Phytoremediation of waste dumping site soil and landfill leachate by using cattail (Typha latifolia)

ABSTRACTIn this study, cattail (Typha latifolia) was used to remove Na+ and Cl− from polluted soil (PS) in a solid waste open dumping site. Hydroponic system was also evaluated to remove Na+ and Cl− from landfill leachate. The results indicated that the cattail grown in PS had higher biomass yield of 44.4 ± 3.29 g compared to that of control (35.3 ± 4.28 g). Nitrogen and phosphorous contents of cattails grown in PS were also higher than that of control plants, and the electrical conductivity of PS significantly decreased from 245 ± 1.40 to 51.9 ± 9.30 ms/m over the 5-week experimental duration. Na+ and Cl− contents from cattail grown on PS were 10.8 ± 1.85 and 64.7 ± 9.15 g/kg biomass, respectively. For cattails grown hydroponically in water containing leachate, nitrogen and phosphorous accumulation was 51.1 ± 5.94 and 9.32 ± 3.22 g/kg biomass, respectively. The corresponding biomass yield of these cattails was 13.5 ± 1.29 g at the end of 5 weeks. In addition, the Na+ and Cl− accumulation of 55.5 ± 4.82 a...