The mechanism of Escherichia coli inactivation by nanoparticulate zerovalent iron (nZVI) and Fe(II) was investigated using reactive oxygen species (ROS) quenchers and probes, an oxidative stress assay, and microscopic observations. Disruption of cell membrane integrity and respiratory activity was observed under deaerated conditions [more disruption by nZVI than Fe(II)], and OH or Fe(IV) appear...

1,2-Dichloroethane (1,2-DCA) is a chlorinated solvent classified as a probable human carcinogen. Due to its extensive use in industrial applications, widespread contamination, and recalcitrance toward abiotic dechlorination, 1,2-DCA remains a challenging compound for the remediation community. Over the past decade, nano zerovalent iron (nZVI) has been efficiently used to treat many of the chlor...

For nearly three decades, zero-valent iron (ZVI) has been used in wastewater treatment and groundwater soil remediation. ZVI can degrade contaminants by reactions of adsorption, redox, co-precipitation. It also react with oxidants like hydrogen peroxide, persulfate, ozone to produce highly reactive radicals that rapidly remove even mineralize organic contaminants. However, the application is li...

Zero-valent iron (ZVI) and rice husk (RH) have potential as adsorbents for heavy metals; however, their effects on plaque formation metal uptake by plants are still unclear. In this study, the impacts of ZVI, RH combinations root surface As Cd were investigated. A pot experiment was performed under waterlogged conditions using As(III)- or Cd(II)-spiked soil. The results showed that ZVI (0.05% 0...

The reduction of Triphos [PhP(CH(2)CH(2)PPh(2))(2)] iron halide complexes has been explored, yielding formally zerovalent (κ(3)-Triphos)Fe(κ(2)-Triphos) and (κ(3)-Triphos)Fe(κ(2)-Bpy). Electrochemical analysis, coupled with the metrical parameters of (κ(3)-Triphos)Fe(κ(2)-Bpy), reveal an electronic structure consistent with a π-radical monoanion bipyridine chelate that is antiferromagnetically ...

We investigated the performance of a heterogeneous Fenton-like reaction (ZVI-Fenton, i.e. , ZVI + H 2 O where = zero-valent iron) towards removal potentially pathogenic bacteria in wastewater (WW). The effectiveness process was live (measured by flow cytometry) as well (identified 16S rRNA amplicon sequencing), antibiotic resistance genes and class 1 integrons (assessed qPCR). ZVI-Fenton result...

The purpose is to optimize the catalytic performance of biochar (BC), improve removal effect BC composites on organic pollutants in wastewater, and promote recycling sustainable utilization water resources. Firstly, various characteristics preparation principles new are discussed. Secondly, types wastewater their Finally, based principle removing pollutants, BC/zero valent iron (BC/ZVI) composi...

The presence of anglesite (PbSO4) in complex sulfide ores negatively affects the separation Cu-Pb sulfides and sphalerite (ZnS) due to lead activation, PbSO4 rejected tailings dams contaminates surrounding environment with lead. To address these problems, this study investigated application ethylene diamine tetra acetic acid (EDTA) pretreatment extracting ZnS flotation recovery extracted Pb2+ a...