Isotherms and Mass Transfer Modeling of the Adsorption of Copper Ions onto Iron-Activated Carbon Composite
نویسندگان
1 Department of Process Engineering, Applied Sciences, Kasdi Merbah University, Ouargla, 30000, ALGERİA
2 Department of Second Cycle, Higher School of Saharan Agriculture - El Oued, 39011, ALGERIA
3 Department of Process Engineering, Applied Sciences, Kasdi Merbah University, Ouargla, 30000, ALGERİA
doi
10.30492/ijcce.2025.2049516.6946چکیده
This study utilized a composite of iron-activated carbon derived from waste date. The adsorbent, made by mixing iron sulfate in a specific way, was examined using X-Ray Diffraction (XRD) and scanning electron microscopy (SEM). We used it to eliminate copper ions Cu(II) in pre-prepared solutions of copper sulfate. The equilibrium data were found to be better described by the Freundlich model with R2>0.99, and the energy of mean adsorption was E=3.53 kJ/mol adsorption kinetics were successfully fitted with a pseudo-second-order model. Results indicated that the film and pore diffusion coefficients ranged within a specific value10-10 cm2/s, suggesting that pore diffusion is the rate-limiting step. This study highlights the importance of both external mass transfer and intra-particle diffusion in the adsorption of copper.
