Evaluating the mobility of polymer-stabilised zero-valent iron nanoparticles and their potential to co-transport contaminants in intact soil cores
- Resource Type
- Authors
- Ezzat R. Marzouk; Gianluca Brunetti; Erica Donner; Ho Kyong Shon; Enzo Lombi; Ravi Naidu; A. Maoz-Shen; Laura Chekli; Euan Smith
- Source
- Environmental pollution (Barking, Essex : 1987). 216
- Subject
- radiolabeling
Environmental remediation
Polymers
Health, Toxicology and Mutagenesis
Iron
Metal Nanoparticles
02 engineering and technology
010501 environmental sciences
Toxicology
01 natural sciences
Soil
CMC
Soil Pollutants
Leaching (agriculture)
isotope
Environmental Restoration and Remediation
0105 earth and related environmental sciences
Zerovalent iron
Iron Radioisotopes
zero-valent iron
General Medicine
Contamination
021001 nanoscience & nanotechnology
Pollution
Soil contamination
mobility
6. Clean water
Environmental chemistry
Soil water
Environmental science
Soil horizon
Arsenates
nanoparticles
0210 nano-technology
Environmental Sciences
Groundwater
- Language
- ISSN
- 1873-6424
The use of zero-valent iron nanoparticles (nZVI) has been advocated for the remediation of both soils and groundwater. A key parameter affecting nZVI remediation efficacy is the mobility of the particles as this influences the reaction zone where remediation can occur. However, by engineering nZVI particles with increased stability and mobility we may also inadvertently facilitate nZVI-mediated contaminant transport away from the zone of treatment. Previous nZVI mobility studies have often been limited to model systems as the presence of background Fe makes detection and tracking of nZVI in real systems difficult. We overcame this problem by synthesising Fe-59 radiolabelled nZVI. This enabled us to detect and quantify the leaching of nZVI-derived Fe-59 in intact soil cores, including a soil contaminated by Chromated-Copper-Arsenate. Mobility of a commercially available nZVI was also tested. The results showed limited mobility of both nanomaterials