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Implication of Electrostatic Forces on the Adsorption Capacity of a Modified Brick for the Removal of Divalent Cations from Water

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Figure

Figure 1. EDS spectrum of an iron-rich particle targeted on the surface of ferrihy-drite-coated brick and shown in Figure 2
Figure 2. SEM micrograph of ferrihydrite-coated (pre-activated) brick. And EDS analysis of this modified brick within an across-section of this sample, showing the line scannings for Si, Al, Fe, and Na
Figure 3. (a) Variation with time of the amount of lead(II) adsorbed onto modified-brick grains (with 0.7 - 1.0 mm sizes) at different temperatures ranging from 20˚C to 35˚C; (b) Ln(KD) or Ln(Cads./Ce) plotted against 1/T (˚K), where KD represents the dist
Table 1. Thermodynamic parameters obtained for the adsorption removal of divalent metals (Cd2+, Cu2+, Pb2+, Sr2+, and Zn2+) by modified-brick grains (with 0.7 - 1.0 µm sizes) from water at 298˚K
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