Efficient Removal of As from Industrial Wastewater by Nanocomposite MnFe<sub>2</sub>O<sub>4</sub>@Fe-UiO-67.

Figure 7 a shows the Langmuir model of the adsorbent at different temperatures, which shows a decreasing trend in the adsorption capacity (q e ) with increasing reaction temperatures (298 K–318 K), indicating that the adsorbent has the best adsorption performance at room temperature (298 K).

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