In this study, two aquatic macrophytes namely, Azolla pinnata and Lemna minor are floating plants were obtained from Agric.Microbial Dept., Soils, Water and Environment Research Institute (SWERI), Agric.Res.Center (ARC), Giza, Egypt and used to some heavy metal such as Iron, Zinc and lead This study reported the ability of two aquatic plants (A.pinnata and L. minor) to remove Iron, Zinc and lead f...