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Farideh Dehghani,Saeedeh Hashemian,Ali Shibani 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.48 No.-
MFe2O4 (M = Co, Ni and Zn) ferrite spinels were prepared and calcinated at 100, 200 and 300 C. Theferrite spinels were characterized by FTIR, XRD, SEM and TEM. The CoFe2O4, ZnFe2O4 and NiFe2O4 ferritescalcinated at 300 C had particles size of 40, 32 and 24 nm, respectively. The adsorption of bromo phenolred (BPR) by ferrite spinels was studied. The results showed that adsorption capability of nano particleswas as follows: ZnFe2O4< CoFe2O4< NiFe2O4. The effect of parameters such as contact time and pH onthe adsorption of BPR was investigated. The adsorption of BPR was followed by pseudo-second-orderkinetic model. Thermodynamic results revealed that the adsorption of BPR onto nano ferrite spinels wasendothermic and spontaneously processed. Both Langmuir and Freundlich isotherm models foradsorption of BPR werefitted by experimental data.