ADSORPTION OF CE(III) METAL IONS USING MAGNETITE-ALGINATE COMPOSITE CROSSLINKED WITH GLUTARALDEHYDE

• Main Author: Laylasafit, Kendra
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/70531
• Institution: Institut Teknologi Bandung

Cerium (Ce) is one of the rare earth metals with the highest abundance among its group in the form of mineral rocks. Cerium is widely used in the television manufacturing industry, ceramic industry and catalyst. However, its presence in the environment, especially water. Adsorption is an easy and effective separation method to reduce the amount of Ce(III) ions in wastewater. In this study, Magnetite-Alginate composite crosslinked with Glutaraldehyde (MAG) was developed. The synthesis of adsorbents begins with the manufacture of magnetite in Na-Alginate solution media until magnetite is coated by alginate. The resulting powder is then re-soaked in Na-Alginate solution and glutaraldehyde is added and the reaction temperature is maintained at 80? so that crosslinking between alginate chains occurs. The successfully synthesized MAG adsorbent was then characterized using Fourier Transform Infrared (FTIR), XRay Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS). Optimum adsorption parameters for adsorbing Ce(III) metal ions using batch method were achieved at pH 4, contact time 4 hours and adsorbent mass 0.05 grams. Then the adsorption process of Ce(III) ions is known to follow the Langmuir isotherm model with a maximum adsorption capacity (qm) of 37.73 mg g-1 and a pseudo second-order reaction kinetics model. Thermodynamic parameters yielded values of ?H = 20.239 kJ mol-1 and ?S = 172.798 J K-1 mol-1.