The subsurface injection of nanoscale zero-valent iron particles (nZVI) for the in situ reductive remediation contaminated aquifers has grown over last 25 years. However, several efforts are still being made to improve stability and delivery nZVI simplify procedure site-specific design. In this study, injectability mobility a commercial nZVI-based reactive gel was tested radial geometry laborat...

hexavalent chromium is mobile and hazardous in the environment. electrokinetic remediationof chromium (iv)-contaminated soils is intended either to remove or to reduce cr (vi) to cr (iii). this studyexamines the effectiveness of utilizing edta and acetic acid solutions as alternative electrolytes in theelectrokinetic (ek) process, with coupled nano-scale zero-valent iron (nzvi) as a barrier for...

Abstract Biochar (BC) has gained attention for removal of toxic elements (TEs) from aqueous media; however, pristine biochar often exhibits low adsorption capability. Thus, various modification strategies in BC have been developed to improve its capability against TEs. Nanoscale zero-valent iron (nZVI) and oxides (FeOx) used as sorbents TE removal. However, these materials are prone agglomerati...

Nanozero-valent iron (NZVI) shows great potential in the remediation of water pollution, but its application is limited by instability and tendency to aggregate. To enhance dispersibility antioxidant properties NZVI, we prepared composites (SN) wrapping NZVI with sodium alginate (SA) for removal Pb(II) from water. Various characterization methods such as SEM-EDS, BET, XPS, FT-IR were used study...

Nanoscale zero-value iron (nZVI) has a high specific surface area and significant abilities to reduce contaminants. In this study, the removal of color COD from real textile wastewater was studied by nZVI particles. A series experiments were conducted evaluate effect operational parameters such as solution pH, dosage temperature on removal. The results showed that removals mainly depend pH. eff...

The in situ synthesis of air-stable zero-valent iron nanoparticles (NZVI) embedded in cellulose fibers leads to the assembly of highly reactive magnetic filter papers. These engineered materials display a wide range of applications in the treatment of wastewater and drinking water, including chromium removal, phenol degradation, environmental bioremediation, and catalysis.

background contamination of water resources with nitrate is a serious environmental problem in many regions of the world. in addition, this problem has been observed in some regions of iran. as nitrate is threatening for human health and environment, it must be decreased to standard levels in drinking water. objectives the purpose of this research was to model the nitrate removal from water by ...

Subsurface injection of nanoscale zerovalent iron (NZVI) has been used for the in situ remediation of chlorinated solvent plumes and DNAPL source zones. Due to the cost of materials and placement,the efficacy of this approach depends on the NZVI reactivity and longevity, selectivity for the target contaminant relative to nonspecific corrosion to yield H2, and access to the Fe0 in the particles....