Scott Fendorf

CO-PI

Research Expertise/Experience

Extensive experience in metal biogeochemistry.  He has examined microbially mediated and geochemical process impacting the fate and transport of soil/sediment organic carbon, uranium, chromium, and arsenic, and iron.  His research spans molecular (nm) to field (km) scales, and examines the coupling of biological, chemical, and physical (hydrologic) processes influencing metal fate

Scott Fendorf Stanford Profile

SFA Related Publications/Presentations

Publications

Calendar Year 2021 Publications (including submitted manuscripts under review)

  1. Dewey, C.; Bargar, J.R.; Fendorf, S. (2021) Porewater lead concentrations limited by particulate organic matter coupled with ephemeral iron(III) and sulfide phases during redox cycles within contaminated floodplain soils. Environ. Sci. Techno. 55 (9) 5878-5886. DOI: 10.1021/acs.est.0c08162
  2. Engel, M.; Boye, K.; Noël, V.; Babey, T.; Bargar, J. R.; Fendorf, S. (2021) Simulated aquifer heterogeneity leads to enhanced attenuation and multiple retention processes of zinc. Environmental Science & Technology. 55 (5) 2939–2948. DOI: 10.1021/acs.est.0c06750
  3. Engel M.; Lezama Pacheco J.S.; Noël V.; Boye K.; Fendorf S. (2021) Organic compounds alter preference and rates of heavy metal adsorption on ferrihydrite. Science of the Total Environment. 750, 141485. DOI: 10.1016/j.scitotenv.2020.141485 

 

Calendar Year 2020 Publications (including submitted manuscripts under review)

  1. Bone, S. E.;  Cliff, J.;  Weaver, K.;  Takacs, C. J.;  Roycroft, S.;  Fendorf, S.; Bargar, J. R. (2020) Uranium complexation by organic matter and clay minerals in anoxic contaminated sediments. Environmental Science & Technology, 54 (3), 1493-1502. DOI: 10.1021/acs.est.9b04741
  2. Dewey, C.; Bargar, J.; Fendorf, S. (2020) Collective partitioning limits porewater lead concentrations during redox cycles in contaminated floodplain soils. Environmental Science & Technology.  In review
  3. Dewey, C.; Sokaras, D.; Kroll, T.; Bargar, J.R.; Fendorf S. (2020) Calcium-uranyl-carbonato species kinetically limit U(VI) reduction by Fe(II) and lead to U(V)-bearing ferrihydrite. Environ. Sci. Techno. 54 (10) 6021–6030. DOI: 10.1021/acs.est.9b05870
  4. Kumar, N.;  Noël, V.;  Planer-Friedrich, B.;  Besold, J.;  Lezama Pacheco, J.;  Bargar, J. R.;  Brown, J., G.;  Fendorf, S.; Boye, K. (2020) Redox heterogeneities promote thioarsenate formation and release into groundwater from low arsenic sediments. Environmental Science & Technology, 54 (6), 3237-3244. DOI: 10.1021/acs.est.9b06502

 

Calendar Year 2019 Publications

  1. Besold, J.;  Eberle, A.;  Noël, V.;  Kujala, K.;  Kumar, N.;  Scheinost, A. C.;  Pacheco, J. L.;  Fendorf, S. (2019) Planer-Friedrich, B., Antimonite binding to natural organic matter: spectroscopic evidence from a mine water impacted peatland. Environmental science & technology, 53 (18), 10792-10802. DOI: 10.1021/acs.est.9b03924
  2. Besold, J.; Kumar, N.; Scheinost, A. C.; Lezama-Pacheco, J. S.; Fendorf, S.; Planer-Friedrich, B. (2019) Antimonite complexation with thiol and carboxyl/phenol groups of peat organic matter. Environmental Science & Technology, 53 (9), 5005-5015. DOI: 10.1021/acs.est.9b00495 
  3. Duan, Y.; Schaefer, M. V.; Wang, Y.; Gan, Y.; Yu, K.; Deng, Y.; Fendorf, S. (2019) Experimental constrains on redox-induced arsenic release and retention from aquifer sediments in the central Yangtze River Basin. The Science of the Total Environment, 649, 629-639.  DOI: 10.1016/j.scitotenv.2018.08.205 

