Ramadhan, Diaz Fajar (2024) Sintesis Zeolit dari Fly Ash dan Analisis Pengaruh Penambahan Surfaktan HDTMA terhadap Band Gap Zeolit Sebagai Aplikasi Fotokatalis Degradasi Formaldehid. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Fly ash merupakan limbah padat yang dihasilkan dari PLTU dan terus meningkat sejalan dengan penggunaan batu bara. Pemanfaatan fly ash untuk disintesis menjadi zeolit dapat mengurangi limbah tersebut. Zeolit memiliki manfaat dalam aktivitas fotokatalitik. Penelitian ini bertujuan untuk menganalisis pengaruh rasio NaOH/hasil leaching fly ash terhadap sintesis zeolit, pengaruh temperatur hidrothermal, pengaruh surfaktan kationik terhadap pembentukan dan karakteristik pori zeolit berbasis fly ash, serta aktivitas fotokatalitiknya. Metode penelitian meliputi preparasi fly ash dengan uji XRF dan XRD, sintesis zeolit dengan proses hidrothermal selama 5 jam pada suhu 100°C dan 120°C, dan modifikasi zeolit dengan surfaktan HDTMA 0,3 M. Karakterisasi dilakukan dengan uji SEM, EDX, XRD, spektrofotometri UV-Vis, dan uji fotokatalitik terhadap formaldehid. Hasil penelitian menunjukkan bahwa pada suhu 100°C dan 1200C menghasilkan zeolit ZK-14. Penambahan surfaktan HDTMA tidak memengaruhi band gap zeolite secara signifikan. Uji XRD menunjukkan peningkatan kestabilan fase dan penurunan pengotor. Hasil SEM memperlihatkan morfologi spherical. Uji UV-Vis menunjukkan band gap ZMS berkisar 4,14 eV hingga 4,19 eV. Dengan demikian dapat zeolite merupakan material insulator bukan semi konduktor dimana tidak bisa beraktivitas secara fotokatalitik melainkan adsorbs. Uji fotokatalitik menunjukkan adsorbsi formaldehid dengan persentase adsorbsi 10,27%, 15,92%, 12,85%, dan 17,86% pada berbagai kondisi.
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Fly ash is a solid waste generated from coal-fired power plants (PLTU) and continues to increase with the use of coal. Utilizing fly ash to synthesize zeolites can reduce this waste. Zeolites have benefits in photocatalytic activities. This research aims to analyze the effect of the NaOH/leached fly ash ratio on zeolite synthesis, the effect of hydrothermal temperature, the effect of cationic surfactants on the formation and pore characteristics of fly ash-based zeolites, and their photocatalytic activity. The research method includes the preparation of fly ash with XRF and XRD tests, zeolite synthesis using the hydrothermal process for 5 hours at temperatures of 100°C and 120°C, and zeolite modification with 0.3 M HDTMA surfactant. Characterization was conducted using SEM, EDX, XRD, UV-Vis spectrophotometry, and photocatalytic tests on formaldehyde. The research results show that at temperatures of 100°C and 120°C, ZK-14 zeolite is produced. The addition of HDTMA surfactant does not significantly affect the zeolite's band gap. XRD tests show increased phase stability and reduced impurities. SEM results reveal spherical morphology. UV-Vis tests indicate that the ZMS band gap ranges from 4.14 eV to 4.19 eV, suggesting that zeolite is an insulator material, not a semiconductor, and thus cannot perform photocatalytic activities but rather adsorbs. Photocatalytic tests show formaldehyde adsorption with adsorption percentages of 10.27%, 15.92%, 12.85%, and 17.86% under various conditions.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Fly Ash, surfaktan HDTMA, zeolit Fly Ash, HDTMA surfactant, zeolite |
| Subjects: | Q Science > QD Chemistry > QD501 Catalysis. Catalysts. Q Science > QD Chemistry > QD716 Photocatalysis. |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Diaz Fajar Ramadhan |
| Date Deposited: | 09 Aug 2024 02:51 |
| Last Modified: | 09 Aug 2024 02:51 |
| URI: | http://repository.its.ac.id/id/eprint/113021 |
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