3. Producción

Browse

Settings

Subject: search.filters.subject.Phragmites australis

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Removal of heavy metals using a wetland batch system with carrizo (Phragmites australis (Cav.) Trin. ex Steud.): a laboratory assessment
    (Elsevier, 2021-08-16)
    One of the greatest environmental issues related to the development of the mining activity is the generation of Acid Mine Drainage (AMD). This effluent generated by active and abandoned mines in Peru produces multiple discussions about the role of the industry for a sustainable development. Many methods have been developed for AMD treatment, being wetlands a good option for heavy metal removal. In this sense, removal of heavy metal by using laboratory constructed wetlands with phragmites australis (cav.) trin. ex steud. was studied. During a 9-day period the variation of different physicochemical parameters and heavy metals concentrations was recorded. The pH decreased to a constant value of 8.24 after the sixth day. The electrical conductivity presented a slight variation from 1 to 1.33 μS cm−1 on the ninth day. Moreover, fluctuating values of Dissolved Oxygen and Turbidity were observed. A reduction between 69% and 93% of ammonia nitrogen (NH3-N) was registered. Cu concentration was reduced in 68% and 87%; Zn concentrations dropped in 53% and 95%; and Pb was reduced in 20% and 55%. It was concluded that phragmites australis (cav.) trin. ex steud. can be an alternative in the treatment of the contaminants produced by AMD.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Evaluation of Heavy Metal Removal Using Phragmites australis (Cav.) and Schoenoplectus californicus (C.A. Mey.): A Comparison of the Dry Ashing and Wet Digestion Method
    (Iranian Chemical Society, 2023-01-01)
    This study presents the evaluation of heavy metal removal using Phragmites australis (Cav.) and Schoenoplectus californicus (C.A. Mey.) in a laboratory wetland test (10-days). Two digestion methods: Dry Ashing and Wet Digestion to determine the final concentration of heavy metal in the roots and stems of both plants were used. The final concentration of Cu (5.14 φg g-1), Zn (27.34 φg g-1), and Fe (107.91 φg g-1) were determined in the roots of the Schoenoplectus californicus (C.A. Mey.). While in its stems the highest concentration of Pb (1.69 φg g-1) was founded. In Phragmites australis (Cav.) the high concentrations of Cu (2.44 φg g-1), Zn (5.22 φg g-1), and Fe (28.10 φg g-1) are found in the roots and Pb (0.70 φg g-1) in the stems. Regardless of the plants studied, the Wet Digestion method was the most suitable pretreatment method for determining Cu and Fe concentrations, while the Dry Ashing method was the best for Zn and Pb.