 

Calendar Year 2018 Publications

  1. Boye, K.;  Herrmann, A. M.;  Schaefer, M. V.;  Tfaily, M. M.; Fendorf, S. (2018) Discerning Microbially Mediated Processes During Redox Transitions in Flooded Soils Using Carbon and Energy Balances. Front Environ Sci, 6, 15. DOI: 10.3389/fenvs.2018.00015

 

Calendar Year 2017 Publications

  1. Bone, S. E.;  Cahill, M. R.;  Jones, M. E.;  Fendorf, S.;  Davis, J.;  Williams, K. H.; Bargar, J. R. (2017) Oxidative Uranium Release from Anoxic Sediments under Diffusion-Limited Conditions. Environmental Science & Technology, 51 (19), 11039-11047. DOI: 10.1021/acs.est.7b02241
  2. Boye, K.; Lezama Pacheco, J. S.; Fendorf, S. (2017) Relevance of Reactive Fe:S Ratios for Sulfur Impacts on Arsenic Uptake by Rice. Soils, 1 (1), 1. DOI: 10.3390/soils1010001
  3. Boye, K.; Noël, V.; Tfaily, M.; Bone, S.; Williams, K.; Bargar, J.; Fendorf, S. (2017) Thermodynamically controlled preservation of organic carbon in floodplains. Nature Geoscience, 10, 415–419. DOI: 10.1038/ngeo2940
  4. Dublet, G.;  Lezama Pacheco, J.;  Bargar, J. R.;  Fendorf, S.;  Kumar, N.;  Lowry, G. V.; Brown, G. E. (2017) Partitioning of uranyl between ferrihydrite and humic substances at acidic and circum-neutral ph. Geochim. Cosmochim. Acta, 215, 122. DOI: 10.1016/j.gca.2017.07.013
  5. Hausladen, D. M.; Fendorf, S., (2017) Hexavalent Chromium Generation within Naturally Structured Soils and Sediments. Environmental Science & Technology, 51 (4), 2058-2067. DOI: 10.1021/acs.est.6b04039
  6. Keiluweit, M.; Wanzek, T.; Kleber, M.; Nico, P.; Fendorf, S. (2017) Anaerobic microsites have an unaccounted role in soil carbon stabilization. Nature Communications, 8, 1771. DOI: 10.1038/s41467-017-01406-6 
  7. Noël, V.;  Boye, K.;  Kukkadapu, R. K.;  Bone, S.;  Pacheco, J. S. L.;  Cardarelli, E.;  Janot, N.;  Fendorf, S.;  Williams, K. H.; Bargar, J. R., (2017) Understanding controls on redox processes in floodplain sediments of the Upper Colorado River Basin. Sci Total Environ, 603, 663-675. DOI: 10.1016/j.scitotenv.2017.01.109

Presentations

Calendar Year 2021 Presentations

  1. Bargar J.R.,; Bone S.E.; Dewey C.; Noël V.; Fendorf S. (2021) Radionuclide and heavy metal complexation on complex natural sorbents. Presented at the American Chemical Society (ACS) Virtual Spring Meeting. April 5-16.  [Invited talk]
  2. Engel M.; Boye K.; Noël V.; Babey T.; Bargar J.R.; Fendorf S. (2021) How spatial and compositional heterogeneities influence zinc retention in a simulated aquifer. Presented at the Goldschmidt Virtual Conference. July 4-9.  [Talk]

 

