Potential of mosquito fern (Azolla caroliniana Willd.) plants as a biofilter for cadmium removal from wastewater

摘要

The aquatic vascular plant Mosquito Fern (Azolla Caroliania Willd.) was investigated asa potential biological filter for removal of Cd from wastewater. Mosquito Fern plants were grown in and harvested weekly from 0.10 M Hoagland nutrient solutions containing 0.01, 0.04, and 1.03 mug Cd mL~(-1) or 0.50 M Hoagland nutrient solutions containing 0.02, 1.0, and 9.14 mug Cd mL~(-1). Dry weights of plants significantly increased when exposed to all three Cd concentrations in 0.10 M Hoagland solution through week three then decreased thereafter.