4.8 Article

Coupling of Dissolved Organic Matter Molecular Fractionation with Iron and Sulfur Transformations during Sulfidation-Reoxidation Cycling

Related references

Note: Only part of the references are listed.
Article Engineering, Chemical

Mechanistic insight into manganese oxidation induced by sulfite under aerobic condition: Implication of triclosan degradation

Chang Ge et al.

Summary: This study investigated the oxidation mechanisms of manganese and the degradation of triclosan in a mixture solution with Mn(II) and sulfite under aerobic conditions. It was found that 75% removal of triclosan was achieved in the Mn(II)/sulfite system, and the conversion efficiency was positively related to the concentrations of Mn(II). The formation of manganese oxide was responsible for the degradation of triclosan, and it was proven to be the major reactive oxidant.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

Article Engineering, Environmental

Transformations of Ferrihydrite-Extracellular Polymeric Substance Coprecipitates Driven by Dissolved Sulfide: Interrelated Effects of Carbon and Sulfur Loadings

Qihuang Wang et al.

Summary: This study investigated the influence of the association of poorly crystalline iron (hydr)-oxides with organic matter (OM) on iron and carbon cycles in soils and sediments, as well as their behaviors under sulfate-reducing conditions. The results showed that the effect of added OM on sulfidation of ferrihydrite-organic matter (Fh-OM) coprecipitates is dependent on the amount of loaded sulfide. The presence of OM inhibited mineral transformation, with microbiogenic EPS having a stronger inhibitory effect compared to synthetic EPS proxies.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2023)

Article Soil Science

Redox-driven changes in organic C stabilization and Fe mineral transformations in temperate hydromorphic soils

Beatrice Giannetta et al.

Summary: Paddy soils undergo long-term redox alternations affecting the interaction between iron (Fe) and carbon (C) biogeochemical cycling. Different particle aggregation and soil organic matter (SOM) turnover could be influenced by the trajectory of Fe mineral evolution/crystallinity with redox fluctuations. Our study found that paddy topsoils, although depleted in hydrous Fe oxides, can stabilize significant amounts of carbon through mineral associations, especially with finer particle-size fractions containing less crystalline Fe phases. Moreover, redox cycling can impact microaggregate stability and the distribution of Fe phases and organic carbon between intra and inter-microaggregate fractions. Illuvial horizons under paddy management were enriched in short-range ordered hydrous Fe oxides, leading to enhanced microaggregate formation and carbon stabilization compared to non-paddy subsoils.

GEODERMA (2022)

Article Geochemistry & Geophysics

Stability and molecular fractionation of ferrihydrite-bound organic carbon during iron reduction by dissolved sulfide

Wei-Wei Ma et al.

Summary: The interactions between organic carbon and ferric iron oxides are crucial for the stabilization of organic carbon, but the reduction of iron(III) oxides under anoxic conditions may compromise the stability of iron-bound organic carbon. This study found that metastable iron sulfide can effectively sequester organic carbon, while the reduction of ferrihydrite is affected by the pre-adsorption and pre-coprecipitation of organic carbon.

CHEMICAL GEOLOGY (2022)

Article Soil Science

Molecular orbital study of Fe(II) and Fe(III) complexation with salicylate and citrate ligands: Implications for soil biogeochemistry

Tsutomu Ohno et al.

Summary: Formation of mineral-associated organic matter contributes to soil carbon storage, but changing climate may destabilize minerals. Using model soil ligands, this study examines the chemical bonds formed between Fe cations and organic acids, providing insights into the biogeochemical cycling of soil Fe and C.

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL (2022)

Article Geochemistry & Geophysics

The role and fate of organic carbon during aging of ferrihydrite

Yao Zhao et al.

Summary: This study investigates the impact of organic carbon (OC) binding strength on the aging of ferrihydrite and the fate of associated OC. It is found that OC substantially retards the aging process and that OC with higher binding strength becomes more stable with the solid phase during aging. The results provide insights into the mechanisms behind OC persistence with minerals and its long-term preservation in natural environments.

GEOCHIMICA ET COSMOCHIMICA ACTA (2022)

Article Engineering, Environmental

Effect of C/Fe Molar Ratio on H2O2 and OH Production during Oxygenation of Fe(II)-Humic Acid Coexisting Systems

Yanting Zhang et al.

