manganese is one of the significant raw materials for various industries and most difficult element to remove from water because of its high solubility. the treatment of mn (ii) contained wastewater is stringent for environmental preservations. in the present study adsorption of mn2+ on zero-valent iron nanoparticles synthesized by chemical reduction process and modified with phosphate coating ...

conclusions considering the simplicity and efficiency of zero valent iron powder, this method is recommended for removing azo dyes from aqueous environments. results the results of this research showed ph = 3 and contact time = 120 minutes, increasing the zvi dose from 200 to 5000 mg/l in 100 mg/l dye concentration, increased the adsorption efficiency from 36.78% to 97.57%. rr-198 removal follo...

Zero-valent iron (ZVI) nanoparticle exists a nanoscale (1-100 nm) of the particle with zero oxidation number. It has acquired considerable attention for its potential to capture free-electron moieties. The production and storage ZVI material, however, is challenging because it relatively unstable. In this research, we aim study solvent effects on preparation characterization. nano-scaled was sy...

Abstract Zero-valent iron has been used for more than 130 years water treatment. It is based on redox reactions as well sorption to the corrosion products of iron. successfully applied removal metals and organic pollutants from groundwater wastewater. There are different variations how zero-valent can be used, especially (i) permeable reactive barriers, (ii) fluidized bed reactors (iii) nanosca...

This paper describes the results of the first field-scale demonstration conducted to evaluate the performance of nanoscale emulsified zero-valent iron (EZVI) injected into the saturated zone to enhance in situ dehalogenation of dense, nonaqueous phase liquids (DNAPLs) containing trichloroethene (TCE). EZVI is an innovative and emerging remediation technology. EZVI is a surfactant-stabilized, bi...

The scientific legacy of Zvi Griliches’ contribution to the economic analysis of the diffusion of technological innovations is the subject of this paper. It begins with an examination of the relationship between Griliches’ pioneering empirical work on the introduction and adoption of hybrid corn and the subsequent development of theoretical models and econometric research on the microeconomic d...

Due to the large volumes of solid waste produced by traditional arsenic-rich lime iron salt precipitation method treatment during wet-smelting precious metal workshops, raw As(V)-rich wastewater from a domestic metallurgical enterprise was chosen as research object. Zero-valent (ZVI) used remove arsenate (As(V)) wastewater. Factors affecting adsorption As(V), such ZVI size and time, were invest...