Comparative Study Of The Phytoremediation Capacity Of Hydrilla Verticillata In Heavy Metal Contaminated Water

Abstract

Hydrilla verticillata is used to remove heavy metals (Pb, Cr, Cd, Ni and As) in polluted water, and accumulation of it in the roots and shoots were examined. H.verticillata were cultured and harvested after 60 days. The aim of this study is to analyse removal efficiency (%) of heavy metals in water, and evaluating the uptake by H.verticillata, bioconcentration factor (BCF) and translocation factor (TF). The highest removal efficiency for H.verticillata was 64.5% for Cd. This plant showed heavy metal concentrations higher in the roots than shoots that suggesting the metals were bound in the root and partially transported to the shoot.