Abstract
The main goal of wastewater treatment is to allow human and industrial effluents to be disposed of without danger to human health or negative impacts to the natural environment. The aim of this study was to evaluate the use of some aquatic plants in terms of the removal of certain chemicals as part of such wastewater treatment. The potential use of the aquatic plant Lemna minor for wastewater purification was thus examined, with Lead, Nickel, Copper, and Cadmium selected as target impurities. The effect of Lemna minor plants on the occurrence of these metals in wastewater for a period of two weeks was thus examined. The results showed that the presence of the plants enhanced the removal of heavy metals: the removal percentage of Lead in the presence of Lemna minor was higher than in the tank with no Lemna minor, with rates of 73% and 47%. In addition, in the presence of Lemna minor, the removal efficiency of Nickel was about 47%, higher than that that without Lemna minor. These results suggest that this plant may decrease the concentrations of some heavy metals and consequently decrease the costs of treating water to remove such metals.
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