Int J Phytoremediation. 2014;16(3):275-84. doi: 10.1080/15226514.2013.773279.
The phytoremediation potential of three aquatic plants namely, water lettuce (Pistia stratioes), water hyacinth (Eichhornia crassipes), and water spinach (Ipomoea aquatica) for nitrate N and phosphorus from nutrient treated ground water was assessed. A total of twelve treatment combinations including four levels of nitrate (expressed as nitrate N 0, 20, 40, and 60 mg/l) and three levels of phosphorus (0, 20, and 40 mg/l) were treated for the total volume of 1 and 20 liters of water respectively, for Pistia stratiotes and Eichhornia crassipes. For Ipomoea aquatica ten treatment combinations with five levels of nitrate N (0, 10, 20, 40, and 50 mg/l) and two levels of phosphorus (0 and 5 mg/l) were treated to 3 liters of water. The design used was a two factor factorial with three replicates. Water was analyzed at weekly interval for nitrate N and phosphorus. Pistia stratiotes, Eichhornia crassipes and Ipomoea aquatica had the potential to remove nitrate N between 61.5-91.8%, 40-63.5%, and 29.3-75% during the period of six, three and three and weeks, respectively. In addition, 90-99%, 75-97.2%, and 75-83.3% of phosphorus was removed from water by Pistia stratiotes, Eichhornia crassipes and Ipomoea aquatica respectively, during the same period.
评估了三种水生植物，即水蕹菜（Pistia stratioes）、凤眼蓝（Eichhornia crassipes）和空心菜（Ipomoea aquatica）对含营养物地下水的硝酸盐氮和磷的植物修复潜力。共处理了 12 种处理组合，包括 4 个硝酸盐水平（以硝酸盐氮 0、20、40 和 60mg/L 表示）和 3 个磷水平（0、20 和 40mg/L），每种处理组合的总水量分别为 1 升和 20 升，用于水蕹菜和凤眼蓝。对于空心菜，使用了 10 种处理组合，5 个硝酸盐氮水平（0、10、20、40 和 50mg/L）和 2 个磷水平（0 和 5mg/L），处理水量为 3 升。设计采用两因素析因设计，有三个重复。每周分析一次水中的硝酸盐氮和磷。在 6、3 和 3 周的时间内，水蕹菜、凤眼蓝和空心菜分别有潜力去除 61.5-91.8%、40-63.5%和 29.3-75%的硝酸盐氮。此外，在同一时期，水蕹菜、凤眼蓝和空心菜分别去除了水中 90-99%、75-97.2%和 75-83.3%的磷。
