., Buhani and ., Suharso and Rilyanti, Mita and Sari, Miranda and ., Sumadi (2021) Removal of Cd(II) ions in solution by activated carbon from palm oil shells modified with magnetite. Desalination and Water Treatment, 218 (1). pp. 352-362. ISSN 19443994, 19443986
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Abstract
Modification of palm oil shells carbon coated by Fe3O4 (magnetite) particle (PPAC-PMnPs) as adsorbent to remove Cd(II) ions from solution was investigated using batch method. The palm oil shells carbon activated (PPAC-P) and PPAC-PMnPs adsorbent were identified by several instruments as infrared (IR) spectrometer to identify the functional groups, SEM-EDX (Scanning Electron Microscope and Energy Dispersive X-ray Spectroscopy) to investigate element constituents and surface morphology, Brunauer-Emmett-Teller analyzer to determine surface areas, and XRD (X-ray diffraction) to analyze crystallization level of the adsorbents. Identification of Cd(II) ion concentrations in the solutions of experiments was determined by an Atomic absorption spectrometer (AAS). The adsorption process of Cd(II) ion by the PPAC-P and PPAC-PMnPs adsorbents was optimum at pH 6 and 7 with a contact time of 90 minutes. The adsorption kinetics of Cd(II) ions on PPAC-P and PPAC-MnPs has a tendency to follow the pseudo second order kinetics model and Freundlich adsorption isotherm model with a correlation coefficient (R2) > 0.99. These facts show that adsorption process between the Cd(II) ion and PPAC or PPAC-PMnPs adsorbent runs as heterogeneous adsorption. The PPAC-PMnPs adsorbent can be used repeatedly with % Cd(II) ion adsorbed almost constant for 4 repetition cycles with absorption efficiency > 80%.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia |
| Depositing User: | BUHANI |
| Date Deposited: | 20 May 2021 07:34 |
| Last Modified: | 20 May 2021 07:34 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/30284 |
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