ADSORPTION OF LA(III) METAL IONS USING MAGNETITE-ALGINATE COMPOSITE CROSSLINKED WITH GLUTARALDEHYDE
Rare earth elements (REE) are increasingly being used in various industrial fields. Lanthanum is one of REE that is widely used as catalysts in the petroleum cracking, high quality optics, batteries in hybrid cars, and ceramic industry. With the demand increment for lanthanum, it is necessary to pre...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/71461 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Rare earth elements (REE) are increasingly being used in various industrial fields. Lanthanum is one of REE that is widely used as catalysts in the petroleum cracking, high quality optics, batteries in hybrid cars, and ceramic industry. With the demand increment for lanthanum, it is necessary to prevent pollution due to lanthanum waste. In this study, a composite based on alginate with a magnetite core and glutaraldehyde as a crosslinker has been prepared. The magnetized alginates crosslinked to glutaraldehyde (MAG) used as an adsorben to adsorb La(III) ions. The synthesized MAG composite adsorbents were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), zeta potential, and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS). The adsorption of La(III) ions using MAG composite adsorbents based on batch method reached its optimum conditions at pH 4, contact time for 60 minutes, and adsorben mass of 0,05 grams. The adsorption process of La(III) follows the Langmuir isotherm model with a maximum adsorption capacity (qm) of 27,93 mg.g-1 and a pseudo second-order reaction kinetics model. The adsorption of La(III) is spontaneous with ?S = 197,615 J K-1 mol-1 and ?H = 30,305 kJ mol-1. |
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