Transfer of metals from crude oil impacted soils to some native wetland species, the Niger-delta, Nigeria: Implications for phytoremediation potentials
In this study, wetland species growing naturally in the surrounding of two crude oil facilities were sampled and screened for their phytoremediation potentials for zinc, lead, nickel, chromium and cadmium in soil. Concentrations of metals in the root and shoot samples of the wetland species...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade - Faculty of Agriculture, Belgrade
2016-01-01
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| Series: | Journal of Agricultural Sciences (Belgrade) |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-8109/2016/1450-81091602181O.pdf |
| Summary: | In this study, wetland species growing naturally in the surrounding of two
crude oil facilities were sampled and screened for their phytoremediation
potentials for zinc, lead, nickel, chromium and cadmium in soil.
Concentrations of metals in the root and shoot samples of the wetland species
alongside the rhizosphere soil were determined. Metal accumulation in wetland
species exceeded the permissible limits, but it was still within phytotoxic
thresholds except for chromium. The use of a bioconcentration factor and a
transfer factor to screen the wetland species for phytoremediation potentials
identified six out of the eight studied species as multi-elemental
phytostabilizers of metals in soil. In addition, five of the eight wetland
species displayed potentials for phytoextraction of metal, though there was
no multi-elemental phytoextractor among the wetland species. Paspalum
vaginatum, Andropogon tectorum and Kyllinga squamata portend potential
abilities to phytoextract nickel. In addition, Setaria longiseta and
Pteridium aquilinum also showed strong potential to phytoextract lead and
cadmium respectively from soil. This screening assessment is hoped to be
useful in the applications of a cost-effective green technology to remediate
heavy metals in contaminated soil. |
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| ISSN: | 1450-8109 2406-0968 |