PHYTOREMEDIATION OF METALS (LEAD, COPPER, ZINC, CADMIUM & CHROMIUM) USING AQUATIC MACROPHYTE, WATER HYACINTH (EICHHORNIA CRASSIPES)

Volume 20 No 22 (2022)

Merin Sajitha D and D. Helen

DOI: 10.48047/nq.2022.20.22.NQ10459

Abstract

The phytoremediation potential of water hyacinth (Eichhornia crassipes) was investigated for several metals. The plants were cultivated for a period of 50 days in phytoremediation tanks containing solutions with concentrations of 10, 20, and 30 ppm for each of the following metals: Lead (Pb), Copper (Cu), Zinc (Zn), Cadmium (Cd), and Chromium (Cr). The percentage removal of these metals by the plants was determined using atomic absorption spectroscopy (AAS), and standard deviations were calculated using Microsoft Excel, 2016. The results indicated that the order of metal removal byEichhornia crassipes(E. crassipes) was Cu > Zn > Pb > Cd > Cr. The efficiency of phytoremediation with Eichhornia crassipes depended on factors such as contact time, metal concentration, and the specific type of metal. These findings suggest that E. crassipes is an effective accumulator plant for the phytoremediation of these heavy metals.

Keywords

Phytoremediation, Heavy metals, Water hyacinth (Eichhornia crassipes)

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