The crystal structure of the supposed tetraphenylferrate(0) salt “[Li(Et2O)]4[FePh4]” reported by Shilov et al. has been reinterpreted, and the unprecedented “flat rectangular” coordination geometry is proposed to be an artifact of a false solution in an incorrect space group. In the correct space group, the phenyl groups actually describe a regular square-planar geometry with cis C-Fe-C angles...

Permeable reactive barrier (PRB) containing zero valent iron (ZVI), plaster and additives to make a porous composite structure, was tested remove an organic nitro compound as model pollutant. An aqueous solution of 4-nitroaniline (PNA) passed through column chemical degradation quantified by UV-Vis spectroscopy. PNA reduced p-phenylenediamine the rate reduction strongly related ZVI amount, poll...

We determined the ability of two iron-and-zeolite materials to remove arsenic from groundwater. The first material is composed of iron, surfactant-modified zeolite, and hard silicate foam, and is known as Surfactant-Modified Zeolite/ Zero-Valent Iron (SMZ/ZVI). The second material is a new formulation that consists of iron-modified zeolite (IMZ). We prepared eight different prototypes of IMZ fo...

Permeable reactive barriers (PRBs) based on the use of zero valent iron (ZVI) represent an efficient technology for remediation contaminated groundwater, but literature evidences “failures”, often linked to difficulty fully understanding long-term performance ZVI-based PRBs in terms their hydraulic behavior. The aim this paper is provide overview behavior composed ZVI mixed with other or inert ...

Herein, respiratory nitrate reductases (NAR) were utilized in the biosynthesis of zero-valent iron (ZVI) graphene nanocomposite as a simultaneous reducing and capping agent, for first time, to efficiently adsorb methylene blue (MB) direct red-81 (DR-81). Under anaerobic conditions, greenly synthesized was incubated with precursor presence crude-NAR enzyme 48 h obtain ZVI composite followed by c...

Abstract In this study, zero-valent iron (ZVI) is applied to activate persulfate (PDS) for the degradation of amaranth (AMR). The effects PDS concentration, ZVI solution pH , temperature, and reaction time on AMR by ZVI/PDS advance oxidation process are investigated. Sulfate hydroxyl radicals involved in main pathway sulfate radical acts as a dominant oxidant. CCD (central composite design) pla...

To solve the problem of poor treatment high concentration landfill leachate, an electro-assisted ultraviolet (UV)/zero-valent iron (ZVI) synergic activated persulfate (PS) system was used to treat leachate. The effects PS and ZVI dosage, initial pH value, current density on removal efficiency COD NH3-N in leachate were investigated. single PS, electrochemical, UV/PS, ZVI/UV co-activated compare...

Remediation of pesticide-polluted soil is particularly challenging when pesticides in soil are aged and a mixture of pesticides is present. Application of zerovalent iron (Fe(0)) was investigated to accelerate the degradation of HCHs (alpha-, beta-, gamma- and delta-hexachlorocyclohexane) and DDX (DDT, DDE and DDD) in the soil from a former organochlorine pesticide manufacturing plant. Ultrason...