Modeling and optimization of Direct Red 16 adsorption from aqueous solutions using nanocomposite of MnFe2O4/MWCNTs: RSM-CCRD model

Response surface modeling based on based on central composite rotatable design was applied for the removal of Direct Red 16 from aqueous solution using MnFe2O4/MWCNTs as a nanoadsorbent. The maximum adsorption capacity (285.56 mg/g) were obtained under optimal conditions including initial concentration of 89.95 mg/L, adsorption dosage of 3 mg, temperature of 30 °C and contact time of 158.56 min.310