Journal of Chemistry / 2016 / Article / Fig 1

Research Article

Effects of Cu(II) on the Adsorption Behaviors of Cr(III) and Cr(VI) onto Kaolin

Figure 1

The Cr(III) (a) or Cr(VI) (b) adsorption kinetics onto kaolin in the absence and presence of Cu(II). The ▲ and ◆ are the measured data. The dashed and solid curves are fittings using pseudofirst-order and second-order models, respectively (adsorption conditions: for Cr(III) = 300 mg·L−1, for Cr(VI) and Cu(II) = 200 mg·L−1, pH = 4.5, and temperature = 25°C).

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