Experimental set 2 consisted of only T. latifolia
plants kept at a density of 40 plants m . In 3rd set, each of P.
australis and T. latifolia were kept at a density of 20 plants m
2
.
Experimental set 4, called as reference set, was kept without any
plant and was used to determine the removal of heavy metals
through natural precipitation. In order to minimize the error five
wastewater samples have been collected separately as replicate
samples from each station i.e. AG, HG, RPG, MG and RG station and used for conducting the experiment.
.