POTENSI TANAMAN AZOLLA (Azolla pinnata) SEBAGAI FITOREMEDIATOR ION TIMBAL (II), ION KADMIUM (II) DAN ION KROMIUM (VI)

Abstract

The ability of azolla (Azolla pinnata) was tested as phytoremediator for lead, cadmium and chromium in simulation solution. The plants was grown in a glass reactor containing 25 mg/L of lead, cadmium and chromium solution of time exposure 0, 3, 6, 12 and 15 days. Lead, cadmium and chromium content of the simulation solution and plants were analysed before and after treatment using Atomic Absorption Spektrophotometer and UV-Vis spectrophotometer. Lead, cadmium and chromium content in plant tissues increases as the length of time exposure. The highest percent absorption efficiency for lead ion is 58,14% (day 12), for cadmium ion is 40,32% (day 12) and for chromium ion is 32,55% (day 6). The values of bioconcentration factor (BCF) obtained for Pb, Cd, Cr were greater than 1, which indicated for azolla plant is able to be used as a Pb, Cd and Cr ions phytoremediator.