Effectiveness of phytoremediation technologies to clean up of metalloids using three plant species in Iran.
Water Environ Res
; 86(1): 43-7, 2014 Jan.
Article
de En
| MEDLINE
| ID: mdl-24617109
ABSTRACT
Phytoremediation is a potential, innovative, and cost-effective technology for non-destructive remediation of heavy-metal contaminated soils. A field trial was conducted to evaluate the phytoremediation efficiencies of three plants and the effects of ethylenediaminetetraacetic acid (EDTA) or ammonium addition [(NH4)2SO4 and NH4NO3] for assisting removal of heavy metals (Pb, Hg, and Cd) from contaminated soil. The tested plants include Amaranthus retroflexus, Sorghum bicolor, and Lolium perrene. Results showed that maximum concentration of Pb, Hg, and Cd were detected in shoots of A. retroflexus, S. bicolor, and L. perrene at high concentrations in pH=6.2. The application of EDTA as a chelating agent to soil was the most efficient to enhance the phytoavailability of Pb, Hg and Cd. The concentrations of Pb, Hg, and Cd in the shoots of A. retroflexus treated with EDTA were 57 mg/kg, 14.1 mg/kg, and 30 mg/kg, respectively. Results indicated that among the three plants, A. retroflexus had great potential in phytoremediation of contaminated soils.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Polluants du sol
/
Lolium
/
Amaranthus
/
Sorghum
/
Métalloïdes
Pays/Région comme sujet:
Asia
Langue:
En
Journal:
Water Environ Res
Sujet du journal:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Année:
2014
Type de document:
Article