Articles | Volume 17, issue 3
https://doi.org/10.5194/bg-17-683-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-683-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Feb 2020
Research article |
| 10 Feb 2020
| 10 Feb 2020
High-pH and anoxic conditions during soil organic matter extraction increases its electron-exchange capacity and ability to stimulate microbial Fe(III) reduction by electron shuttling
Yuge Bai
Geomicrobiology, Center of Applied Geosciences, University of
Tübingen, Tübingen, 72074, Germany
Edisson Subdiaga
Environmental Mineralogy and Chemistry, Center of Applied Geosciences,
University of Tübingen, Tübingen, 72074, Germany
Stefan B. Haderlein
Environmental Mineralogy and Chemistry, Center of Applied Geosciences,
University of Tübingen, Tübingen, 72074, Germany
Heike Knicker
Instituto de Recursos Naturales y Agrobiología de Sevilla,
Consejo Superior de Investigaciones Científicas (IRNAS-CSIC), Seville,
41012, Spain
Andreas Kappler
CORRESPONDING AUTHOR
Geomicrobiology, Center of Applied Geosciences, University of
Tübingen, Tübingen, 72074, Germany
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Cited
28 citations as recorded by crossref.
- Macromolecular Characterization of Compound Selectivity for Oxidation and Oxidative Alterations of Dissolved Organic Matter by Manganese Oxide J. Zhang et al.
- Electron Hopping Enables Rapid Electron Transfer between Quinone-/Hydroquinone-Containing Organic Molecules in Microbial Iron(III) Mineral Reduction Y. Bai et al.
- Multiple Effects of Humic Components on Microbially Mediated Iron Redox Processes and Production of Hydroxyl Radicals R. Han et al.
- Coupled iron cycling and organic matter transformation across redox interfaces H. Dong et al.
- Prediction of As and Cd dissolution in various soils under flooding condition J. Ge et al.
- Diverse sedimentary organic matter within the river-aquifer interface drives arsenic mobility along the Meghna River Corridor in Bangladesh T. Varner et al.
- Bacterial tyrosinases as extracellular sources of quinone-based electron shuttles in soil F. Panis et al.
- The influence of humic acid on metal(loid)s leaching in landfill leachate for enhancing landfill mining H. Lee et al.
- Visible-Light Enhanced Catalytic Wet Peroxide Oxidation of Natural Organic Matter in the Presence of Al/Fe-Pillared Clay C. Portilla-Delgado et al.
- Cropping systems reshape the distribution and risks of microplastics in soil aggregates in a karst agricultural region F. Jiang et al.
- Reduced graphene oxide decorated with magnetite nanoparticles enhance biomethane enrichment I. Covarrubias-García et al.
- pH modifies the oxidative potential and peroxide content of biomass burning HULIS under dark aging C. Li et al.
- Ph Modifies the Oxidative Potential and Peroxide Content of Biomass Burning Hulis Under Dark Aging C. Li et al.
- Humic acids restrict the transformation and the stabilization of Cd by iron (hydr)oxides C. Qu et al.
- Iron reduction as a viable metabolic pathway in Enceladus’ ocean M. Roche et al.
- Is the traditional alkali extraction method valid in isolating chemically distinct humic acid? J. Zou et al.
- Long-term manure application enhances the stability of aggregates and aggregate-associated carbon by regulating soil physicochemical characteristics Y. Zhang et al.
- Variations and driving mechanism of dissolved arsenic in sediment porewater near wetland C. Yu et al.
- Fate of Organic Carbon Shaped by Iron Minerals in Coastal Wetlands: Mechanisms and Implications Y. Shao et al.
- Influence of cover crops on soil aggregate stability, size distribution and related factors in a no-till field W. Dai et al.
- Redox controls on anaerobic ammonium oxidation coupled to reduction of natural organic matter in paddy ecosystems S. Nie et al.
- Long-Term Warming Decreases Redox Capacity of Soil Organic Matter R. LaCroix et al.
- Promotion of Humic Acid Transformation by Abiotic and Biotic Fe Redox Cycling in Nontronite D. Hu et al.
- Enhancement of persulfate/Fe2+ oxidation process by water-extractable organic matter in sediment C. Kim et al.
- Soil Properties of Reclaimed Coastal Saline–Alkali Farmland in a Chinese Province: Spatial Variability and Soil Profiles Q. Sun et al.
- Stabilisation and destabilisation of coastal blue carbon: The key factors P. Macreadie et al.
