Molecular Insights into the Synergistic Inhibition of Microplastics-Derived Dissolved Organic Matter and Anions on the Transformation of Ferrihydrite

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 20, 2025

Ferrihydrite (Fh), as a ubiquitous iron (oxyhydr)oxide, plays an essential role in nutrient cycling and pollutant transformation due to its high surface area diversified reaction sites. In the natural environment, Fh could be easily influenced by coexisting components (particularly dissolved organic matter (DOM) anions). As new important carbon source, microplastic-derived DOM (MP-DOM) directly or indirectly affects morphology fate of Fh, but limited knowledge exists about combined effect MP-DOM anions on transformation. Herein, this study elucidates joint effects polystyrene (PS-DOM) (such Cl-, SO42-, PO43-) Single (especially were shown inhibit hematite (Hm) hindering dissolution recrystallization Fe(III). However, inhibitory was strongly enhanced when PS-DOM coexisted, which is attributed their synergetic inhibiting dissolution/recrystallization occupying more active sites electron transfer. Furthermore, predominantly controlled PS-DOM, especially those containing high-unsaturation, high-oxidation-state, O-rich phenolic compounds. These findings provide perspective significance considering evaluating minerals.

Язык: Английский

---

Microstructure and molecular mechanism of chromium retention to schwertmannite in acidic sulfate environments

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132934 - 132934

Опубликована: Апрель 1, 2025

Язык: Английский

---

Soil potentially toxic elements promote carbon metabolism in alpine meadows on the Qinghai-Xizang Plateau

European Journal of Soil Biology, Год журнала: 2025, Номер 125, С. 103727 - 103727

Опубликована: Апрель 15, 2025

Язык: Английский

---

Formation processes of iron-based layered hydroxide in acid mine drainage and its implications for in-situ arsenate immobilization: Insights and mechanisms

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153313 - 153313

Опубликована: Июнь 19, 2024

Язык: Английский

---

Aerobic Fe transformation induced decrease in the adsorption and enhancement in the reduction of Cr(VI) by humic acid-ferric iron coprecipitates

Journal of Hazardous Materials, Год журнала: 2024, Номер 478, С. 135595 - 135595

Опубликована: Авг. 22, 2024

Язык: Английский

---

Biogenic amorphous FeOOH activated additional intracellular electron flow pathways for accelerating reductive dechlorination of tetrachloroethylene

Water Research, Год журнала: 2024, Номер 267, С. 122489 - 122489

Опубликована: Сен. 20, 2024

Язык: Английский

---

Sunlight-Driven Direct/Mediated Electron Transfer for Cr(VI) Reductive Sequestration on Dissolved Black Carbon–Ferrihydrite Coprecipitates

Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Окт. 3, 2024

Surface runoff horizontally distributed chromium (Cr) pollution into various surface environments. Sunlight is a vital factor for the Cr cycle in environment, which may be affected by photoactive substances such as ferrihydrite (Fh) and dissolved black carbon (DBC). Herein, sunlight-driven transformation dynamics of species on DBC-Fh coprecipitates were studied. Under sunlight, removal aqueous Cr(VI) occurred through reductive sequestration including adsorption, followed reduction (pathway 1) reduction, precipitation 2). Additionally, with higher DBC content exhibited more effective both adsorbed (

Язык: Английский

---

The Influence of Seawater on Fe(II)-Catalyzed Ferrihydrite Transformation and Its Subsequent Consequences for C Dynamics

Environmental Science & Technology, Год журнала: 2024, Номер 58(43), С. 19277 - 19288

Опубликована: Окт. 14, 2024

Short-range-ordered minerals like ferrihydrite often bind substantial organic carbon (OC), which can be altered if the transform. Such mineral transformations catalyzed by aqueous Fe(II) (Fe(II)

Язык: Английский

---

Mechanisms of Cr(Vi) Adsorption and Reduction on Hss-Fe(Iii) Coprecipitates: Synergistic/Antagonistic Effects Induced by Different Hss

Опубликована: Янв. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Язык: Английский

---

Effect of Molybdenum Dioxide Modified Biochar Driven Fe(Ii)/Fe(Iii) Redox Cycle in the Remediation of Cr(Vi) Contamination in Soil

Опубликована: Янв. 1, 2024

Biochar is extensively utilized for the remediation of sites contaminated with heavy metals, mitigating bioavailability and potential environmental risk metals through mechanisms immobilization transformation. However, due to presence metal ions in soil minerals complexity pollution at actual sites, effectiveness biochar amending contamination remains uncertain. This study addresses issue by employing molybdenum dioxide-modified remediate various polluted environments. It also integrates Fe(II)/Fe(III) oxidation-reduction cycle tests confirm efficacy modified removing Cr(VI) explore adsorption mechanisms. The results indicate that addition alters redox-active components soil, enhancing redox cycling iron within soil. decreases following order: dioxide-loaded (BC/M) > ball-milled dioxide (BC+M) original (BC). indicates test, remedial agent utilizing reduce was more effective than capability agent. provides a reference management farmland preparation materials.

Язык: Английский

---