Activate CoMo/γ-Al2O3 Nano Composite and Use It to Remove Rhodamine B Dye from Aqueous Solution
نویسندگان
1 Department of Chemistry, College of Science, Diyala University, Baquba. Diyala, Iraq
2 Department of Chemistry, College of Science, Diyala University, Baquba. Diyala, Iraq
doi
10.22052/JNS.2026.01.041چکیده
The (CoMo/γ-Al2O3) was used for the adsorption of Rhodamine B from aqeous solution . Spent CoMo/γ-Al2O3 hydrodesulfurization catalyst was regevenated using n-hexane to remove the soluble coke and the oxalic acid to remove the foulant elements and insoluble coke by calcinating it at under the temperature of 500 οC for 4 hr. And finally, Rhodamine B was separated from its aquoues solution via the adsorption batch method with varying concentrations of Rhodamine B. They are characterized by FTIR, XRD, FESEM techniques also (BET) techniques was used for mesure the surface area of the nano catalyst.The results shows that the best conditions for adsorption were (pH 2) at a (0.25 g/L) dose with in (40) minutes of contact time. The thermodynamic studies showed that the process is endothermic and spontaneous. The kinetic was described by pseudo-second-order. The equilibrium adsorption data fitted the Freundlich isotherm well.