Summary: This study reveals the significant influence of the C/Fe molar ratio on the production of hydrogen peroxide and hydroxyl radical during the oxygenation of reduced iron and natural organic matter in the subsurface. The accumulation of hydroxyl radical increases more prominently with the increase in the C/Fe ratio.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Engineering, Environmental

Coexisting Goethite Promotes Fe(II)-Catalyzed Transformation of Ferrihydrite to Goethite

Luiza Notini et al.

Summary: In redox-affected soil environments, the coexistence of goethite and ferrihydrite strongly influences the transformation of ferrihydrite, with more goethite leading to more transformation into goethite.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Soil Science

Evaluating wetland soil carbon stability related to iron transformation during redox oscillations

Yiyun Wang et al.

Summary: This study found that the addition of ferrous iron (Fe(II)) has the potential to stabilize soil organic carbon (SOC) in wetlands. Under cyclic redox conditions, the response of Fe(II) was positively correlated with phenol oxidative activity and cumulative CO2 emissions. Fe(II) addition increased Fe-bound SOC through the production of short-range-ordered Fe(III) (oxyhydr)oxides. Additionally, Fe(II) addition decreased CO2 emissions in soils with pH > 6 but increased CO2 emissions in a Sphagnum-dominated soil.

GEODERMA (2022)

Article Engineering, Environmental

Photochemical characterization of paddy water during rice cultivation: Formation of reactive intermediates for As(III) oxidation

Yu Zeng et al.

Summary: This study investigated the photochemical processes in paddy water, identifying DOM-D-3*, O-1(2), and OH· as the main reactive intermediates with quantified quantum yields and steady-state concentrations. The findings demonstrated that DOM properties and nitrite concentration were key factors influencing RIs generation, and RIs significantly enhanced arsenite oxidation in paddy water. The study provides new insights into arsenite abiotic transformation pathways in paddy soil and water.

WATER RESEARCH (2021)

Article Engineering, Environmental

Ligand-Enhanced Electron Utilization for Trichloroethylene Degradation by •OH during Sediment Oxygenation

Wenjing Xie et al.

Summary: Specific ligands can greatly enhance contaminant degradation during sediment oxygenation by increasing the utilization efficiency of sediment electrons. The electron utilization efficiency for (OH)-O-center dot production increases with higher ligand concentrations, and is mainly enhanced by changes in sediment surface Fe(II) coordination for low adsorption affinity ligands, and by electron transfer from sediment to dissolved Fe(III)-ligand for high adsorption affinity ligands.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Article Multidisciplinary Sciences

Sulfurization of dissolved organic matter in the anoxic water column of the Black Sea

Gonzalo V. Gomez-Saez et al.

Summary: Dissolved organic carbon in today's oceans is an important component of the global carbon cycle, with anoxic marine environments possibly contributing to its preservation through reactions with sulfur species. Studies show that in the sulfidic waters of the Black Sea, dissolved organic sulfur is largely formed within the water column, indicating potential long-lasting effects on global climate.

SCIENCE ADVANCES (2021)

Article Geochemistry & Geophysics

Labile Fe(III) from sorbed Fe(II) oxidation is the key intermediate in Fe(II)-catalyzed ferrihydrite transformation

Anxu Sheng et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2020)

Article Multidisciplinary Sciences

Iron-mediated organic matter decomposition in humid soils can counteract protection

Chunmei Chen et al.

NATURE COMMUNICATIONS (2020)

Article Geochemistry & Geophysics

Antimony mobility in sulfidic systems: Coupling with sulfide-induced iron oxide transformations

Kerstin Hockmann et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2020)

Article Chemistry, Multidisciplinary

Organic matter influences transformation products of ferrihydrite exposed to sulfide

Laurel K. ThomasArrigo et al.

