Browsing by Author "Joner Erik J."

Now showing 1 - 4 of 4
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    DDT degradation efficiency and ecotoxicological effects of two types of nano-sized zero-valent iron (nZVI) in water and soil
    (Elsevier, 2016-01-01) El-Temsah Yehia; Ševců Alena; Bobčíková Kateřina; Černík Miroslav; Joner Erik J.
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    Ecotoxicity of Nanomaterials Used for Remediation
    (Springer, 2020-01-01) Coutris Claire; Ševců Alena; Joner Erik J.
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    Ecotoxicity testing and environmental risk assessment of iron nanomaterials for sub-surface remediation – Recommendations from the FP7 project NanoRem
    (Pergamon Press Ltd., 2017-01-01) Hjorth Rune; Coutris Claire; Nguyen Nhung Anh Huynh; Ševců Alena; Gallego-Urea Julian Alberto; Baun Anders; Joner Erik J.
    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.
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    Oxidative stress induced in microorganisms by zero-valent iron nanoparticles
    (JSME, 2011-01-01) Ševců Alena; Černík Miroslav; Joner Erik J.; El-Temsah Yehia Sayed Ismail