Penetang, Tri Maryos and Prasta, Wisda Anugrah (2015) Pemisahan fatty acid methyl esther dari crude biodiesel. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pemisahan fatty acid methyl esters (FAME) dari crude
biodiesel dedak padi menggunakan silica gel dikembangkan
dalam penelitian ini. Crude biodiesel yang digunakan dihasilkan
dari air-metanol sub kritis yang masih memiliki banyak
impurities. Pengaruh suhu solid liquid extraction menggunakan
silica gel terhadap yield dan konsentrasi FAME serta karakteristik
biodiesel akan dipelajari setelah itu dibandingkan dengan SNI
biodiesel.
Silika gel ditempatkan di furnace pada suhu 150oC untuk
menghilangkan seluruh kadar air. Pemanasan ini bertujuan untuk
menghilangkan 6% kadar air yang sebelumnya terdapat pada
silica gel. Tahap awal penelitian ini adalah proses coating crude
biodiesel pada silica gel. Crude biodiesel dilarutkan dalam nheksane
dan ditambahkan silica gel dengan perbandingan 1: 3
(w/w), diaduk menggunakan strirrer pada 300 rpm selama 1 jam,
selanjutnya n-heksan dipisahkan dengan rotary evaporator.
Langkah selanjutnya untuk memisahkan FAME yang bersifat non
polar dilakukan solid liquid extraction (SLE) menggunakan nhexane
dengan variable suhu operasi 0°C, 27°C (Ambient), 50°C
sebanyak 44 cycles. Selanjutnya n-heksan dipisahkan menggunakan rotary evaporator. Karakteristik biodiesel diuji dan
dibandingkan dengan SNI biodiesel.
Pada penelitian ini, suhu solid liquid extraction (SLE)
berpengaruh terhadap konsentrasi dan yield FAME. Pada
temperature 0°C, 27°C dan 50°C menghasilkan konsentrasi
FAME masing-masing sebesar 83,73%, 40,44% dan 33,11% dan
yield FAME sebesar 71,23%, 34,87% dan 29,2%. Pada suhu
optimum (0°C) produk biodiesel yang diperoleh dilakukan uji
densitas, viskositas kinematik, recovery FFA, flash point, pour
point dan cloud point dengan hasil masing-masing 0,855 g/ml,
4,906 cSt, 9,76 %, 127,5°C, 12°C dan 15°C, dibandingkan
dengan SNI biodiesel.
==========================================================================================================
Separation of fatty acid methyl esters (FAME) of crude
biodiesel made by rice bran using silica gel developed in this
study. In this method using a crude biodiesel by produced of
water-methanol sub-critical, this product have a lot of impurities.
The temperature solid liquid extraction using silica gel effect to
the characteristics of biodiesel will be systematically studied and
will be compared with the standard SNI of biodiesel with ASTM
analysis method.
Silica gel was heated in the furnace at the temperature of
150°C to remove all moisture content. Heating aims to eliminate
6% moisture content previously on silica gel. The early step of
this research is the process coating of crude biodiesel to silica
gel. Crude biodiesel was dissolved in solvent (n-hexane) and
added a silica gel with a ratio of 1 : 3 (w/w), then stirred using
strirrer at 300 rpm for 1 hour. Stage evaporation for eliminated a
solvent (n-hexane) using a rotary evaporator. The main step is
Solid liquid carried extraction (SLE) to separate the FAME (nonpolar
compound) using n-hexane with variable operating
temperature of 0 ° C, 27° C, 50 ° C with 44 number of etraction
cycle. Quality biodiesel was tested and compared with the SNI of
biodiesel used ASTM standart method.
In this experiment, the Solid liquid extraction (SLE)
temperature has an effects to the yield of FAME. At the temperatures of 0°C, 27° C and 50° getting ressults yield of
FAME is 71,23%, 34,87% and 29,2%. respectively. Based on the
analysis of biodiesel according to SNI (Standart Nasional
Indonesia) quality, the best quality of biodiesel product obtained
at temperatures of 0 ° C with SLE Recovery FFA, density,
kinematic viscosity, flash point, pour point and cloud point were
respectively of 9.76%, 0.855 g / ml, 4.906 cSt, 127.5 ° C, 12 ° C
and 15 ° C.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSK 660.284 2 Tri p |
| Uncontrolled Keywords: | Crude biodiesel; FAME; SNI; SLE; FFA |
| Subjects: | T Technology > TP Chemical technology > TP248.25.M46 Membrane separation |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | - Taufiq Rahmanu |
| Date Deposited: | 02 Jul 2019 02:36 |
| Last Modified: | 02 Jul 2019 02:36 |
| URI: | http://repository.its.ac.id/id/eprint/63385 |
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