Effect of Organic Matter on Iodine Migration and Transformation in Groundwater

Advances in Environmental Protection, Journal Year: 2025, Volume and Issue: 15(01), P. 38 - 43

Published: Jan. 1, 2025

Language: Английский

---

Cadmium Immobilization on Fe Oxyhydroxides Enhanced by DOM Using Single-Molecule Determinations

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

The groups from dissolved organic matter (DOM) enhance cadmium (Cd) immobilization on Fe oxyhydroxide, while it is difficult to evaluate the contributions of different binding configurations and strength between Cd oxyhydroxides because DOM's complex composition lack in situ methods. Here, we selected small molecules with representative functional investigate molecular mechanisms goethite using batch experiments, solid characterization, theoretical calculations, single-molecule force spectroscopy (SMFS) combined K-means analysis. These increase adsorption goethite, carboxyl showing most substantial enhancement (increased by 81.7%). Solid-state characterization reveals that primary driver enhanced immobilization, promoting formation new Cd–O(C) Cd–O(Fe/C) bonds. Especially, thermodynamic analysis indicates bonds represent 75%–80% total presence molecules. Notably, newly developed results show a strong correlation capacity, which may deepen understanding DOM-mediated oxyhydroxides, offering crucial insights into behavior providing basis for pollution control subsurface superficial environments.

Language: Английский

---

Spatial distribution and formation mechanisms of high‑iodine groundwater throughout China

Earth-Science Reviews, Journal Year: 2025, Volume and Issue: unknown, P. 105134 - 105134

Published: April 1, 2025

Language: Английский

---

Release and Redistribution of Arsenic Associated with Ferrihydrite Driven by Aerobic Humification of Exogenous Soil Organic Matter

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Humification of exogenous soil organic matter (ESOM) remodels the compositions and microbial communities soil, thus exerting potential impacts on biogeochemical transformation iron (hydr)oxides associated trace metals. Here, we conducted a 70-day incubation experiment to investigate how aerobic straw humification influenced repartitioning arsenic (As) with ferrihydrite in paddy soil. Results showed that was characterized by rapid OM degradation (1-14 days) subsequent slow maturation (14-70 days). During stage, considerable As (13.1 mg·L-1) released into aqueous phase, which reimmobilized solid phase stage. Meanwhile, low-crystalline structural As/Fe converted more stable species, subtle crystalline transformation. The generated highly unsaturated phenolic compounds enriched Enterobacter Sphingomonas induced (∼3.1%) As(V) reduction, leading release during In carboxylic-rich alicyclic molecules facilitated reimmobilization. Throughout process, organo-mineral complexes formed between via C-O-Fe bond contributed solid-phase stabilization. Collectively, this work highlighted ESOM humification-driven (hydr)oxide redistribution, advancing our understanding coupled behaviors C, Fe,

Language: Английский

---

The fate of cadmium during ferrihydrite phase transformation affected by dissolved organic matter: Insights from organic-mineral interaction

Chemical Geology, Journal Year: 2024, Volume and Issue: 670, P. 122424 - 122424

Published: Sept. 24, 2024

Language: Английский

---

Iodine Activation from Iodate Reduction in Aqueous Films via Photocatalyzed and Dark Reactions

ACS Earth and Space Chemistry, Journal Year: 2024, Volume and Issue: 8(12), P. 2495 - 2508

Published: Dec. 3, 2024

Iodine in the atmosphere destroys ozone and can nucleate particles by formation of iodic acid, HIO

Language: Английский

---