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Zero Valent Iron Articles & Analysis
87 articles found
Therefore, the remediation company DEKONTA arrived at an inventive decision to combine the direct-push injected NANOFER particles with a subsequent employment of the thermally enhanced in-situ bioremediation supported by the application of organic substrate (lactate). REMEDIATION APPROACH Iron nanoparticles were applied under pressure into a very complex geological matrix in ...
The subject property formerly operated as the Retail and Commercial Farm facility. The facility formerly stored and sold feed, farm equipment, and various farming chemicals (fertilizers, herbicides, and pesticides, etc.). In 2015, prior to the potential sale of the property, a Phase I Environmental Site Assessment (ESA) and subsequent Phase II ESA were undertaken. The Phase II ESA identified ...
Permanganate was injected via direct push borings to treat the margins of the plume and a reactive barrier consisting of granular zero-valent iron and EHC from Adventus was created via direct-push injection just upgradient of the channel. ...
HWA contracted Leo Lehmicke, Ph.D., to help design the cleanup, which included ‘flipping’ the aquifer chemistry to a reducing environment (by adding zero-valent iron), adding electron donor (emulsified vegetable oil), substrate (lactic acid), and chlorinated solvent-degrading bacteria. ...
Nanoscale zero-valent iron (NZVI) was first assembled on magnetic carbon/Fe3O4 (CM) with a combination of hydrothermal and liquid phase reduction methods. ...
In this study, a novel oxidative conditioning approach was applied to enhance the dewaterability of waste activated sludge by the combination of zero-valent iron (ZVI) and peroxymonosulfate (PMS). It was found that the dewaterability of sludge was significantly improved after the addition of ZVI (0–4 g/g TSS) (TSS: total suspended solids) and PMS ...
In this study, the hydrogenotrophic denitrifying bacterium Ochrobactrum anthropi was added in to the process of nitrate removal by starch-stabilized nanoscale zero valent iron (nZVI) to minimize undesirable ammonium. The ammonium control performance and cooperative mechanism of this combined process were investigated, and batch experiments ...
This study examined the feasibility of nanoscale zero-valent iron (nZVI) for the single and combined removal of Cr(VI) and Cd(II) with or without ethylene diamine disuccinic acid (EDDS). ...
However, the need to improve process feasibility of high treatment efficiency as well as to shorten hydraulic retention time has raised interest on several intensification techniques. Zero valent iron (ZVI) packed anaerobic digesters have the potential to become an on-site upgrading wastewater treatment technology through building a ZVI bed in a ...
In this research, ostrich bone ash (OBA) was modified with nanoscale zerovalent iron (nZVI) particles and applied as a novel composite adsorbent (OBA/nZVI) for dynamic adsorption/reduction of Hg(II) and Pb(II) ions in a fixed-bed column system. Entrapment of nZVI in OBA beads barricades the particles from oxidation and aggregation. The dynamic behavior of metal ions removal by OBA/nZVI was ...
Experimental variables of initial dye concentration, iron dosage, microwave power, solution pH and initial H2O2 concentration were systematically studied. ...
Remedial Approach: We integrated ISCO using potassium permanganate in the source area, with ISCR using zero valent iron barriers in the downgradient plume area. Reagents were injected as high-solids slurries to distribute large reagent volumes effectively within specific and focused target zones in the low-permeability saprolite and a fractured ...
Herein, chitosan (CS) impregnated with nanoparticles of zero-valent iron (NZVI) was fabricated onto a magnetic composite of CS@NZVI as an adsorbent for cadmium (Cd2+) removal from aqueous solution. ...
A reductive process has been investigated as an alternative treatment method for NDMA removal from water. In this manuscript, zero-valent iron nanoparticles (ZVINPs) were synthesized, and then supported on mesoporous silica materials with high surface area (MCM-41) to prepare a stable ZVINP/MCM-41 nanocomposite. ...
In this research, the novel diatomite-supported palladium-copper catalyst (Pd-Cu/diatomite) with zero-valent iron (Fe0) was tried to use for catalytic reduction of nitrate in wastewater. ...
Removal of selenite ions from aqueous solutions under anoxic condition at pH 6–8.5 by zero valent iron steel wool (ZVI-SW) was investigated in bench-scale kinetic experiments using wet chemical, microscopic and spectroscopic techniques (X-ray photoelectron spectroscopy). ...
Silica nanoparticles with a surface area of 673.60 m2/g and particle size of 8–12 nm were prepared using aerogel process (AP) followed by super critical drying. Zero valent Fe, Co, Pt, and bimetallic Fe/Pt and Fe/Co were loaded using an incipient wetness impregnation technique and subsequent reduction. Scanning electron microscopy-energy dispersive X-ray ...
A novel iron-carbon micro-electrolysis system, bamboo-derived biochar coupled with zero-valent iron (ZVI), was investigated for chlorobenzene (CB)-contaminated groundwater removal. ...
The production of zero-valent iron nanoparticles, using extracts from natural products, represents a green and environmentally friendly method. Synthesis of ‘green’ zero-valent nanoparticles (nZVI) using oak and mulberry leaf extracts (OL-nZVI and ML-nZVI) proved to be a promising approach for Ni(II) and ...
Nanoscale zero-valent iron coated on diatomite (nZVI-D) was successfully synthesized as a composite material. ...