ENVIRONMENTAL SCIENCE-NANO (2020)

Article Engineering, Environmental

Ferrous Iron Oxidation under Varying pO2 Levels: The Effect of Fe(III)/Al(III) Oxide Minerals and Organic Matter

Chunmei Chen et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

Article Engineering, Environmental

Influence of pO2 on Iron Redox Cycling and Anaerobic Organic Carbon Mineralization in a Humid Tropical Forest Soil

Chunmei Chen et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

Article Engineering, Environmental

Adsorption and Molecular Fractionation of Dissolved Organic Matter on Iron-Bearing Mineral Matrices of Varying Crystallinity

Elizabeth K. Coward et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

Article Engineering, Environmental

Spatial Dependence of Reduced Sulfur in Everglades Dissolved Organic Matter Controlled by Sulfate Enrichment

Brett A. Poulin et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017)

Article Engineering, Environmental

Production of Abundant Hydroxyl Radicals from Oxygenation of Subsurface Sediments

Man Tong et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016)

Article Engineering, Environmental

Sulfidization of Organic Freshwater Flocs from a Minerotrophic Peatland: Speciation Changes of Iron, Sulfur, and Arsenic

Laurel K. ThomasArrigo et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016)

Article Engineering, Environmental

Oxidizing Impact Induced by Mackinawite (FeS) Nanoparticles at Oxic Conditions due to Production of Hydroxyl Radicals

Dong Cheng et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016)

Article Geochemistry & Geophysics

Rapid organic matter sulfurization in sinking particles from the Cariaco Basin water column

Morgan Reed Raven et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2016)

Article Engineering, Environmental

Electron Transfer Budgets and Kinetics of Abiotic Oxidation and Incorporation of Aqueous Sulfide by Dissolved Organic Matter

Zhi-Guo Yu et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2015)

Article Engineering, Environmental

Occurrence of Surface Polysulfides during the Interaction between Ferric (Hydr)Oxides and Aqueous Sulfide

Moli Wan et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2014)

Article Engineering, Environmental

Properties of Fe-Organic Matter Associations via Coprecipitation versus Adsorption

Chunmei Chen et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2014)

Article Engineering, Environmental

Effect of Solution and Solid-Phase Conditions on the Fe(II)-Accelerated Transformation of Ferrihydrite to Lepidocrocite and Goethite

Daniel D. Boland et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2014)

Article Geochemistry & Geophysics

Complexes with aquatic organic matter suppress hydrolysis and precipitation of Fe(III)

Torbjorn Karlsson et al.

CHEMICAL GEOLOGY (2012)

Article Engineering, Environmental

Hydroxyl Radical Formation upon Oxidation of Reduced Humic Acids by Oxygen in the Dark

Sarah E. Page et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2012)

Article Geochemistry & Geophysics

Heterogeneous oxidation of Fe(II) on iron oxides in aqueous systems: Identification and controls of Fe(III) product formation

Philip Larese-Casanova et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2012)

Article Multidisciplinary Sciences

Preservation of organic matter in sediments promoted by iron

Karine Lalonde et al.

NATURE (2012)

Article Geochemistry & Geophysics

Structural stability of coprecipitated natural organic matter and ferric iron under reducing conditions

Yumiko K. Henneberry et al.

ORGANIC GEOCHEMISTRY (2012)

Article Geochemistry & Geophysics

Iron in Earth Surface Systems: A Major Player in Chemical and Biological Processes

Kevin G. Taylor et al.

ELEMENTS (2011)

Article Geochemistry & Geophysics

Aerobic oxidation of mackinawite (FeS) and its environmental implication for arsenic mobilization

Hoon Y. Jeong et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2010)

Article Engineering, Environmental

Rates and Extent of Reduction of Fe(III) Compounds and O2 by Humic Substances

Iris Bauer et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2009)

Article Engineering, Environmental

Characterization of Ferrihydrite-Soil Organic Matter Coprecipitates by X-ray Diffraction and Mossbauer Spectroscopy

Karin Eusterhues et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2008)

Article Geochemistry & Geophysics

Oxidation and incorporation of hydrogen sulfide by dissolved organic matter

Tobias Heitmann et al.

CHEMICAL GEOLOGY (2006)

Article Geochemistry & Geophysics

High resolution transmission electron microscopic study of synthetic nanocrystalline mackinawite

H Ohfuji et al.

EARTH AND PLANETARY SCIENCE LETTERS (2006)

Article Chemistry, Multidisciplinary

Metal sulfide cluster complexes and their biogeochemical importance in the environment

GW Luther et al.

JOURNAL OF NANOPARTICLE RESEARCH (2005)

Article Soil Science

Mineral surfaces and soil organic matter

K Kaiser et al.

EUROPEAN JOURNAL OF SOIL SCIENCE (2003)

Article Chemistry, Multidisciplinary

Oxidation of thiol compounds by molecular oxygen in aqueous solutions

GA Bagiyan et al.

RUSSIAN CHEMICAL BULLETIN (2003)