Two types of nano-scale zero-valent iron (nZVI-B prepared by borohydride reduction and nZVI-T produced by thermal reduction of iron oxide nanoparticles in H2) and a micro-scale ZVI (mZVI) were compared for PCB degradation efficiency in water and soil. In addition, the ecotoxicity of nZVI-B and nZVI-T particles in treated water and soil was evaluated on bacteria, plants, earthworms, and ostracods. All types of nZVI and mZVI were highly efficient in degradation of PCBs in water, but had little degradation effect on PCBs in soil. Although nZVI-B had a significant negative impact on the organisms tested, treatment with nZVI-T showed no negative effect, probably due to surface passivation through controlled oxidation of the nanoparticles.
- MeSH
- Bacteria účinky léků MeSH
- korýši účinky léků MeSH
- látky znečišťující půdu toxicita MeSH
- nanočástice MeSH
- Oligochaeta účinky léků MeSH
- oxidace-redukce MeSH
- polychlorované bifenyly chemie MeSH
- půda chemie MeSH
- regenerace a remediace životního prostředí * MeSH
- železo chemie farmakologie MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH