| Abstrakt: |
This study was conducted to investigate wastewater phytoremediation under different conditions. We examined the potential of Lemna minor and Pistia stratiotes in two proposed models in natural and artificial plant environment conditions and in previous studies (laboratory pilot-scale study). Before and after treatment, heavy metals, physical and chemical characteristics of wastewater and removal efficiency were analyzed. The results showed that in artificial conditions, Lemna minor reduced pollutants with efficiencies ranging from 90.3 to 98.06% for biological oxygen demand, chemical oxygen demand, total dissolved solids, salinity, conductivity, turbidity, total phosphorus, and total nitrogen, with an increase in saturated oxygen concentration of 82.9%. In natural conditions, the reduction efficiencies ranged from 55.9 to 89.9%, with an increase in saturated oxygen concentration of 67.2%. Conversely, in artificial conditions, Pistia stratiotes achieved removal efficiencies ranging from 93.2 to 98.9%, with an increase in saturated oxygen concentration of 83.6%. Efficiencies ranged from 70.1 to 91.9% in natural conditions. Similarly, the percentages of metals removal by Pistia stratiotes ranged from 71.4 to 97.8% for Fe, Ni, Pb, Cd, Zn, Co, and Cu in artificial conditions and from 37.9 to 79.8% in natural conditions. In addition, metal removal percentages by Lemna minor ranged from 89.6 to 96.4% in artificial conditions and from 27.9 to 60.1% in natural conditions. [ABSTRACT FROM AUTHOR] |
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