Retnaningtyas, Aprilia Yasinta and Hidayat, Roziq Rahadian (2017) Pengaruh PH Dan Konsentrasi Pada Proses Pengeringan Koloid Silika Menggunakan Flame Spray Combustor. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Spray Drying banyak diaplikasikan dibidang industri untuk mengeringkan material karena memiliki berbagai keuntungan diantaranya mampu menghasilkan partikel hingga ukuran nanometer, proses kontinyu, kemurnian serta kristalinitas produk yang tinggi dan energi yang dibutuhkan lebih murah. Pada penelitian ini metode yang kami gunakan dalam proses pengeringan koloid silika yaitu Flame Spray Combustor. Penelitian ini memiliki tujuan untuk mensintesa partikel silika dari waterglass dan kemudian mengetahui pengaruh pH dan konsentrasi pada proses pengeringan silika menggunakan Flame Spray Combustor. Analisa SEM (Scanning Electromagnetic Microscope), dan XRD (X-Ray Diffraction), dilakukan untuk mengetahui morfologi, kristalinitas, dan ukuran dari partikel yang telah diperoleh. Untuk mengetahui distribusi ukuran partikel koloid silika digunakan analisa Particle Size Analyzer (PSA). Sedangkan untuk mengetahui luas permukaan partikel digunakan analisa BET (Brunauer – Emmet – Teller). Hasil penelitian ini didapatkan bahwa distribusi koloid silika polydisperse ditandai dengan adanya diameter koloid yang beragam. Pada pH 8 hingga 10 diameter partikel silika meningkat seiring dengan meningkatnya pH dan pada pH 11 diameter partikel silika menurun. Semakin tinggi konsentrasi semakin besar diameter partikel silika yang dihasilkan. Morfologi dari silika sendiri berbentuk bulat kecil. Silika memiliki struktur amorf sehingga silika dapat digunakan sebagai material komposit karena tidak mempengaruhi material utama. Semakin tinggi pH dan konsentrasi semakin kecil luas permukaan partikel silika yang dihasilkan. Sedangkan semakin tinggi pH dan konsentrasi semakin besar diameter pori partikel silika yang dihasilkan.
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Spray drying widely applied in industry for drying the material because it has many advantages including capable to produce particle up to nanometer size, having a continuous process, high purity and cristallinity product and less energy consumed. The research’s method that we used in drying process of colloidal silica is Flame Spray Combustor. This research has the objective to synthesize particles of silica from waterglass and then determine the effect of pH and concentration of precursor solution on drying process of colloidal silica using Flame Spray Combustor. Major equipment used in this experiment are an ultrasonic nebulizer, burners and electrostatic precipitators. Analysis of SEM (Scanning Electromagnetic Microscope), and XRD (X-Ray Diffraction), was conducted to determine the morphology, crystallinity, and size of the particles that have been obtained. While Particle Size Analyzer was conducted to determine particle size distribution of colloidal silica and particle’s surface area. Morphology of silica is small spherical. The results of this study found that the distribution of colloidal silica are polydisperse characterized by their varying sizes. At pH 8 to 10 the size of silica particles increases with increasing pH, and at pH 11 the size of silica particles decreases. The higher concentration of solution, the larger size of silica particles produces. Silica has an amorphous structure that silica can be used as a composite material because it does not affect the main material. The higher pH and concentration, the smaller surface area of silica particles produced. Meanwhile, the greater pH and concentration, the greater pore size of silica particles produced.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Flame Spray Combustor, Waterglass, Silika, Silica |
| Subjects: | T Technology > TP Chemical technology T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | APRILIA YASINTA RETNANINGTYAS |
| Date Deposited: | 12 Apr 2017 02:37 |
| Last Modified: | 08 Mar 2019 03:14 |
| URI: | http://repository.its.ac.id/id/eprint/3285 |
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