Calendar Year 2020 Presentations

  1. Bone, S.E.; Govind, N.; Andersen, A.; Cliff, J.; Weaver, K.; Roycroft, S.; Fendorf, S.; Takacs, C.J.; Bargar, J.R. (2020) Calcium complexation by organic matter in calcareous sediments. Presented at the American Geophysical Union (AGU) Fall Meeting - Virtual, San Francisco, CA. December 1-17. [Invited]
  2. Bone, S.E., Cliff, J.; Andersen, A.; Govind, N.; Takacs, C.J.; Roycroft, S.; Weaver, K.; Fendorf, S.; Bargar, J.R. (2020) Probing metal‐organic matter complexation in sediments using chemical imaging. Presented at the Advanced Light Source User Meeting, August 25-28 [Invited]
  3. Bone, S.E.; Cliff, J.; Weaver, K.; Roycroft, S.; Fendorf, S.; Takacs, C.J.; Bargar, J.R. (2020) Calcium complexation by organic matter in calcareous sediments. Presented at the Goldschmidt Virtual Conference, June 21-26. [Talk]
  4. Boye K.; Babey T.; Kumar N.; Noël V.; Perzan Z.; Engel, M.; Tolar, B.; Bargar J. R.; Fendorf, S. (2020) Redox interfaces produce halos of altered biogeochemical reactivity in alluvial groundwater sediments. Presented at the Goldschmidt Virtual Conference, June 21-26. [Talk]
  5. Engel, M.; Boye, K.; Noël, V.; Bargar, J. R.; Fendorf, S. (2020) Biogeochemical variability controls heavy metal mobility within alluvial aquifers. Presented at the Goldschmidt Virtual Conference, June 21-26. [Talk].
  6. Bargar, J. R.; Noel, V.; Bone, S.; Boye, K.; Fendorf, S.; Babey, T.; Maher, K. (2020) Influence of environmental interfaces on molecular processes controlling uranium behavior. Presented at the ACS 2020 National Spring Meeting, Philadelphia, PA, March 23. [Talk]  
  7. Fendorf, S. (2020) Sustaining groundwater and food quality in the twenty-first century.  Presented at the Donald L. Sparks Distinguished Lectureship in Soil and Environmental Sciences, University of Delaware. YouTube link: https://www.youtube.com/watch?v=uZfCrlad3os Feb 18. [Invited]
  8. Bone, S.E., Cliff, J.; Takacs, C.J.; Roycroft, S.; Weaver, K.; Fendorf, S.; Bargar, J.R. (2020) Molecular insights into interfacial chemistry in natural and engineered systems. Presented at Stanford University, Civil and Environmental Engineering. Feb 10. [Invited]
  9. Fendorf, S. (2020) Sustaining groundwater quality in the 21st century. Presented at the Environmental Science Departmental Lectureship.  University of California, Riverside. Jan 17. [Invited]

 

