Journal of Chemistry / 2016 / Article / Fig 4

Research Article

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

Figure 4

Influence of pH on the adsorption capacities of Cr(III) (a) or Cr(VI) (b) onto kaolin. Note: the lowercase letters in figure above are the 5% significant level by using LSD method under the same Cr treatment, but under different pH (adsorption conditions:  mg·L−1 for Cr(III),  mg·L−1 for Cr(VI),  mL,  g, temperature = 25°C, and equilibrium time = 120 min).
(a)
(b)

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