An Investigational Analysis of Napier Grass (Pennisetum Purpureum) as a Phytoremediation Agent for Heavy Metal Absorption from Soil
Dr. Pushpanjali SinghHeavy metals are the significant source of contaminant in the environment. Deposition of metals can degrade soil quality. Phytoremediation is environmental friendly and potentially affordable technology for the extraction of metals from the soil and Napier grass is found to be highly effective for the absorption of toxic metals form soil due to its idiosyncratic morphological and physiological characteristics. This paper aims to collate some particulars about heavy metals of Cr, Cu, Pb and Zn present in sediments of Gomti river and their treatment. The concentrations of various metals (Cr, Cu, Pb and Zn) were determined in recently deposited surface sediments of the Gomti river in the Lucknow urban area. Markedly elevated concentrations (milligrams per kilogram) of some of the metals, Cr (16.2 mg/Kg) Cu (23.45 mg/Kg), Pb (46.92 mg/Kg), and Zn (77.12 mg/Kg) were observed. Profiles of these metals across the Lucknow urban stretch show a progressive downstream increase due to additions from drainage networks discharging the urban effluents into the river. This study reveals that the urbanization process is associated with higher concentrations of heavy metals such asCu, Cr, Pb, and Zn in the Gomti river sediments. To keep the river clean for the future, it is strongly recommended that urban effluents should not be overlooked before their discharge into the river.