http://www.cnr.it/ontology/cnr/individuo/prodotto/ID53068
Strategies to use phytoextraction in very acidic soil contaminated by heavy metals. (Articolo in rivista)
- Type
- Label
- Strategies to use phytoextraction in very acidic soil contaminated by heavy metals. (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
Pedron F., Petruzzelli G., Barbafieri M., Tassi E. (2009)
Strategies to use phytoextraction in very acidic soil contaminated by heavy metals.
in Chemosphere
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Pedron F., Petruzzelli G., Barbafieri M., Tassi E. (literal)
- Pagina inizio
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- ISI Web of Science (WOS) (literal)
- Titolo
- Strategies to use phytoextraction in very acidic soil contaminated by heavy metals. (literal)
- Abstract
- In microcosm experiments, the use of inorganic and organic amendments has been studied as potential
agents to reduce heavy metal bioavailability in an acidic soil highly contaminated by Cu, Zn and Ni, that
has to be remediated by phytoremediation. The concentrations of heavy metals in the original soil (OSoil)
produced phytotoxic effects with a strong reduction in biomass yield that hinder the utilization
of this technology. To overcome phytotoxicity the use of three immobilizing agents was evaluated. The
results obtained showed that all the strategies decreased the mobile fractions of heavy metals in soil
and increased the metal removal efficiency. In the case of Brassica juncea the best results for Zn and Ni
were obtained after zeolites addition (Z-Soil) with an increase of about 6 times with respect to the value
found in the O-Soil. In the case of Cu, the more efficient treatment was Ca(OH)2 addition (Ca-Soil). The B.
juncea plants accumulated Cu amounts 8 times greater than in the O-Soil. For this metal, relevant results
were obtained also with compost, that increased the amount of Cu in the plants of 7 times with respect to
the O-Soil. Similar results were obtained with Helianthus annuus the highest Zn and Ni accumulation was
detected in the Z-Soil and compost-treated soils (C-Soil), with an increase of nearly 11 times with respect
to the accumulation in the O-Soil. In the case of Cu the highest increase of total uptake was found in the
C-Soil: 28 times higher than in the O-Soil. Total accumulation in Poa annua plants showed the highest
removal efficiency in the Z-Soil for all metals. The values obtained increased of 4, 11 and 12 times for
Cu, Zn and Ni, respectively. (literal)
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