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FSCH.SE176126

ADSORPTION STUDIES FOR REMOVAL OF COPPER METAL IONS FROM AQUEOUS SAMPLES USING MAGNETIC NANOPARTICLES
Layth Imad Abd Ali
Department of Chemistry, Faculty of Sceince and Health, Koya University
http://koyauniversity.org

Abstract:
Fe3O4 magnetic nanoparticles (MNPs) were synthesized by co-precipitation method. The Fe3O4 MNPs were characterized using FT-IR, surface adsorption analysis, FE-SEM, XRD, and VSM. The structural characterization showed an average nanoparticle size of 12 nm. The synthesized Fe3O4 MNPs were tested for the treatment of synthetic aqueous solutions contaminated by Cu(II) ions. Various factors influencing the adsorption of Cu(II), such as pH, contact time, Adsorbent dosage and temperature were studied to optimize the operational condition for the use of Fe3O4 nanoparticles as adsorbent. Experimental results show that pH 6 is the optimum value for metal removal and the adsorption capacity of Fe3O4 nanoparticles for Cu(II) is 16.28 mg/g. Adsorption kinetic rates were found to be fast; total equilibrium was achieved after 180 min. Kinetic experimental data fitted very well the pseudo-second order equation and the value of adsorption rate constants was calculated. The equilibrium isotherms were evaluated in terms of maximum adsorption capacity and adsorption affinity by the application of Langmuir and Freundlich equations. Results indicate that the Langmuir model fits adsorption isotherm data better than the Freundlich model.


KeywordsFe3O4 magnetic nanoparticles; Co-precipitation method; Copper metal ions; Kinetic adsorption; Thermodynamic adsorption

Date: 15/5/2017
Place: Faculty of Sceince and Health/ Hall 6 - chemistry Dept.
Ċ
Caroline Yousif Daniel,
Sep 25, 2017, 6:44 AM