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    Schoenoplectus californicus as potential remover of metal elements from mine effluents: A laboratory assessment
    (Wiley, 2022-11-30)
    Acid mine drainage (AMD) is one of the most significant environmental challenges facing the mining industry worldwide. For this reason, many methods for AMD treatment are developed, being wetlands a good option for metal elements removal from these mining effluents. The efficiency of Peruvian native plants such as Schoenoplectus californicus ( S. californicus ) to remove metal elements in effluents through artificial wetlands is studied. Batch removal tests are carried out with different effluents containing copper, zinc, lead, and iron. For iron‐metal binary effluents, copper, zinc, and lead are removed by 82%, 75%, and 88%; while in the effluent containing all metals, the removal rate is 90% and 92% for copper and lead, respectively. According to the preliminary results, it is concluded that iron interferes more in the removal of zinc and lead than in copper from binary effluents. The use of S. californicus turns out to be an efficient, attractive, and economical alternative for the treatment of effluents contaminated with copper, zinc, lead, and iron.
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    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.