Biodiesel fuel from rapeseed oil as prepared in supercritical methanol

Saka, Shiro; Kusdiana, Dadan

doi:10.1016/s0016-2361(00)00083-1

Cited by 902 publications

(481 citation statements)

References 9 publications

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“…Nuria Sá nchez, José M. Encinar, Gloria Martí nez, and Juan F. Gonzá lez These fluids have both gaslike viscosities and liquidlike densities [15], [16]. This process does not require any catalysts or auxiliary chemicals and does not generate significant wastes [10], [15].…”

Section: Biodiesel Production From Castor Oil Under Subcritical Methamentioning

confidence: 99%

“…This process does not require any catalysts or auxiliary chemicals and does not generate significant wastes [10], [15]. Supercritical methanol was used to obtain biodiesel from different oils such as rapeseed, sunflower, soybean and palm kernel [15], [17]- [19].…”

Section: Biodiesel Production From Castor Oil Under Subcritical Methamentioning

confidence: 99%

“…Saka and Kusdiana proposed the preparation of biodiesel via non-catalytic method with supercritical alcohol with the aim of overcome these problems [15]. Supercritical fluids are good solvents for many substances when compressed into its state of above the critical temperature and critical pressure.…”

Section: Introductionmentioning

confidence: 99%

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Biodiesel Production from Castor Oil under Subcritical Methanol Conditions

Sánchez‍¹,

Martín²,

Martínez³

et al. 2015

IJESD

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Abstract-Biodiesel is a potentially sustainably renewable fuel for diesel engines; transesterification is the most used method to produce it and high quality vegetable oils are the most usual raw material. Non-edible vegetable oils such as castor oil can provide an alternative feedstock. In this work biodiesel was obtained by transesterification of castor oil with subcritical methanol; the reaction was carried out in an hermetic reactor at temperatures higher than methanol boiling point and with a small amount of potassium methoxide as catalyst. The effect of methanol:oil molar ratios were analyzed, observing that high proportion of alcohol is needed to reach high ester content, the best results were reached with 24:1 MeOH:oil molar ratio. Regarding catalyst concentration, 8.7 mM (0.12 wt%) were enough to achieve good results. A temperature of 150 º C and 1 h of reaction, at 10 bar, were the mildest conditions to reach an ester content higher than 90 wt %. The highest ester content, 94.7 wt %, was achieved at 220 º C, 36 bar and 4 h of reaction time. Hence good quality biodiesel from castor oil can be produced in subcritical methanol conditions, using a small amount of basic catalyst.

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Section: Biodiesel Production From Castor Oil Under Subcritical Methamentioning

confidence: 99%

Section: Biodiesel Production From Castor Oil Under Subcritical Methamentioning

confidence: 99%

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Biodiesel Production from Castor Oil under Subcritical Methanol Conditions

Sánchez‍¹,

Martín²,

Martínez³

et al. 2015

IJESD

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“…In early studies of SCMe, Saka and Kusdiana [45] and Kusdiana and Saka [46] investigated the conversion of rapeseed oil into biodiesel at 350°C and 400°C, at a pressure of 45-60 MPa, and with a fixed methanol to oil ratio of 42:1. It was stated that, at a temperature of 350°C, after 4 min of treatment with SCF methanol, the yield of FAME was found to be higher than that of the common method with a base catalyst.…”

Section: Scf Methanolmentioning

confidence: 99%

Supercritical fluid technology in biodiesel production

Hoang

Bensaid

Saracco

2013

Green Processing and Synthesis

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Abstract:The synthesis of biodiesel has received attention as an alternative source of energy to decrease our dependence on petroleum-based fuels. The catalyzed processes present a series of limitations and drawbacks, among them the high energy required for complex purification and undesirable side reactions. Supercritical fluid (SCF) technology is being proved an efficient approach compared to traditional methods for preparing biodiesel. This review illustrates the advances, advantages, and drawbacks involved in the use of all current biodiesel production technologies.Keywords: biodiesel; catalyst; non-catalytic; supercritical fluid; transesterification. List of abbreviationsBDF, biodiesel fuel; FA, fatty acid; FFA, free fatty acid; FAAE, fatty acid alkyl ester; FAME, fatty acid methyl ester; FAEE, fatty acid ethyl

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“…Biodiesel production using supercritical methanol or ethanol technology could answer the problems faced by conventional catalytic methods affording higher reaction rate, no catalyst requirement, shorter reaction time, and simpler separation and purification steps (Saka & Kusdiana, 2001;Farobie & Matsumura, 2015a;Farobie & Matsumura, 2015b;Farobie & Matsumura, 2015c;Farobie & Matsumura, 2015d;Farobie et al, 2015e;Farobie et al, 2015f). However, the by-product glycerol is unavoidable, leading to the significant decrease of glycerol price in the market.…”

Section: Introductionmentioning

confidence: 99%

Artificial Neural Network Approach to Predict Biodiesel Production in Supercritical tert-Butyl Methyl Ether

Farobie

Hasanah

2016

IJOST

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In this study, for the first time artificial neural network was used to predict biodiesel yield in supercritical tert-butyl methyl ether (MTBE). The experimental data of biodiesel yield conducted by varying four input factors (i.e. temperature, pressure, oil-to-MTBE molar ratio, and reaction time) were used to elucidate artificial neural network model in order to predict biodiesel yield. The main goal of this study was to assess how accurately this artificial neural network model to predict biodiesel yield conducted under supercritical MTBE condition. The result shows that artificial neural network is a powerful tool for modeling and predicting biodiesel yield conducted under supercritical MTBE condition that was proven by a high value of coefficient of determination (R) of 0.9969, 0.9899, and 0.9658 for training, validation, and testing, respectively. Using this approach, the highest biodiesel yield was determined of 0.93 mol/mol (corresponding to the actual biodiesel yield of 0.94 mol/mol) that was achieved at 400 °C, under the reactor pressure of 10 MPa, oil-to-MTBE molar ratio of 1:40 within 15 min of reaction time.

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Biodiesel fuel from rapeseed oil as prepared in supercritical methanol

Cited by 902 publications

References 9 publications

Biodiesel Production from Castor Oil under Subcritical Methanol Conditions

Biodiesel Production from Castor Oil under Subcritical Methanol Conditions

Supercritical fluid technology in biodiesel production

Artificial Neural Network Approach to Predict Biodiesel Production in Supercritical tert-Butyl Methyl Ether

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