Ecotoxicity testing and environmental risk assessment of iron nanomaterials for sub-surface remediation - Recommendations from the FP7 project NanoRem
Language English Country Great Britain, England Media print-electronic
Document type Journal Article
PubMed
28521168
DOI
10.1016/j.chemosphere.2017.05.060
PII: S0045-6535(17)30764-6
Knihovny.cz E-resources
- Keywords
- Ecotoxicology, Environmental risk assessment, Iron nanomaterials, NanoRem, Nanoremediation, nZVI,
- MeSH
- Metal Nanoparticles chemistry toxicity MeSH
- Environmental Monitoring methods MeSH
- Environmental Restoration and Remediation * MeSH
- Toxicity Tests methods MeSH
- Iron chemistry toxicity MeSH
- Zeolites MeSH
- Environmental Pollution MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Geographicals
- Europe MeSH
- Names of Substances
- Iron MeSH
- Zeolites MeSH
Nanoremediation with iron (Fe) nanomaterials opens new doors for treating contaminated soil and groundwater, but is also accompanied by new potential risks as large quantities of engineered nanomaterials are introduced into the environment. In this study, we have assessed the ecotoxicity of four engineered Fe nanomaterials, specifically, Nano-Goethite, Trap-Ox Fe-zeolites, Carbo-Iron® and FerMEG12, developed within the European FP7 project NanoRem for sub-surface remediation towards a test battery consisting of eight ecotoxicity tests on bacteria (V. fisheri, E. coli), algae (P. subcapitata, Chlamydomonas sp.), crustaceans (D. magna), worms (E. fetida, L. variegatus) and plants (R. sativus, L. multiflorum). The tested materials are commercially available and include Fe oxide and nanoscale zero valent iron (nZVI), but also hybrid products with Fe loaded into a matrix. All but one material, a ball milled nZVI (FerMEG12), showed no toxicity in the test battery when tested in concentrations up to 100 mg/L, which is the cutoff for hazard labeling in chemicals regulation in Europe. However it should be noted that Fe nanomaterials proved challenging to test adequately due to their turbidity, aggregation and sedimentation behavior in aqueous media. This paper provides a number of recommendations concerning future testing of Fe nanomaterials and discusses environmental risk assessment considerations related to these.
References provided by Crossref.org
