GHOFFAR, FADHIL and RAMADHAN, HAPPY (2016) SINTESA PARTIKEL SILIKA DARI NATRIUM SILIKA DI DAERAH ANODA SEL ELEKTROKIMIA. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk melakukan sintesis silika
dari water glass (natrium silika) dengan metode elektrokimia dan
untuk mengetahui karakteristik partikel silika yang dihasilkan.
Penelitian terdiri dari tiga tahapan, yaitu pembuatan silika,
pengeringan serta uji karakterisasi produk yang dihasilkan. Larutan
natrium silika dimasukkan ke dalam wadah yang telah dirangkai
menjadi dua bagian (daerah anoda dan daerah katoda) dimana
membran kation sebagai pembatas diantara dua bagian tersebut. Di
daerah anoda dipenuhi dengan natrium silika sebanyak kurang
lebih 1125 ml sedangkan di daerah katoda dipenuhi dengan
aquadest dengan volume yang sama. Silika dibuat dengan cara
elektrolisis dengan karbon sebagai elektroda. Saat elektrolisis
berlangsung, setiap 30 menit dilakukan pengukuran pH pada
bagian anoda dan katoda hingga pH di katoda dan anoda sama serta
setiap 30 menit pula dilakukan pengambilan sedikit larutan untuk
dianalisa dengan PSA (Particle Size Analyzer), dan AAS (Atomic
Absorption Spectrophotometer). Ketika elektrolisis selesai, larutan
di anoda diambil dan di aging selama 18 jam setelah itu disaring
endapannya kemudian dikeringkan di dalam oven selama 18 pada
suhu 80o C. Silika yang terbentuk kemudian dianalisa dengan BET
(Brunauer-Emmet-Teller) dan EDAX (Energy Dispersive X-Ray
Analysis) untuk mengetahui karateristik dari produk yang
dihasilkan. Serbuk silika dapat disintesa dengan metode
elektrolisis. Sintesa dilakukan dengan cara melakukan
pengurasan/mengganti air yang ada di bagian katoda dan dengan
cara mengencerkan larutan natrium silika/water glass dengan
larutan NaCl. Yield yang paling baik pada sampel pengenceran
water glass 11x dengan larutan NaCl 15%. ======================================================================================= This study was purposed to synthesize silica from water
glass using electrochemical method and discover the
characteristics of the silica particles produced. The study consist of
three stages; synthesis of silica, drying, and characterization of the
product. Water glass/sodium silica (solution) put into the vessel
that had been made into two parts (anode area and cathode area)
where the membrane cation as the divider of those two parts. The
anode area filled by sodium silica as much as 1125 ml while in the
cathode area filled by aquadest with the same volume. Silica was
made by electrolysis and the carbon as the electrode. When
electrolysis was taking place, every 30 minutes is measured pH in
the anode and cathode area until the pH in catode and anode was
same and every 30 minutes also take a little retrieval solution for
analysis by PSA (Particle Size Analyzer), and AAS (Atomic
Absorption Spectrophotometer). When electrolysis was done,
solution in anode was taken and aging for 18 hours then filter the
precipitate of silica after that dry in oven for 18 hours at 80o C.
Silica that formed was analyzed by BET (Brunauer-Emmet-Teller)and EDAX (Energy Dispersive X-Ray Analysis), for discovering the characteristics of the product. Silica powders could be synthesized by electrolysis method. Synthesis is performed by dewatering / replacing the existing water at the cathode and the way dilute solution of sodium silica / water glass with a solution of NaCl. The best yield on a sample of dilution water glass 11x with 15% NaCl solution.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | electrolysis, electrode, silica, elektrolisis, elektroda, silika. |
| Subjects: | T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial. |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 16 Jan 2017 04:28 |
| Last Modified: | 26 Dec 2018 08:20 |
| URI: | http://repository.its.ac.id/id/eprint/1605 |
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