Fig. 5. Effect of contact time associated with the initial concentration (mg kg−1) of Cr(vi) and temperature (K) on (a and b) the Cr(vi) adsorption capacity (mg g−1) and (c and d) the removal efficiency (%) of the RBC-TiO2@C nanocomposite (dosage@0.8 g L−1; pH 4; 288 K temperature; 100 mg L−1 initial concentration; 150 rpm shaking speed).
