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T1 - In-situ transesterification reaction for biodiesel production

Transesterification involves reaction between a fatty acid and a primary alcohol.

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9.2 The Reaction of Biodiesel: Transesterification | EGEE …

Istadi, I., Pramudono, B., Suherman, S. and Priyanto, S. 2010. Potential of LiNO3/Al2O3 Catalyst for Heterogeneous Transesterification of Palm Oil to Biodiesel. Bulleting of Chemical Reaction Engineering & Catalyst. 5(1): 51-56.

(2017) Biodiesel Synthesis via Transesterification of Soybean Oil with Methanol.

Biodiesel is an ecofriendly and alternativeenergy source for diesel engines that can be synthesized by transesterification of vegetable oil or animal fat with alcohols.

Biodiesel production - Wikipedia

The chemical stability of the heterogeneous catalysts was investigated by analyzing the presence of free Ca, Sr or Ba in the biodiesel product.

The removal of these homogeneous catalysts from the biodiesel requires repeated washing with water after neutralisation, which also results in production of wastewater.

The transesterification reaction was carried out in a 500 mlthree-neck glass batch reactor equipped with an ultrasonic transducer and probe, a condenser, a stirrer and thermocouple thermometer.

Methanolysis and biodiesel production

Two aspects are analyzed: the kinetics of the transesterification and the viscosity dynamics during the reaction.

Because the products and the enzyme do not dissolve in carbon dioxide at room conditions, separation can easily be achieved by reduction of pressure Thus, the enzymatic transesterification for production of biodiesel in supercritical fluids under mild conditions is of commercial interest.

Biodiesel synthesis can be conducted using transesterification of triglycerides in the presence of catalyst and alcohol. The oil extraction and transesterification steps are carried out separately for the conventional biodiesel production, which can result in longer time requirement and using different operating units. An alternative to the conventional method is the in-situ transesterification process, where it combines both extraction and transesterification processes into a single-step process. Biomass feedstock is used directly in the in-situ method, which can reduce the time required to obtain biodiesel, as well as conduct both processes simultaneously. The single-step process can be integrated with other technology such as microwave irradiation to enhance biodiesel productivity. Furthermore, the in-situ transesterifi- cation process involving microalgae feedstock has started to gain attention from researchers, where microalgae biomass is utilized as a feedstock for the in-situ transesterification process without the lipid extraction step prior to the transesterification reaction. This chapter focused on the in-situ transesterification process for biodiesel production, particularly for both catalytic and non-catalytic processes, and also the application of the single-step process for biodiesel synthesis from microalgae.

The current techniques for transesterification of the oils to biodiesel are based on acid/alkali catalysis.
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  • Biodiesel Synthesis via Transesterification of Soybean …

    The transesterification reactions must take place in a water-free environment to prevent saponification of the esters.

  • Biodiesel is synthesised by transesterification

    Though several methods are available for synthesis, transesterification is the preferred route for biodiesel synthesis.

  • Lipase Applications in Biodiesel Production | InTechOpen

    FaungnawakiBiodiesel production over Ca-based solid catalysts derived from industrial wastes Fuel 92 (2012) 239–244

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In-situ transesterification reaction for biodiesel production

N2 - Biodiesel synthesis can be conducted using transesterification of triglycerides in the presence of catalyst and alcohol. The oil extraction and transesterification steps are carried out separately for the conventional biodiesel production, which can result in longer time requirement and using different operating units. An alternative to the conventional method is the in-situ transesterification process, where it combines both extraction and transesterification processes into a single-step process. Biomass feedstock is used directly in the in-situ method, which can reduce the time required to obtain biodiesel, as well as conduct both processes simultaneously. The single-step process can be integrated with other technology such as microwave irradiation to enhance biodiesel productivity. Furthermore, the in-situ transesterifi- cation process involving microalgae feedstock has started to gain attention from researchers, where microalgae biomass is utilized as a feedstock for the in-situ transesterification process without the lipid extraction step prior to the transesterification reaction. This chapter focused on the in-situ transesterification process for biodiesel production, particularly for both catalytic and non-catalytic processes, and also the application of the single-step process for biodiesel synthesis from microalgae.

The method being described here is for making FAMEs biodiesel

The high cost of biodiesel is mainly due to the cost of virgin vegetable oil. Therefore, it is not surprising that the biodiesel produced from vegetable oil (for example, pure soybean oil) costs much more than petroleum based diesel. Therefore, it is necessary to explore ways to reduce production costs of biodiesel. In this sense, methods that permit minimizing the costs of the raw material are of special interest. The use of waste frying oil, instead of virgin oil, to produce biodiesel is an effective way to reduce the raw material cost because waste frying oil is estimated to be about half the price of virgin oil [].

Biodiesel synthesis from waste vegetable oil ..

AB - Biodiesel synthesis can be conducted using transesterification of triglycerides in the presence of catalyst and alcohol. The oil extraction and transesterification steps are carried out separately for the conventional biodiesel production, which can result in longer time requirement and using different operating units. An alternative to the conventional method is the in-situ transesterification process, where it combines both extraction and transesterification processes into a single-step process. Biomass feedstock is used directly in the in-situ method, which can reduce the time required to obtain biodiesel, as well as conduct both processes simultaneously. The single-step process can be integrated with other technology such as microwave irradiation to enhance biodiesel productivity. Furthermore, the in-situ transesterifi- cation process involving microalgae feedstock has started to gain attention from researchers, where microalgae biomass is utilized as a feedstock for the in-situ transesterification process without the lipid extraction step prior to the transesterification reaction. This chapter focused on the in-situ transesterification process for biodiesel production, particularly for both catalytic and non-catalytic processes, and also the application of the single-step process for biodiesel synthesis from microalgae.

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