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PENENTUAN SUHU OPTIMUM BOTTOM COLUMN DALAM PEMURNIAN TRIASETIN MENGGUNAKAN SIMULASI CHEMCAD 7.1.5 Putri, Vemmy N.A.; Suryandari, Ade Sonya
DISTILAT: JURNAL TEKNOLOGI SEPARASI Vol 6, No 1 (2020): Distilat: Jurnal Teknologi Separasi
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v6i1.54

Abstract

Perkembangan biodiesel di Indonesia mengakibatkan kenaikan kebutuhan triasetin sebagai aditif bahan bakar. Manfaat triasetin selain untuk manaikkan nilai oktan juga dapat digunakan sebagai anti-knocking. Kemurnian produk triasetin sebagai bahan aditif minimal sebesar 99,8% ditetapkan dalam perancangan ini. Maka dari itu pemurnian triasetin menjadi salah satu proses penting dalam produksi. Proses distilasi dipilih dalam pemurnian triasetin dari sisa reaktan maupun produk samping karena terdapat perbedaan volatilitas setiap komponennya. Maka dari itu untuk mengoptimumkan pemurnian triasetin melalui proses distilasi untuk mendapatkan kemurnian tinggi dengan mempertimbangkan jumlah produk dilakukan simulasi proses produksi triasetin menggunakan CHEMCAD 7.1.5. Simulasi difokuskan pada penentuan suhu optimum pada bottom product kolom distilasi dengan melakukan trial mulai dari suhu 258°C. Hasil yang didapatkan semakin tinggi suhu bottom product maka semakin tinggi kemurnian triasetin namun produk yang dihasilkan semakin sedikit. Sehingga dari simulasi yang talah dilakukan suhu optimum bottom product dalam proses pemurnian triasetin sebesar 273°C dengan kemurnian 99,84% dan jumlah produk sebanyak 2402,65 kg/jam.
Produksi Biodiesel dari Minyak Jelantah dengan Katalis Heterogen CaO dari Limbah Cangkang Telur Suryandari, Ade Sonya; Ardiansyah, Zainur Risky; Putri, Vemmy Nurmala Andhani; Arfiansyah, Ilham; Mustain, Asalil; Dewajani, Heny; Mufid, Mufid
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol 5, No 1 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Nowadays, the substitute for biofuel diesel fuel is biodiesel. Waste cooking oil has the potential as a biodiesel feedstock due to its environmentally friendly, inexpensive, reduces household waste and does not compete with food needs. One effort that can be done is to use CaO catalyst from eggshell waste. Eggshells contain 95,28% CaCO3 which can be calcined to produce CaO. In this research, production of biodiesel is done by using waste cooking oil and CaO catalyst from eggshells with various variables to determine the best calcination conditions in the preparation of the catalyst. The eggshells were calcined at variable temperatures (600,700,800 and 900°C) during the time variables (2,3,4 and 5 hours). The operating conditions in the transesterification reaction were at 60°C for 2hours with a stirring speed of 700rpm and a mole ratio of oil and methanol of 1:12. The results obtained, the best calcination conditions in producing CaO catalysts were at a temperature of 800°C for 2 hours with 78,31% mass recovery. In addition, the transesterification reaction using the best catalyst produced 97,2% FAME with a density of 0,8549 gr/mL and a viscosity of 9,58 cSt.
Characterization and Preparation of Ni/γAl2O3 Catalyst for Acetylation of Glycerol in a Fixed Bed Reactor Applied as an Octane Booster for Commercial Fuels Dewajani, Heny; Chumaidi, Achmad; Suryandari, Ade Sonya; Dewi, Ernia Novika; Ahsan, Muhammad Hafizh
Jurnal Bahan Alam Terbarukan Vol 10, No 2 (2021): December 2021 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v10i2.32196

Abstract

Glycerol is a by-product of biodiesel production with the amount of 10% of the total biodiesel product. To increase the utility and economic value of glycerol, it can be processed into several derivative products. One of the glycerol derivative products is currently being developed through the acetylation process. Glycerol acetylation product has been investigated as a component that can be used to increase the octane number of commercial fuels, otherwise known as bio-additives or octane boosters. This study aims to convert glycerol from the by-product of biodiesel production through the acetylation process using a modified solid catalyst Ni/γ-Al2O3 in a fixed bed reactor. The focus of this research is to study the effect of reactant flow rate and the mole ratio of glycerol to acetic acid on glycerol conversion. The variations used were flow rates of feed from 40, 60, 80 and 100 ml/minute, and the mole ratio of glycerol to acetic acid was 1:3, 1:5, 1:7, and 1:9. The experiment was carried out in several stages, namely: preparation and modification of the catalyst, the acetylation process and product application into commercial fuels. The acetylation reaction took place at a temperature of 100 °C and the mass of the catalyst used was 5% of the mass of glycerol. The results showed that the highest conversion of 74.24% was achieved under operating conditions with a reactant flow rate of 40 ml/min and glycerol to acetic acid mole ratio of 1:9. The utilization of acetylation products as bio-additives is carried out by adding reaction products to Pertamax fuel. The highest increase in octane number of Pertamax fuel at the addition of 8% volume of acetylation product from the initial octane number of 93 increased to 102 (increased by 10%).