Jatropha curcas: a potential crop for phytoremediation of coal fly ash.
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 kg(-1) and 0.3 g kg(-1) 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 kg(-1) was more pronounced than EDTA at 0.1 g kg(-1) 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 kg(-1) 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.
Jamil
Sarah
S
Eco-auditing Group, National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India.
Abhilash
P C
PC
Singh
Nandita
N
Sharma
P N
PN
D001673:Biodegradation, Environmental; D018533:Biomass; D002244:Carbon; D002338:Carotenoids / Q000737:chemistry; D002734:Chlorophyll / Q000737:chemistry; D003031:Coal; D060729:Coal Ash; D004492:Edetic Acid / Q000737:chemistry; D052918:Environmental Restoration and Remediation; D031286:Jatropha / Q000378:metabolism*; D015227:Lipid Peroxidation; D008670:Metals / Q000737:chemistry; D019216:Metals, Heavy / Q000737:chemistry*; D015233:Models, Statistical; D052638:Particulate Matter; D012987:Soil; D012989:Soil Pollutants / Q000302:isolation & purification*
D003031:Coal; D060729:Coal Ash; D008670:Metals; D019216:Metals, Heavy; D052638:Particulate Matter; D012987:Soil; D012989:Soil Pollutants; D002734:Chlorophyll; D002338:Carotenoids; D002244:Carbon; D004492:Edetic Acid