Calendar Year 2019 Presentations

  1. Fendorf, S., Lopez, A. M., Wells, A. A., Sherris,A., Fakhreddine S. (2019) Assessing and mitigating triggers releasing geogenic contaminants to groundwater. Presented at the American Geophysical Union Fall Meeting, San Francisco, CA. December 9-13. [Invited]
  2. Engel, M.; Boye, K.; Fendorf, S. (2019) Heavy metal mobility in a model aquifer exhibiting redox heterogeneities. Presented at AGU Fall Meeting, San Francisco, CA, Dec 9-13. [Invited].
  3. Pierce, S.W.; Bargar, J.R.; Dewey, C.; Maher, K.; Fendorf, S.; Manning, A.H.; Carroll, R.; and Williams, K.H. (2019) H-BGC reactivity of riparian-aquifer interfaces along Slate River. Presented at the LBNL Watershed Function SFA project retreat, Bodega Bay, CA, Nov 14-15. [Contributed poster]
  4. Bone, S.E., Cliff, J.; Jones, M.A.; Cahill, M.; Roycroft, S.; Weaver, K.; Fendorf, S.; Davis, J.; Williams, K.; Boye, K.; Noel, V.; Takacs, C.; Bargar, J.R. (2019) Influences of Organic Matter on Uranium Retention and Mobilization in Contaminated Aquifers. Presented at the University of Lausanne, Institute of Earth Surface Dynamics. Lausanne, Switzerland, Oct 2, 2019 [Invited]
  5. Boye, K.;  Kumar, N.;  Noel, V.;  Spielman, L. E.;  Barragan, L.;  Planer-Friedrich, B.;  Besold, J.;  Bargar, J. R.; Fendorf, S. (2019). Influence of redox interfaces on metal(loid) contaminant mobility in shallow alluvial groundwater aquifers. Presented at ACS National Fall Meeting, San Diego, CA, Aug 25-29. [Talk]
  6. Bargar, J.R.; Roycroft, S.; Boye, K.; Perzan, Z.; Johnson, R.; Dam, W.; Noel, V.; Fendorf, S. (2019) Uranium mobilization across saturated-unsaturated interfaces. Presented at Goldschmidt Geochemistry Conference, Symposium 04l: Session Honoring Professor Georges Calas. Barcelona, Spain, Aug 19. [Talk]
  7. Kumar, N.;  Boye, K.;  Noël, V.;  Planer- Friedrich, B.;  Bargar, J. R.;  Brown, G. E. J.; Fendorf, S. (2019) Influence of redox interfaces on Arsenic mobility. Presented at Goldschmidt Conference, Barcelona, Spain, Aug 18-23. [Poster].
  8. Fendorf, S. (2019) From As to U—Central and complex controls of Fe and Mn on contaminant cycling. Presented at the Goldschmidt Conference Barcelona, Spain, Aug 18-23. [Invited]
  9. Boye, K., Kumar, N., Noël, V., Dewey, C. W., Tolar, B. B., Brown, G. E., Francis, C.A., Bargar, J. R. and Fendorf, S. (2019). SLAC Groundwater Quality SFA: Impact of reduced zones and hydrological-biogeochemical coupling on solute transport and groundwater quality. Presented at the Environmental System Science (ESS) PI Meeting, Potomac, MD. Apr 30-May 1. [Poster]
  10. Boye, K., Noël, V., Kumar, N., Bargar, J., Fendorf, S. (2019) Understanding metal(loid) contaminant threats to shallow groundwater resources. Presented at the American Indian Science and Engineering Society, Region 2 meeting, Stanford, CA. Apr 6. [Invited]
  11. Bargar, J.R., Roycroft, S.R., Boye, K., Johnson, R., Noel, V., Perzan, Z., and Fendorf, S. (2019) Hydrological-geochemical controls over uranium mobility in unsaturated zone sediments. Presented at the 2019 Spring National Meeting of the American Chemical Society, Orlando, FL, April 2. [Invited]
  12. Fendorf, S. (2019) A growing threat to global water resources and food security. Presented at the University of Michigan, Earth and Planetary Science Lecture Series. Mar 29. [Invited]
  13. Boye, K., Noël, V., Kumar, N., Bargar, J., Fendorf, S. (2019) How X-rays are helping us understand groundwater contaminant behavior. Presented at the SSRL monthly lunch seminar series, Menlo Park, CA. Mar 21. [Invited]
  14. Boye, K., Kumar, N., Noël, V., Bargar, J. R. and Fendorf, S. (2019). The power of reduction and its influence on arsenic and uranium mobility. Presented at the Soil Science Society of America International Soils Meeting, San Diego, CA. Jan 6-9. [Poster]
  15. Fendorf, S. (2019) Soils as open-system, integrated processors:  Central controls on atmospheric and water composition. Presented at the Soil Science Society of America International Soils Meeting, San Diego, CA. Jan 6-9. [Invited]

 

