Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 24, Issue 26, Pages 21191-21202Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-017-9699-5
Keywords
Polychlorinated biphenyls; Zero-valent iron nanoparticles and microparticles; Remediation; Ecotoxicity; Bacteria; Plants; Earthworms; Ostracods
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Funding
- European Union's Seventh Framework Programme for Research, Technological Development and Demonstration [309517]
- Technology Agency of the Czech Republic (TACR) (Nanobiowat) [TE01020218]
- Ministry of Industry and Trade [FR-TI3/622]
- Ministry of Education, Youth and Sports of the Czech Republic [LO1305, LM2015073]
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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 H-2) 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.
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