scholarly journals Effect of Alkaline Metal Catalyst to Transesterification of Jatropha Curcas oil

2018 ◽  
Vol 3 (1) ◽  
pp. 31
Author(s):  
Dini Kurniawati
Keyword(s):  
Renewable Energy ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Jatropha Curcas ◽  
Methyl Esters ◽  
Processing Method ◽  
Metal Catalyst ◽  
Alkaline Metal ◽  
In The Beginning ◽  
Reaction Result

Biodiesel is a renewable energy made of oil or fat. It is either vegetable or animal oil or fat. By using catalyst, both substances are processed by triglyceride modification to be methyl esters. This research concerned to find out the potency of alkaline (IIA) catalyst in processing biodiesel. This process initiated by testing oil free fatty acid to determine processing method. FFA value is very important in the beginning of process as it correlates to further reaction process. Temperature variation specified on 30o to 70o for 6 hours reaction. Result shows that the best methyl esters value used Mg(OH)2, Ca(OH)2 and Ba(OH)2 catalysts, respectively in 61,75%; 62,66% and 73,03%  on 60oC reaction temperature.

The effect of free fatty acid on the reactivity of copper-based catalysts for the hydrogenolysis of fatty acid methyl esters

1995 ◽  
Vol 72 (9) ◽  
pp. 1027-1031 ◽  
Author(s):  
Frank Th. van de Scheur ◽  
Guido U-A Sai ◽  
Alfred Bliek ◽  
Leendert H. Staal
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl

Dynamic Analysis of Phorbol Esters in the Manufacturing Process of Fatty Acid Methyl Esters from Jatropha curcas Seed Oil

2010 ◽  
Vol 88 (6) ◽  
pp. 851-861 ◽  
Author(s):  
Kosuke Ichihashi ◽  
Dai Yuki ◽  
Hiroshi Kurokawa ◽  
Akinori Igarashi ◽  
Toshio Yajima ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dynamic Analysis ◽  
Jatropha Curcas ◽  
Manufacturing Process ◽  
Fatty Acid Methyl Esters ◽  
Seed Oil ◽  
Phorbol Esters ◽  
Methyl Esters ◽  
Acid Methyl

scholarly journals Synthesis of Fatty Acid Methyl Esters from Jatropha curcas Oil and Its Purification Using Solvent Fractionation

2014 ◽  
Vol 13 (1) ◽  
pp. 31
Author(s):  
Avita Kusuma Wardhani ◽  
Chusnul Hidayat
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acids ◽  
Jatropha Curcas ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Solvent Fractionation ◽  
Jatropha Curcas Oil ◽  
Acid Methyl ◽  
Purification Factor

Fatty acid methyl esters (FAME) are produced by transesterification. The problem in the product of transesterification is the presence of impurities such as mono-, di-, triglycerides, and free fatty acids. So that, the purification using solvent fractionation is needed to separate them from FAME. The objective of this research were to determine the effects of crude fatty acid methyl esters-to-acetone (CFAME/acetone) ratio on yield, purity, purification factor, and recovery of FAME after fractionation and to evaluate the impurities which were separated in each step of fractionation. FAME were produced from Jatropha curcas oil using Berchmans’s and Tiwari’s methods. The impurities were separated by solvent fractionation using acetone. CFAME/acetone ratios were 1, 2, 3, 4, and 5. Fractionation was done stepwise namely 21°C, 16°C, 12°C, and 5°C. The results showed that the conversion of FAME using Tiwari’s method was 1.7-fold higher than Berchmans’s method. Purification of FAME using solvent fractionation resulted that the best CFAME/acetone ratio was 1. Yield decreased 1.6-fold at CFAME/acetone ratio 4. Purity decreased 8.74% with an increase in CFAME/acetone ratio 1 to 5. Purification factor decreased 2-fold at CFAME/acetone 1 to 3. Recovery decreased 1.3-fold at CFAME/acetone ratio 1 to 4. The impurities which were separated from FAME were mono-, di-, triglycerides, and free fatty acids and the major component of impurities was triglycerides (>59%). The results indicated that solvent fractionation could be used as an alternative method for purifying FAME and further study to optimize this method was needed.

scholarly journals HIDROLISIS MINYAK JARAK PAGAR MENJADI ASAM LEMAH BEBAS MENGGUNAKAN KATALIS CaO

2016 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Abdulloh Abdulloh ◽  
Alfa Akustia Widati ◽  
Faiz Tamamy
Keyword(s):  
Catalytic Activity ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Surface Area ◽  
Jatropha Curcas ◽  
Catalyst Deactivation ◽  
Economic Value ◽  
Jatropha Curcas Oil ◽  
Base Site

AbstrakTelah dilakukan hidrolisis minyak jarak pagar (Jatropha curcas oil: JO) menggunakan katalis CaO. Reaksi ini dimaksudkan untuk meningkatkan nilai ekonomis minyak jarak pagar selain biodiesel. Katalis CaO dikalsinasi terlebih dahulu pada suhu 800ᵒC untuk menghindari terjadinya deaktivasi katalis oleh terbentuknya CaCO3. Pada penelitian ini dilakukan karakterisasi katalis CaO meliputi struktur kristal CaO, luas permukaan, jumlah situs basa dan kekuatan kebasaan serta aktivitas katalitiknya. Hasil penelitian menunjukkan, katalis CaO memiliki luas permukaan 26,451 m2/g, kekuatan situs basa (pKB) pada daerah 7,2 < pKBH CaO < 15,0. Hasil uji aktivitas katalis CaO pada reaksi hidrolisis CJO diperoleh konversi CJO menjadi asam lemak bebas (free fatty acid: FFA) sebesar 77,58% pada waktu 60 menit. Kata kunci: hidrolisis, minyak jarak pagar (JO), free fatty acid (FFA), CaO dan  situs basa   AbstractHydrolysis of Jatropha curcas oil has been carried out using CaO as a catalyst. This reaction is intended to increase the economic value besides biodiesel. CaO catalyst was calcined at a temperature of 800 oC to avoid catalyst deactivation by formation of CaCO3. In this research include the characterization of catalysts CaO crystal structure, surface area, the number of base sites and the strength of basicity and catalytic activity. The results of the analysis showed that CaO catalyst has a surface area of 26.451 m2/g, the number of base sites of 221.77 mmol/g and the strength of base sites (pKBH)  in the range of 7.2  < pKBH CaO < 15.0. From catalytic activity test showed that that the use of the catalytic activity of CaO catalyst in the hydrolysis reaction CJO into free fatty acids (FFA) as much as 77.58% for 60 minutes. Keywords: hydrolysis, Jatropha curcas oil (JO), free fatty acid (FFA), CaO and base site