Calendar Year 2018 Presentations

  1. Bone, S.E., Cliff, J.; Jones, M.A.; Cahill, M.; Roycroft, S.; Fendorf, S.; Davis, J.; Williams, K.; Boye, K.; Noel, V.; Bargar, J.R. (2018) Integrating imaging techniques for elucidating coupled nutrient and contaminant biogeochemical cycles. SSRL User Meeting. Sep. 25-28. [Invited]
  2. Kumar, N., Noël, V., Boye, K., Besold, J., Planer-Friedrich, B., Fendorf, S. and Brown, G. (2018). Behavior of As(III) and As(V) during Ferrihydrite Sulfidation. Presented at the Goldschmidt Conference, Boston, MA. Aug 12-17. [Talk]
  3. Boye, K., Herrmann, A. M., Bobb, C., Tolar, B., Noël, V., Bargar, J. R., Maher, K and Fendorf, S. (2018). Microbial energetics, carbon, and the progression of redox reactions in flooded soils. Presented at the Goldschmidt, Boston, MA. Aug 12-17. [Poster]
  4. Bone, S.E., Cliff, J.; Jones, M.A.; Cahill, M.; Roycroft, S.; Fendorf, S.; Davis, J.; Williams, K.; Boye, K.; Noel, V.; Bargar, J.R. (2018) Influences of Organic Matter on Uranium Retention and Mobilization in Contaminated Aquifers. Presented at the Goldschmidt Conference, Boston, MA. Aug 12-17 [Keynote]
  5. Bone, S.E., Cliff, J.; Jones, M.A.; Cahill, M.; Roycroft, S.; Fendorf, S.; Davis, J.; Williams, K.; Boye, K.; Noel, V.; Bargar, J.R. (2018) Impact of organic matter type on uranium complexation in anoxic contaminated sediments: a combined NanoSIMS and x-ray spectromicroscopy study. EMSL Integration Meeting. Richland, WA. August 6-8 [Invited]
  6.  Boye, K., Herrmann, A. M., Tfaily, M. M., Schaefer, M., Noël, V., Bargar, J. and Fendorf, S. (2018). Carbon in transit – implications of microbial energetics for carbon and contaminant fate in transitory systems. Presented at the Organic Geochemistry Gordon Research Conference, Holderness, NH. Jul 29-Aug 3. [Invited]
  7. Bargar, J. R., Noël, V., Boye, K., Bobb, C., Cardarelli, E., Fendorf, S., Maher, K. and Francis, C. A. (2018). Multi-technique synchrotron investigations of metal and radionuclide behavior in complex biogeochemical systems. Presented at the National Meeting of the Swedish Chemical Society, Satellite meeting on The Future of Chemistry with MAX IV and ESS, Lund, Sweden. Jun 20. [Keynote]
  8. Bargar, J. R., Noël, V., Boye, K., Bobb, C., Cardarelli, E., Kukkadapu, R., Fendorf, S., Maher, K. and Francis, C. A. (2018). Iron-sulfur redox cycling and contaminant mobility in the upper Colorado River Basin. Presented at the Clay Minerals Society 55th Annual Meeting, Urbana-Champaign, IL. Jun 11. [Invited]
  9. Dewey, C., Bargar, J. R. and Fendorf, S. (2018). Impacts of Ca on U(VI) reduction. Presented at the Pacific Northwest National Laboratory, Richland, WA. May 8. [Invited]
  10. Roycroft, S., Noël, V., Bargar, J. R., Boye, K., Fendorf, S., Francis, C. A. and Maher, K. (2018). SLAC-SFA: Groundwater Quality SFA, Hydrologically driven biogeochemical processes controlling groundwater quality. Presented at the 2019 Environmental System Science (ESS) PI Meeting, Potomac, MD. May 1-2. [Poster]
  11. Boye, K., Tfaily, M. M., Noël, V., Schaefer, M., Herrmann, A. M., Bargar, J. R. and Fendorf, S. (2018). Implications of microbial energetics for carbon fate in floodplain soils and groundwater. Presented at the US DOE ESS Annual PI Meeting, Potomac, MD. May 1-2. [Invited]
  12. Fendorf, S. (2018). The unforeseen metabolic constraint on soil carbon mineralization. Presented at the Harwood Lecturer, Oregon State University, Corvallis, OR. April 10. [Invited]
  13. Fendorf, S. (2018). Sustaining Groundwater Quality in the 21st Century: Soil Processes as Solutions and Threats. Presented at the Harwood Lecturer, Oregon State University, Corvallis, OR. April 8. [Invited]
  14. Bargar, J. R., Roycroft, S., Noël, V., Boye, K., Johnson, R., Dam, W. L. and Fendorf, S. (2018). Vertical transport of uranium in the unsaturated zone: A likely plume persistence mechanism. Presented at the ACS National Meeting & Exposition, New Orleans, LA. Mar 19-21. [Talk]
  15. Roycroft, S., Noël, V., Boye, K., Johnson, R. H., Dam, W. L., Fendorf, S. E., and Bargar, J. R. (2018). Vertical transport of Uranium in the unsaturated zone: a likely plume persistence mechanisms. Presented at the American Chemical Society, New Orleans, LA. Mar 18-22. [Talk]
  16. Boye, K., Müehe, M. and Fendorf, S. (2018). Current and future challenges to rice production. Presented at the Sustainable Intensification of Agriculture Workshop, Uppsala, Sweden. Jan 30-31. [Invited]

