Transesterification of RBD palm oil using supercritical methanol

Song, Eunseok; Lim, Jung‐won; Lee, Hong-shik; Lee, Youn-Woo

doi:10.1016/j.supflu.2007.09.010

Cited by 149 publications

(65 citation statements)

References 18 publications

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“…Figure 4 shows the change of the total FAEEs and triglyceride conversion with variation of the ethanol to oil molar ratio at a fixed reaction time of 10 min. The FAEEs content was observed to increase with increasing ethanol to oil molar ratio, and is consistent with the literature (Song et al, 2008;Varma and Madras, 2007). This finding is explained by the lowering of the critical point of the UPO-ethanol mixture with increasing alcohol content (Anitescu et al, 2008;Sakdasri et al, 2015).…”

Section: Effect Of Molar Ratiosupporting

confidence: 91%

An entirely renewable biofuel production from used palm oil with supercritical ethanol at low molar ratio

Sakdasri

Sawangkeaw

Ngamprasertsith

2017

Braz. J. Chem. Eng.

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-The biofuel production from used palm oil (UPO) using supercritical ethanol (SCE) at low molar ratio was investigated in order to produce an entirely renewable fuel. The effects of the reaction time and ethanol to oil molar ratio were considered from 0.5 to 10 min and 6:1 to 18:1, respectively. The optimal parameters were 10 min and a 12:1 molar ratio, representing a remarkable reduction from 42:1 for the conventional SCE process. Because of the high operating temperature, the triglycerides conversion rate reached 99%, and the glycerides content met the international specification for biodiesel. However, an ester content of 70% was obtained at optimal conditions. The side reaction between glycerol and ethanol demonstrated a positive effect in increasing fuel yield by 8.15%. The product can be considered an alternative biofuel instead of biodiesel.

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Section: Effect Of Molar Ratiosupporting

confidence: 91%

An entirely renewable biofuel production from used palm oil with supercritical ethanol at low molar ratio

Sakdasri

Sawangkeaw

Ngamprasertsith

2017

Braz. J. Chem. Eng.

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“…technology has been reported for palm oil transesterification in a batch-type reactor system (67) and for coconut and palm kernel oil in a continuous transesterification process (68).…”

Section: Non-catalytic Transesterificationmentioning

confidence: 99%

Recent Trends in Biodiesel and Biogas Production

Bušić

Kundas

Morzak

et al. 2018

Food Technol. Biotechnol.

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SummaryBiodiesel and biogas are two very important sources of renewable energy worldwide, and particularly in EU countries. While biodiesel is almost exclusively used as transportation fuel, biogas is mostly used for production of electricity and heat. The application of more sophisticated purification techniques in production of pure biomethane from biogas allows its delivery to natural gas grid and its subsequent use as transportation fuel. While biogas is produced mostly from waste materials (landfills, manure, sludge from wastewater treatment, agricultural waste), biodiesel in EU is mostly produced from rapeseed or other oil crops that are used as food. This raises the 'food or fuel' concerns. To mitigate this problem considerable efforts have been done to use non-food feedstock for biodiesel production. These include all kinds of waste oils and fats, but recently more attention has been devoted to production of microbial oils by cultivation of microorganisms that are able to accumulate high amounts of lipids in their biomass. Promising candidates for microbial lipids production can be found www.ftb.com.hrPlease note that this is an unedited version of the manuscript that has been accepted for publication. This version will undergo copyediting and typesetting before its final form for publication. We are providing this version as a service to our readers. The published version will differ from this one as a result of linguistic and technical corrections and layout editing.2 among different strains of filamentous fungi, yeast, bacteria and microalgae. Feedstocks of interest are agricultural waste rich in carbohydrates as well as different lignocellulosic raw materials where some technical issues have to be resolved. In this work, recovery and purification of biodiesel and biogas were also considered.

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“…However, saturated fatty acids have a slightly lower reactivity than the unsaturated fatty acids (Warabi et al, 2004). On the other hand, a second-order kinetic model with respect to both the triglycerides and alcohol concentrations has also been proposed (Diasakou et al, 1998;Song et al, 2008). This divides the transesterification reaction into three steps; the reaction between a triglyceride and an alcohol that generates a diglyceride and an alkyl ester, the diglyceride and alcohol and finally the monoglyceride and alcohol.…”

Section: The Chemical Kinetics and Phase Behavior In Supercritical Trmentioning

confidence: 99%