Journal ArticleDOI
Phytoextraction: The Use of Plants To Remove Heavy Metals from Soils
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TLDR
The high metal accumulation by some cultivars of B. juncea suggests that these plants may be used to clean up toxic metal-contaminated sites in a process termed phytoextraction.Abstract:
A small number of wild plants which grow on metal contaminated soil accumulate large amounts of heavy metals in their roots and shoots This property may be exploited for soil reclamation if an easily cultivated, high biomass crop plant able to accumulate heavy metals is identified Therefore, the ability of various crop plants to accumulate Pb in shoots and roots was compared While all crop Brassicas tested accumulated Pb, some cultivars of Brassica juncea (L) Czern showed a strong ability to accumulate Pb in roots and to transport Pb to the shoots (1083 mg Pb/g DW in the roots and 345 mg Pb/g DW in the shoots) B juncea was also able to concentrate Cr{sup -6}, Cd, Ni, Zn, and Cu in the shoots 58, 52, 31, 17, and 7 fold, respectively, from a substrate containing sulfates and phosphates as fertilizers The high metal accumulation by some cultivars of B juncea suggests that these plants may be used to clean up toxic metal-contaminated sites in a process termed phytoextractionread more
Citations
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Journal ArticleDOI
Mechanisms of Cadmium Mobility and Accumulation in Indian Mustard
TL;DR: Indian mustard (Brassica juncea L.), a high biomass crop plant, accumulated substantial amounts of cadmium, with bioaccumulation coefficients associated with a rapid accumulation of phytochelatins in the root, suggesting that the process of Cd transport from solution through the root and into the xylem is mediated by a saturable transport system(s).
Journal ArticleDOI
Phytoremediation of contaminated soils
TL;DR: Two contrasting approaches to remediation are being pursued: pollutant-stabilization and containment, where soil conditions and vegetative cover are manipulated to reduce the environmental hazard; and decontamination, where plants and their associated microflora are used to eliminate the contaminant from the soil as discussed by the authors.
Journal ArticleDOI
Phytoremediation of metals: using plants to remove pollutants from the environment
TL;DR: Phytoremediation uses plants to remove pollutants from the environment and the recent discovery that certain chelating agents greatly facilitate metal uptake by soil-grown plants can make this technology a commercial reality in the near future.
Journal ArticleDOI
Metal hyperaccumulation in plants: Biodiversity prospecting for phytoremediation technology
TL;DR: The importance of biodiversity (below and above ground) is increasingly considered for the cleanup of the metal contaminated and polluted ecosystems, and plants that hyperaccumulate metals have tremendous potential for application in remediation of metals in the environment.
Journal ArticleDOI
Phytoextraction: a cost-effective plant-based technology for the removal of metals from the environment.
Carlos Garbisu,Itziar Alkorta +1 more
TL;DR: Phytoextraction appears a very promising technology for the removal of metal pollutants from the environment and may be, at present, approaching commercialization.