The authors regret that there were some errors in the text of their original paper and apologise for any inconvenience caused. The corrected text is given below.

Structure properties

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… It was concluded that two clear peaks at 1,382 and 580 cm−1 appeared in fresh Y-Al2, which is respectively attributed to the vibration of Y-OH group and the overlap of M (metal)-O (Pavel et al. 2011). Nevertheless, the peaks at 1,382 cm−1 were weakened and shifted to 1,216 and 1,156 cm−1 after adsorption of As(V), which demonstrates that hydroxyl group on the surface of mesoporous Y-Al binary oxide was reduced and involved in the adsorption process. Simultaneously, a new band appeared at ca. 830 cm−1 after adsorption of As(V) (Curves b, c, d and e of Figure 2).

Page 874

As previously reported, the value of PZC was ca. 8.86 (Han et al. 2016a), which is higher compared to that of pure alumina (8.3) due to the loading of (yttrium oxide) alkaline oxide (Tripathy & Raichur 2008).

Adsorption isotherm

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The adsorption isotherm of the adsorbent mesoporous Y-Al binary oxide was investigated at pH 6.6 ± 0.1 and the corresponding results are presented in Figure S1 (available with the online version of this paper).

Thermodynamic study

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The value of ΔH0 and ΔS0 are determined by the slope and intercept of the linear plot of Ka vs. 1/T which is illustrated in Figure S2. And the value of all thermodynamic parameters are listed in Table S3. (Figure S2 and Table S3 are available with the online version of this paper.)