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(a) The effect of pH on the surface loads of adsorbents; (b) The effect of pH on the efficiency of the adsorption process (temperature 25 °C, contact time 60 min, adsorbent dose 1.25 g/L, CV dye concentration 10 mg/L), and (c) the mechanism of the CV dye adsorption process in the acidic and alkaline pH ranges.
