Mohd Adil Deva* and Sushil Manderia
The present study was done from the month of January to June in 2019. The aim of this study was to investigate the impact of Domestic wastewater (DWW) on the growth of Phragmites karka and Chrysopogon zizanioides in Constructed wetland and phytoaccumulation of heavy metals. The fresh weight, dry weight, moisture content, relative growth rate and absolute growth rate of plants were calculated by Classical and functional methods. The concentrations of metals were determined by AAS. The wastewater contained higher concentration of Fe and Zn in comparison to Cu and Pb and calculated concentration of Heavy metals in DWW ranged from 2.45 ± 0.01 to 2.92 ± 0.05 for Fe; 70.73 ± 1.2 µgL-1 to 88.33 ± 0.58 µgL-1 for Zn; 0.62±0.01 µgL-1 to 1.09±0.01µgL-1 for Pb and 1.83±0.03 µgL-1 to 2.6±0.12 µgL-1 for Cu. C. zizanioides produced huge amount of biomass in comparison to P. karka. Both plants played an important role in scavenging the metals from the wastewater. The accumulations of metals increased with the increases in dry mass. From that experiment, it could be suggested that application of both the plants in constructed wetlands for accumulation of heavy metals is a viable option for reclamation of toxicity of metals.
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