Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
581063 | Journal of Hazardous Materials | 2009 | 7 Pages |
Abstract
A greenhouse pot experiment was conducted to test the heavy metal phytoremediation capacity of Jatropha curcas from fly ash. Both natural accumulation by J. curcas and chemically enhanced phytoextraction was investigated. Plants were grown on FA and FA amended with fertile garden soil, in presence and absence of chemical chelating agent EDTA at 0.1 g kgâ1 and 0.3 g kgâ1 of soil. EDTA enhanced the uptake of all five elements (Fe, Al, Cr, Cu and Mn) tested. Fe and Mn were retained more in roots while Cu, Al and Cr were translocated more to the shoot. Metal accumulation index indicates that the effect of EDTA at 0.3 g kgâ1 was more pronounced than EDTA at 0.1 g kgâ1 in terms of metal accumulation. Biomass was enhanced up to 37% when FA was amended with GS. Heavy metal uptake was enhanced by 117% in root, 62% in stem, 86% in leaves when EDTA was applied at 0.3 g kgâ1 to FA amended with GS. Study suggest that J. curcas has potential of establishing itself on FA when provided with basic plant nutrients and can also accumulate heavy metals many folds from FA without attenuating plant growth.
Related Topics
Physical Sciences and Engineering
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Authors
Sarah Jamil, P.C. Abhilash, Nandita Singh, P.N. Sharma,