scholarly journals Tingkat Produksi Biji, Kualitas Crude Jatropha Oil dan Biodiesel Jatropha curcas sebagai Sumber Biofuels

2020 ◽  
Vol 20 (3) ◽  
Author(s):  
Maftuchah Maftuchah ◽  
Helvi Ardana Reswari ◽  
Ahmad Fauzan ◽  
Dini Kurniawati ◽  
Iis Siti Aisyah ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Jatropha Curcas ◽  
Jatropha Oil ◽  
Jatropha Curcas L

Jarak pagar (Jatropha curcas L.) merupakan salah satu komoditi perkebunan tropis yang memiliki potensi sebagai  pengganti bahan bakar minyak. Biji jarak pagar mengandung kadar minyak cukup tinggi dan sangat potensial sebagai bahan baku biodiesel.  Kegiatan penelitian ini bertujuan mendapatkan informasi tentang tingkat produksi biji, kualitas crude jatropha oil dan biodiesel  J.curcas Linn. sebagai sumber biofuels. Penelitian dilaksanakan di Desa Kedung Pengaron Pasuruan dan Laboratorium Teknologi Minyak Nabati Universitas Muhammadiayh Malang. Penelitian menggunakan Rancangan Acak Kelompok empat ulangan. Hasil pengamatan menunjukkan bahwa genotip J.curcas berpengaruh secara signifikan terhadap rerata jumlah buah per tanaman, jumlah biji per tanaman, berat kering biji per tanaman dan kadar minyak biji. Jumlah buah per tanaman dan berat kering biji per tanaman yang dihasilkan genotip JCUMM (JCUMM-5, JCUMM-6, JCUMM-7, JCUMM-18) lebih tinggi daripada kontrol IP3A dan IP3P. Jumlah biji per tanaman berkisar 91,3 (IP3P) hingga 236,6 (JCUMM-5). Berat  kering 100 biji dari berbagai genotip J.curcas berkisar antara 64,1 g (JCUMM-6) hingga 69,7 g (JCUMM-5) sedangkan kadar minyak biji berkisar antara 39,5% (JCUMM-6) hingga 57,7% (JCUMM-7). Hasil uji esterifikasi menunjukkan hasil Free Fatty Acid dari crude jatropha oil berkisar antara 0,2% (JCUMM-18) hingga 1,97% (IP3A). Seluruh genotip memiliki kadar FFA kurang dari 2% sehingga masih layak dipergunakan sebagai bahan biodiesel. Nilai bilangan asam yang diperoleh antara 2,9 mg-KOH/g (JCUMM-6) hingga 6,40 mg-KOH/g (IP3A). Sedangkan bilangan Iodine diperoleh hasil antara 94,5 g I2/100g (JCUMM-5) hingga 102,4 g I2/100g (JCUMM-6)

Determination of Free Fatty Acid Composition in Jatropha Crude Oil and Suitability as Biodiesel Feedstock

2019 ◽  
Vol 3 (1) ◽  
pp. 59-64
Author(s):  
Ravindra Verma ◽  
Dinesh K. Sharma ◽  
Prakash S. Bisen
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Crude Oil ◽  
Acid Composition ◽  
Jatropha Curcas ◽  
Alternative Fuels ◽  
Fuel Properties ◽  
Jatropha Curcas Oil ◽  
Physical And Chemical

Background: Jatropha curcas is one of the most suitable plants which seeds are nonedible in nature but rich in oil. Around 350 oil bearing crops are found suitable as potential alternative fuels for diesel engine. Non-edible crop Jatropha curcas has been identified by many experts for biodiesel production in many countries like India. Objective: The objective of this study is to find out the composition of Jatropha curcas oil and its relation with engine parameters. This research covers selected aspects of physical and chemical relation of fatty acid composition of Jatropha curcas oil and its fuel properties. Methods: A gas-chromatograph with high resolution mass spectrometer was used to determine the free fatty acid composition of the Jatropha curcas oil sample. The column length, diameter and thickness were 30m, 0.25mm and 0.25μm respectively. Helium gas was used as carrier gas, column flow of 1.80 mL/min for the GC. Results: The major fatty acids found in Jatropha curcas crude oil were the oleic (3.81%), linoleic (50%), palmitic fatty (35.66%) acid. Some physical and chemical characteristics have been evaluated and found suitable for the application in engine. Oxidation stability oxidizability and cetane number has been calculated as 4.949, 1.076 and found 55.856. Conclusion: The physical and chemical properties of Jatropha crude oil are similar to the biodiesel except the viscosity; therefore, further processing is required. The fuel properties of Jatropha Curcas oil based biodiesel were found to be within the limits of American Society for Testing and Materials (ASTM) specifications for biodiesel and diesel fuel.

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