Fujanita, Desi and Yulianti, Susan (2014) Pengembangan Karbon Mesoporous Sebagai Adsorban Unggul Berkemampuan Selektif Terhadap Air Untuk Pemurnian Ethanol Grade Bahan Bakar. Undergraduate thesis, Institut Teknology Sepuluh Nopember.
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Abstract
Berawal dari besarnya manfaat material karbon berpori
untuk berbagai macam aplikasi, mulai dari aplikasi teknologi
konversi energi hingga biomedis maupun lingkungan, penelitian
ini bertujuan untuk mensintesis karbon berpori yang mempunyai
morfologi menyerupai serat. Dengan menggunakan metode
sintesis yang mampu memberikan suatu kondisi yang disebut
kinetically controlled, metode yang kami namakan dengan
metode sekuensial gas-liquid, dapat mensintesis karbonmesoporous
yang mempunyai luasan permukaan yang tinggi
(836,25 m2/g) dan iodine number sebesar 602,5 mg/g, pada
kondisi optimum operasional gas treatment yaitu (a) komposisi
gas O2 30% vol, (b) waktu gas treatment 1 jam, (c) suhu gas
treatment 300oC, dan (d) flow-rate gas 100 cc/m; dan pada
kondisi optimum operasional liquid treatment yaitu (a) komposisi
larutan HNO3 sebesar 65%, (b) 6 jam treatment, dan (c) suhu
100oC. Metode sintesis yang dikembangkan di sini
memperhatikan aspek teknologi proses, ketersediaan bahan, dan
keramahan lingkungan.
Fungsi dari gas dan liquid treatment adalah mengarahkan
pembentukan struktur morfologi pori-pori mikro karbon, yang
dilapisi oleh gugus fungsional oksigen, seperti carboxylic acid,
quinones, -C-OH (stretching), dan carboxylic anhydrides, yang
mampu memenuhi segala persyaratan utama sebagai karbon
ii
berpori yang ideal. Selain itu, Liquid treatment berfungsi untuk
merubah sifat hydrophobic pada karbon menjadi hydrophylic.
Sebagai contoh untuk didemonstrasikan potensi kemanfaatannya,
karbon-mesoporous digunakan sebagai adsorban unggul yang
mampu memberikan kapasitas adsorpsi dan selektivitas terhadap
air yang besar di dalam proses pemurnian ethanol grade bahan
bakar.
Hasil percobaan aplikasi karbon sebagai adsorban
pemurnian ethanol menunjukkan terjadi kenaikan konsentrasi
ethanol setelah dilakukan proses distilasi-adsorpsi. Hal ini
membuktikan bahwa karbon black yang telah diaktivasi dengan
metode gas-liquid treatment, dapat dijadikan adsorban untuk
pemurnian ethanol. Namun, adsorban karbon mesoporous ini
belum bisa menghasilkan ethanol grade bahan bakar. ========== Starting from the benefits of porous carbon material for a
wide variety of applications, ranging from energy conversion
technology applications to biomedicine and the environment, this
study aims to synthesize porous carbon fibers have a morphology
resembling. By using the method of synthesis that can provide a
condition called kinetically controlled, a method which we call
the sequential method of gas - liquid, can synthesize mesoporous
carbon having a high surface area ( 836.25 m2 / g ) and iodine
number of 602,5 mg / g, the optimum operating conditions of gas
treatment, namely ( a) the gas composition of 30 vol% O2, ( b )
gas treatment time 1 hour, ( c ) gas treatment temperature 300oC,
and ( d ) the gas flow- rate of 100 cc / m, and the optimum
operating conditions of the treatment liquid, namely ( a) the
composition of 65 % HNO 3 solution, (b) 6 hours of treatment,
and ( c ) the temperature of 100oC. Synthesis method developed
here the aspect of process technology, the availability of
materials, and environmental friendliness .
The function of gas and liquid treatment is directing the
formation of the morphological structure of micro-porous carbon,
which is covered by the oxygen functional groups, such as
carboxylic acid, quinones,-C-OH (stretching), and carboxylic
anhydrides, which are able to meet all the essential requirements
as an ideal carbon mesoporous. In addition, liquid treatment
serves to change the characteristic of the carbon from the
iv
hydrophobic become hydrophylic. As an example for the potential
usefulness demonstrated, mesoporous carbon used as capable
adsorbant that providing superior adsorption capacity and
selectivity against water on fuel grade ethanol purification
process.
The experimental results of carbon as adsorbant at ethanol
purification showed an increase in the concentration of ethanol
after distillation-adsorption process. This proves that the carbon
black that has been activated by gas-liquid treatment method, can
be used as adsorbant for ethanol purification. However, the
mesoporous carbon adsorbant not yet produce fuel grade ethanol.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSK 661.068 3 Fuj p |
| Uncontrolled Keywords: | karbon-mesoporous, sekuensial gas-liquid,kinetically controlled, hydrophobic, hydrophylic, distilasi-adsorpsi, Mesoporous carbon, sequential gas-liquid, kinetically controlled, hydrophobic, hydrophylic, distillation-adsorption. |
| Subjects: | T Technology > TP Chemical technology > TP339 Ethanol as fuel. Biomass energy. |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 13 Jan 2020 07:49 |
| Last Modified: | 13 Jan 2020 07:49 |
| URI: | http://repository.its.ac.id/id/eprint/72513 |
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