Education Knowledge, 5 (8), 1. Link

2. Harrington, J.M., Gardner, T.G., Amoozegar, A., Andrews M.Y., Rivera, N.A., and Duckworth, O.W. (2013) A workshop to facilitate the development of learning modules for 6-12 grade science classes based on biogeochemical research, Natural Sciences Education, 42, 75-84. Link
See the write up in CSA News!

1. Duckworth, O.W. and Harrington, J.M. (2012) Student Presentations of Case Studies to Illustrate Core Concepts in Soil Biogeochemistry, Journal of Natural Resources and Life Sciences Education, 41, 35-43. Link
See the write up in CSA News!


Soil and Environmental Biogeochemistry (SSC 442), each Spring Semester

Current Topics in Soil Science (SSC 620), Spring 2014

Soil Chemistry (SSC 521), Spring 2008

Professional Service and Activities

RTI International faculty Scholar, 2016

Chair of the Soil Chemistry Division of the Soil Science Society of America, 2017

Associate Editor for Geochimica et Cosmochimica Acta andReview Editorial Board Member of Frontiers in Soil Processes

National Club Poster Presentation Contest Committee and as a Soil Chemistry Student Presentation Contest Judge for the Soil Science Society of America

Chaired the Soil Science Society of America Soils and Environmental Quality (S-11) Student Awards Committee, 2012

Severed on proposal review panels for two national funding agencies and twonational user facility

Served as a reviewer for three federal funding agencies (including four NSF programs), three private foundations, a state funding agency, two national user facilities, 28 peer-reviewed journals, and a book chapter

Co-organized six symposia at national or international conferences

Member of the American Chemical Society, American Geophysical Union, Geochemcial Society, and Soil Science Society of America