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@ARTICLE{Schiwy:825924,
author = {Schiwy, Andreas and Maes, Hanna M. and Koske, Daniel and
Flecken, Mirkko and Schmidt, Kathrin R. and Schell, Hecko
and Tiehm, Andreas and Kamptner, Andre and Thümmler, Silke
and Stanjek, Helge and Heggen, Marc and Dunin-Borkowski,
Rafal and Schäffer, Andreas and Hollert, Henner},
title = {{T}he ecotoxic potential of a new zero-valent iron
nanomaterial and its efficiency in eliminating chlorinated
pollutants},
journal = {Environmental pollution},
volume = {216},
issn = {0013-9327},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-00203},
pages = {419 - 427},
year = {2016},
abstract = {The purpose of this study was to assess the ecotoxic
potential of a new zero-valent iron nanomaterial produced
for the elimination of chlorinated pollutants at
contaminated sites. Abiotic dechlorination through the newly
developed nanoscale zero-valent iron material and its
effects on dechlorinating bacteria were investigated in
anaerobic batch and column experiments. The aged, i.e.
oxidized, iron material was characterization with dynamic
light scattering, transmission electron microscopy and
energy dispersive x-ray analysis, x-ray diffractometry and
cell-free reactive oxygen measurements. Furthermore, it was
evaluated in aerobic ecotoxicological test systems with
algae, crustacean, and fish, and also applied in a mechanism
specific test for mutagenicity. The anaerobic column
experiments showed co-occurrence of abiotic and biological
dechlorination of the common groundwater contaminant
perchloroethene. No prolonged toxicity of the nanomaterial
(measured for up to 300 days) towards the investigated
dechlorinating microorganism was observed. The nanomaterial
has a flake like appearance and an inhomogeneous size
distribution. The toxicity to crustacean and fish was
calculated and the obtained EC50 values were 163 mg/L and
458 mg/L, respectively. The nanomaterial showed no
mutagenicity. It physically interacted with algae, which had
implications for further testing and the evaluation of the
results. Thus, the newly developed iron nanomaterial was
slightly toxic in its reduced state but no prolonged
toxicity was recorded. The aquatic tests revealed a low
toxicity with EC50 values ≥ 163 mg/L. These concentrations
are unlikely to be reached in the aquatic environment.
Hence, this nanomaterial is probably of no environmental
concern not prohibiting its application for groundwater
remediation.},
cin = {PGI-5},
ddc = {333.7},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27317494},
UT = {WOS:000383930500045},
doi = {10.1016/j.envpol.2016.05.051},
url = {https://juser.fz-juelich.de/record/825924},
}