Removal of heavy metals from polluted waters by Hydrodictyon reticulatum (Linn.) lagerheim

摘要: Abstract A preliminary survey of a pond in Unnao District, India, for heavy metal pollution indicated that the water was contaminated with manganese and iron at levels many times higher than permissible limits. The supported growth various aquatic plants luxuriant Hydrodictyon reticulatum , which dominated plant community. Under natural conditions, alga showed an unusually high content metals, including copper, cadmium, chromium lead. accumulated very amounts other especially manganese, although concentration quite low. simulated maximum uptake bioaccumulation ions occurred within 48 h. At phytotoxic concentrations, cadmium inhibited biomass production, reduced chlorophyll, carotenoids protein contents alga. pH-dependent, under acidic conditions. dominance H. such environment may help remove relatively large loads metals from polluted waters.