Tehubijuluw, Hellna (2021) Pemanfaatan Limbah Bauksit (Red mud) Menjadi ZSM-5 Hierarki Untuk Menghilangkan Metilen Biru Dalam Air. Doctoral thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Limbah bauksit (Red mud) Pulau Bintan Kepulauan Riau telah dimanfaatkan untuk mensintesis ZSM-5 hierarki. Tujuan dari penelitian ini adalah menghasilkan material ZSM-5 hierarki yang berfungsi sebagai adsorben dengan metode hidrotermal dan sebagai fotokatalis untuk menghilangkan (MB) dalam air. ZSM-5 hierarki disintesis menggunakan metode hidrotermal dengan 2 tahap kristalisasi yaitu suhu 80 C pada waktu 6, 9, dan 24 jam dan suhu 150 C pada waktu 24 jam. Hasil penelitian menunjukkan bahwa ZSM-5 hierarki 6 jam mempunyai luas permukaan dan volume mesopori intra-partikel masing-masing sebesar 734 m2/g dan 0,58 cm3/g. Kinetika adsorpsi ZSM-5 hierarki 6 jam pada MB mengikuti model orde satu. Parameter termodinamika adsorpsi G, H, dan S masing-masing -2,69; -4,04; -5,38 kJmol-1, 38,06 kJmol-1, dan 0,13 kJ/mol.K. Pengaruh pH terhadap fotokatalisis MB dengan removal sebesar 98,38 %. Kinetika laju reaksi fotokatalisis MB oleh ZnO/ZSM-5 hierarki 6 jam mengikuti orde satu dengan nilai R2 > 0,957. Fotokatalisis MB pada ZnO/ZSM-5 hierarki 6 jam mengikuti model kinetika Langmuir – Hinshelwood (L-H) dengan nilai R2 = 0,989.
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Bauxite waste (Red Mud) from Bintan Island, Riau Archipelago used to synthesize hierarchical ZSM-5. The purpose of this research is to produce a hierarchical ZSM-5 material that functions as an adsorbent by the hydrothermal method and as a photocatalyst material for removing methylene blue (MB) in water. ZSM-5 hierarchical was synthesized using the hydrothermal method with two stages of crystallization, namely a temperature of 80 C at 6, 9, and 24h and a temperature of 150 C at 24h. The results showed that the hierarchical ZSM-5_6h had a large mesoporous surface area and volume of 734 m2/g and 0.58 cm3/g, respectively. The hierarchical ZSM-5_6h adsorption kinetics on MB followed a pseudo-first-order model. The adsorption thermodynamic parameters such as G, H, and S were -2.69 kJmol-1 -4,04; -5,38 kJmol-, 38.06 kJmol-1, and 0.13 kJ/mol.K, respectively. The effect of pH on MB photocatalysis with removal is 98.38%. The kinetics of the MB photocatalysis reaction rate by ZnO/ZSM-5_6h hierarchical followed the first order with R2 > 0.957. MB photocatalysis on ZnO/ZSM-5_6h hierarchical followed the Langmuir – Hinshelwood (L-H) kinetic model with R2 = 0.989.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | Kata kunci: adsorpsi, fotokatalisis, MB, ZSM-5 hierarki, ZnO Keywords: adsorption, photocatalyst, methylene blue, hierarchical ZSM-5, ZnO |
| Subjects: | Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD181.S6 A4 Aluminum silicates Q Science > QD Chemistry > QD716 Photocatalysis. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47001-(S3) PhD Thesis |
| Depositing User: | Hellna Tehubijuluw |
| Date Deposited: | 02 Sep 2021 05:37 |
| Last Modified: | 02 Sep 2021 05:37 |
| URI: | http://repository.its.ac.id/id/eprint/91595 |
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