Reclamation of Cr-contaminated or Cu-contaminated agricultural soils using sunflower and chelants.
作者： Angela Cicatelli , Francesco Guarino , Stefano Castiglione
DOI: 10.1007/S11356-017-8655-8
关键词: Phytoremediation 、 Bioavailability 、 Environmental science 、 Environmental engineering 、 Pollution 、 EDDS 、 Soil water 、 Environmental chemistry 、 Soil classification 、 Soil Pollutants 、 Soil contamination
摘要: Chromium (Cr) and copper (Cu) are pollutants with a strong environmental impact. "Green biotechnology" as phytoremediation represents sustainability opportunity for soil reclamation. In this study, we evaluated the possibility to reclaim agricultural soils located in Solofrana valley, contaminated by Cr or Cu. contamination derives repeated flooding events of rivers containing because leather tanning plants, while Cu pollution was due use Cu-rich pesticides agriculture. Both metals showed very low bioavailability. order perform an assisted polluted fields, carried out preliminary ex situ experimentation testing first time sunflowers (cv. Pretor) chelants (ethylenediaminetetraacetic acid (EDTA) and/or ethylene diamine disuccinate (EDDS)), useful when metal bioavailability is low. No symptoms toxicity were observed grown on both soils, biomass improved EDDS added. only slightly enhanced at end treatments. mainly accumulated roots; moreover, also translocated aboveground organs presence EDTA. The demonstrated that slow process not case persistent pollution.
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