Mechanism of Dissolved Organic Matter Constructing Zerovalent Iron Interfacial Mass-Transfer Channel Combined with Shewanella oneidensis MR-1 To Remove Cr(VI) DOI
Minghui Xiang, Long Chen,

Xinlei Ren

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Nanoscale zerovalent iron (nZVI) is a promising remediation agent for the removal of heavy-metal wastewater. However, nZVI tends to agglomerate and be oxidatively deactivated during reaction, which limits its application. To address problem, this study develops novel modification method regulate reaction interface by introducing fulvic acid (FA), naturally occurring environmental component, synthesis nZVI. FA disrupts circumferential-stress equilibrium nZVI, enhances Kirkendall effect, establishes mass-transfer channels, facilitating outward transfer reducible Fe(II) electrons inward transport surface-adsorbed Cr(VI). The Cr(VI) further enhanced coupling FA-nZVI with Shewanella oneidensis MR-1, reduces Fe(III) hydroxides at interface, thereby preventing accumulation passivation layer that blocks channels. synergistic action channels MR-1 rate 4.7 times, ensuring more than 60% under extreme conditions. By exploring new functions as an organic carbon provides fresh perspective on utilization in ecosystems. Leveraging factors microstructural modulation efficient environmentally friendly approach pollution.

Language: Английский

Highly efficient removal of 1,1,1-trichloroethane from simulated groundwater by polydopamine-modified iron/polylactic acid/biochar composite coupling with Shewanella oneidensis MR-1 DOI
Haitao Yin,

Liang Meng,

Li Li

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113920 - 113920

Published: Aug. 23, 2024

Language: Английский

Citations

46
Accelerated removal of organic pollutants by biochar-based iron carbon granule-activated periodate in chloride-containing water: The role of active chlorine DOI
Xiang Li,

Gaili Zhang,

Mengke Zhang

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 351, P. 128029 - 128029

Published: May 22, 2024

Language: Английский

Citations

7
Nano Fe(0)-Functionalized Zeolites: Boosting Oxidation Resistance and Longevity of Cr(VI) Removal through Alkaline Treatment DOI

Min‐Hee Choi,

Sungjun Bae

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115337 - 115337

Published: Jan. 1, 2025

Language: Английский

Citations

0
Application of Zero-Valent Iron and Its Derivatives in the Removal of Toxic Metal Ions from Groundwater DOI Open Access

Yaksha Verma,

Akshay Verma,

Aishwarya Bhaskaralingam

et al.

Water, Journal Year: 2025, Volume and Issue: 17(10), P. 1524 - 1524

Published: May 18, 2025

Zero-valent iron (ZVI), particularly in its nanoscale form (nZVI), is now considered a highly promising material for the remediation of toxic metal ions from polluted groundwater owing to strong reductive potential, significant surface area, and reactive behavior. This review systematically explores application pristine modified ZVI systems—including doped ZVI, bio-stabilized composites, supported on advanced materials like MXene nanocellulose—for effective treatment water containing species As(III/V), Hg(II), Cr(VI), Ni(II). Emphasis placed understanding underlying mechanisms, including redox reactions, complexation, synergistic adsorption–reduction pathways. Key factors affecting adsorption efficiency—such as pH, temperature, dosage, competing ions—are thoroughly analyzed, alongside kinetics isotherm models. Modified composites exhibit enhanced stability, selectivity, reusability, demonstrating performance even complex aqueous environments. Despite progress, challenges such nanoparticle passivation, limited field-scale data, potential toxicity byproducts remain. The concludes by highlighting future research directions focused improving longevity, regeneration efficiency, selective adsorption, integration with other technologies sustainable scalable treatment.

Language: Английский

Citations

0
Lipase Enzyme Immobilized Magnetic NanoAdsorbent: A promising candidate to efficiently remove chromium from aqueous media DOI

Aqsa Tunio,

Aamna Balouch, Farah Naz Talpur

et al.

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 323, P. 129632 - 129632

Published: Sept. 1, 2024

Language: Английский

Citations

1
Mechanism of Dissolved Organic Matter Constructing Zerovalent Iron Interfacial Mass-Transfer Channel Combined with Shewanella oneidensis MR-1 To Remove Cr(VI) DOI
Minghui Xiang, Long Chen,

Xinlei Ren

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Nanoscale zerovalent iron (nZVI) is a promising remediation agent for the removal of heavy-metal wastewater. However, nZVI tends to agglomerate and be oxidatively deactivated during reaction, which limits its application. To address problem, this study develops novel modification method regulate reaction interface by introducing fulvic acid (FA), naturally occurring environmental component, synthesis nZVI. FA disrupts circumferential-stress equilibrium nZVI, enhances Kirkendall effect, establishes mass-transfer channels, facilitating outward transfer reducible Fe(II) electrons inward transport surface-adsorbed Cr(VI). The Cr(VI) further enhanced coupling FA-nZVI with Shewanella oneidensis MR-1, reduces Fe(III) hydroxides at interface, thereby preventing accumulation passivation layer that blocks channels. synergistic action channels MR-1 rate 4.7 times, ensuring more than 60% under extreme conditions. By exploring new functions as an organic carbon provides fresh perspective on utilization in ecosystems. Leveraging factors microstructural modulation efficient environmentally friendly approach pollution.

Language: Английский

Citations

1