Items 51-60 of 173
Effects of selected ligands on U (VI) immobilization by zerovalent iron
The effects of Cl-, CO3 2-, EDTA, NO2 -, NO3 -, PO4 3-, SO4 2-, and humic substances (HS) on U(VI) co-precipitation from aqueous solutions by zerovalent iron (ZVI) in the neutral pH range was investigated. Not shaken ...
Laboruntersuchungen zur Freisetzung von Unat aus einem Gestein unter oxischen naturnahen Bedingungen
Im Labor wurden verschiedene Größen (pH-Wert, HCO3 --Gehalt, Präsenz von Fe(OH)3) untersucht, von denen angenommen werden konnte, dass sie die umweltrelevante Freisetzung von Uran aus Gesteinen (z.B. Haufwerken, Halden, ...
Testing the Suitability of Zerovalent Iron Materials for Reactive Walls
Zerovalent iron (ZVI) has been proposed as reactive material in permeable in-situ walls for contaminated groundwater. An economically feasible ZVI reactive wall requires cheap but efficient iron materials. From an uranium ...
Metallic iron for safe drinking water worldwide
A new concept for household and large-scale safe drinking water production is presented. Raw water is successively filtered through a series of sand and iron filters. Sand filters mostly remove suspended particles (media ...
Impact of MnO2 on the efficiency of metallic iron for the removal of dissolved CrVI, CuII, MoVI, SbV, UVI and ZnII
The idea that manganese oxide (MnO2) sustains the reactivity of metallic iron (Fe0) is investigated in this study. A multi-elemental aqueous system containing CrVI, CuII, MoVI, SbV, UVI, and ZnII (each about 100 μM) was ...
Characterizing the reactivity of metallic iron in Fe0/UVI/H2O systems by long-term column experiments
Aqueous iron corrosion has been identified as a powerful process for environmental remediation and safe drinking water provision. The intrinsic reactivity of conventional micro-scale metallic iron (Fe0) has been mostly ...
Metallic iron for water treatment: A knowledge system challenges mainstream science
A knowledge system (KS) is a knowledge that is unique to a given group of persons. This form of knowledge may have a local or natural origin and is linked to the community that has produced it. On the contrary, the core ...
The suitability of metallic iron for environmental remediation
Aqueous contaminant removal in the presence of metallic iron is often regarded as a reductive transformation mediated by the Fe0 surface. However, successful removal of theoretically non-reducible contaminants has been ...
Comments on: “The effect of substituent groups on the reductive degradation of azo dyes by zerovalent iron.” By Hou M. et al. [J. Hazard. Mater. 145 (2007) 305]
This letter discusses possible improvements in experimental conditions to enable a purposeful discussion on the effect of substituent groups on the reductive degradation of azo dyes by elemental iron (Fe0) in a recent ...