 

Calendar Year 2017 Presentations

  1. Noël, V., Boye, K., Bone, S. E., Kukkadapu, R., Dynes, J., Lezama-Pacheco, J. S., Cardarelli, E. L., Williams, K. H., Fendorf, S. and Bargar, J. R. (2017). Redox constraints on shallow alluvial sediments: Implications for U mobility. Presented at the 2017 Environmental System Science (ESS) PI Meeting, Potomac, MD. Apr 25-26. [Poster]
  2. Müller, A. L., Fendorf, S., Francis, C. A., Bargar, J. R. and Spormann, A. M. (2017). Spatial constraints on microbial metabolic activity in anaerobic environments. Presented at the 2017 Environmental System Science (ESS) PI Meeting, Potomac, MD. Apr 25-26. [Poster]
  3. Noël, V., Boye, K., Kukkadapu, R., Lezama-Pacheco, J., Fendorf, S., Roycroft, S. J.and Bargar, J. (2017). Fe and S Speciation to Track Redox Constraints on Shallow Alluvial Sediments: Implications for U Storage and Stability. Presented at the Goldschmidt Conference, Paris, France. August 18. [Oral]
  4. Boye, K., Tfaily, M. M., Herrmann, A. M., Noël, V., Bargar, J. and Fendorf, S. (2017). Carbon in transit – implications of microbial energetics for carbon and contaminant fate in transitory systems. Presented at the SSSA Annual Meeting, Tampa, FL. Oct 22-25. [Invited]
  5. Boye, K., Tfaily, M.M., Herrmann, A. M., Noël, V., Bargar, J.R., Fendorf, S. (2017). Carbon in transit – implications of microbial energetics for carbon and contaminant fate in transitory systems. Presented at Goldschmidt, Paris, France. Aug 13-18. [Poster]
  6. Boye, K., Noël, V., Bobb, C., Cardarelli, E.L., Dam, W.L., Johnson, R.H., Kukkadapu, R., Tfaily, M., Pasa-Tolic, L., Fendorf, S., Francis, C.A., Maher, K. and Bargar, J.R. (2017). Hydrologically driven process coupling between biogeochemical cycles and solute transport in transiently saturated sediments at the Riverton site (WY). Presented at the 2017 Environmental System Science (ESS) PI Meeting, Potomac, MD. Apr 25-26. [Poster]
  7. Müller, A.L., Fendorf, S., Francis, C.A., Bargar, J.R. and Spormann, A.M. (2017). Spatial constraints on microbial metabolic activity in anaerobic environments. Presented at the 2017 Environmental System Science (ESS) PI Meeting, Potomac, MD. Apr 25-26. [Poster]
  8. Noël, V., Boye, K., Bone, S. E., Kukkadapu, R., Dynes, J., Lezama-Pacheco, J.S., Cardarelli, E.L., Williams, K.H., Fendorf, S. and Bargar, J.R. (2017). Redox constraints on shallow alluvial sediments: Implications for U mobility. Presented at the 2017 Environmental System Science (ESS) PI Meeting, Potomac, MD. Apr 25-26. [Poster]