Exergetic evaluation of biodiesel production from rice bran oil using heterogeneous catalyst
Newton A. Ihoeghian,M. A. Usman +1 more
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In this article, the authors used exergy analysis to determine location, magnitude and sources of thermodynamic inefficiencies in a heterogeneously catalyzed rice bran oil biodiesel production plant.Abstract:
With the increasing interest in developing alternative fuel sources to fossil fuels, biodiesel is one preferred alternative. Several researchers have proposed the use of heterogenous catalyst but it is not commercially in use yet. Recently, more attention is being paid to improvement of the energetic performance and minimising the inefficiencies in the different process components, but not many literatures have shown how these inefficiencies are introduced during design of heterogeneously catalysed biodiesel production processes. This study aim to use exergy analysis to determine location, magnitude and sources of thermodynamic inefficiencies in a heterogeneously catalyzed rice bran oil biodiesel production plant. It demonstrates how improper placement of utilities can result to energy losses in a heterogeneously catalyzed rice bran oil biodiesel production plant and it comparatively examine how the exothermic energy of transesterification reaction can drive the system. Two rice bran oil biodiesel production plants are simulated. The first production plant simulated has hot utility supply to the reactor while the second is without hot utility supply to the reactor and both were defined as scheme 1 and scheme 2 respectively. The overall analysis showed that for scheme 1, exergy efficiency was 63.92% with 94.2% of the total exergy destruction taking place in the reactor while efficiency of scheme 2 was observed to improve to 75.15% with exergy destruction in the reactor reduced to 1.63%.read more
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References
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Progress and recent trends in biodiesel fuels
TL;DR: The most important variables affecting methyl ester yield during the transesterification reaction are the molar ratio of alcohol to vegetable oil and the reaction temperature as discussed by the authors, which is the commonly used alcohol in this process, due to its low cost.
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Biodiesel production from waste cooking oil: 1. Process design and technological assessment
TL;DR: The acid-catalyzed process using waste cooking oil proved to be technically feasible with less complexity than the alkali-catalystzed process, thereby making it a competitive alternative to commercial biodiesel production by the alkaline-catalyszed process.
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Biodiesel production through the use of different sources and characterization of oils and their esters as the substitute of diesel: A review
S. P. Singh,Dipti Singh +1 more
TL;DR: In this paper, the authors reviewed the source of production and characterization of vegetable oils and their methyl ester as the substitute of the petroleum fuel and future possibilities of Biodiesel production.
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Homogeneous, heterogeneous and enzymatic catalysis for transesterification of high free fatty acid oil (waste cooking oil) to biodiesel: a review.
TL;DR: It was found that using heterogeneous acid catalyst and enzyme are the best option to produce biodiesel from oil with high FFA as compared to the current commercial homogeneous base-catalyzed process, which still suffers from serious mass transfer limitation problems and therefore is not favorable for industrial application.
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Non-edible vegetable oils: A critical evaluation of oil extraction, fatty acid compositions, biodiesel production, characteristics, engine performance and emissions production
Abdulaziz Atabani,Arridina Susan Silitonga,Hwai Chyuan Ong,Teuku Meurah Indra Mahlia,Haji Hassan Masjuki,Irfan Anjum Badruddin,H. Fayaz +6 more
TL;DR: The use of non-edible plant oils is very significant because of the tremendous demand for edible oils as food source as mentioned in this paper, however, edible oils’ feedstock costs are far expensive to be used as fuel.