Effectiveness of Ni0.5Zn0.5Fe2O4 for the removal and preconcentration of Cr(VI), Mo(VI), V(V) and W(VI) oxyanions from water and wastewater samples
作者： Abbas Afkhami , Samira Aghajani , Milad Mohseni , Tayyebeh Madrakian
DOI: 10.1007/S13738-015-0675-Z
关键词:
摘要: Ni0.5Zn0.5Fe2O4 nanocomposite was synthesized and used for the removal preconcentration of Cr(VI), Mo(VI), V(V) W(VI) ions. The effect various parameters such as pH, amount adsorbent contact time on adsorption efficiency ions were studied. maximum occurred at pH 4.0 Cr(VI) 5.0 Mo(VI) V(V). Maximum capacity (qmax) estimated using Langmuir model 48.5, 38.8, 28.0 72.0 mg g−1 ions, respectively. adsorbed oxyanions then desorbed by NaOH solution. concentration in solution determined spectrophotometrically. Calibration curves linear range 0.7–150.0, 0.9–70.0, 2.0–50.0 1.0–40.0 ng mL−1 an initial sample 100 mL,
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