- Identification of processes mobilizing organic molecules and arsenic in geothermal confined groundwater from Pliocene aquifers W. Qiao et al.
- Natural sediments activating peroxydisulfate for in situ degradation of antibiotics under anoxic conditions: The critical role of surface-adsorbed and structural Fe(II) W. Liao et al.
28 citations as recorded by crossref.
- Macromolecular Characterization of Compound Selectivity for Oxidation and Oxidative Alterations of Dissolved Organic Matter by Manganese Oxide J. Zhang et al.
- Electron Hopping Enables Rapid Electron Transfer between Quinone-/Hydroquinone-Containing Organic Molecules in Microbial Iron(III) Mineral Reduction Y. Bai et al.
- Multiple Effects of Humic Components on Microbially Mediated Iron Redox Processes and Production of Hydroxyl Radicals R. Han et al.
- Coupled iron cycling and organic matter transformation across redox interfaces H. Dong et al.
- Prediction of As and Cd dissolution in various soils under flooding condition J. Ge et al.
- Diverse sedimentary organic matter within the river-aquifer interface drives arsenic mobility along the Meghna River Corridor in Bangladesh T. Varner et al.
- Bacterial tyrosinases as extracellular sources of quinone-based electron shuttles in soil F. Panis et al.
- The influence of humic acid on metal(loid)s leaching in landfill leachate for enhancing landfill mining H. Lee et al.
- Visible-Light Enhanced Catalytic Wet Peroxide Oxidation of Natural Organic Matter in the Presence of Al/Fe-Pillared Clay C. Portilla-Delgado et al.
- Cropping systems reshape the distribution and risks of microplastics in soil aggregates in a karst agricultural region F. Jiang et al.
- Reduced graphene oxide decorated with magnetite nanoparticles enhance biomethane enrichment I. Covarrubias-García et al.
- pH modifies the oxidative potential and peroxide content of biomass burning HULIS under dark aging C. Li et al.
- Ph Modifies the Oxidative Potential and Peroxide Content of Biomass Burning Hulis Under Dark Aging C. Li et al.
- Humic acids restrict the transformation and the stabilization of Cd by iron (hydr)oxides C. Qu et al.
- Iron reduction as a viable metabolic pathway in Enceladus’ ocean M. Roche et al.
- Is the traditional alkali extraction method valid in isolating chemically distinct humic acid? J. Zou et al.
- Long-term manure application enhances the stability of aggregates and aggregate-associated carbon by regulating soil physicochemical characteristics Y. Zhang et al.
- Variations and driving mechanism of dissolved arsenic in sediment porewater near wetland C. Yu et al.
- Fate of Organic Carbon Shaped by Iron Minerals in Coastal Wetlands: Mechanisms and Implications Y. Shao et al.
- Influence of cover crops on soil aggregate stability, size distribution and related factors in a no-till field W. Dai et al.
- Redox controls on anaerobic ammonium oxidation coupled to reduction of natural organic matter in paddy ecosystems S. Nie et al.
- Long-Term Warming Decreases Redox Capacity of Soil Organic Matter R. LaCroix et al.
- Promotion of Humic Acid Transformation by Abiotic and Biotic Fe Redox Cycling in Nontronite D. Hu et al.
- Enhancement of persulfate/Fe2+ oxidation process by water-extractable organic matter in sediment C. Kim et al.
- Soil Properties of Reclaimed Coastal Saline–Alkali Farmland in a Chinese Province: Spatial Variability and Soil Profiles Q. Sun et al.
- Stabilisation and destabilisation of coastal blue carbon: The key factors P. Macreadie et al.
- Identification of processes mobilizing organic molecules and arsenic in geothermal confined groundwater from Pliocene aquifers W. Qiao et al.
- Natural sediments activating peroxydisulfate for in situ degradation of antibiotics under anoxic conditions: The critical role of surface-adsorbed and structural Fe(II) W. Liao et al.
Saved (final revised paper)
Latest update: 16 May 2026
Short summary
Biogeochemical processes of SOM are key for greenhouse gas emission and water quality. We extracted SOM by water or by NaOH–HCl under oxic–anoxic conditions. Chemical and anoxic extractions lead to higher SOM electron exchange capacities, resulting in stimulation of microbial Fe(III) reduction. Therefore, aqueous pH-neutral SOM extracts should be used to reflect environmental SOM redox processes, and artifacts of chemical extractions need to be considered when evaluating SOM redox processes.
Biogeochemical processes of SOM are key for greenhouse gas emission and water quality. We...
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