Enzymatic biodiesel production: An overview of potential feedstocks and process development

Hama, Shinji; Kondo, Akihiko

doi:10.1016/j.biortech.2012.08.014

Cited by 185 publications

(110 citation statements)

References 77 publications

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“…Nowadays, biodiesel is mainly produced by transesterification of edible oils such as soybean, rapeseed, sunflower or palm oil [51], which currently account for over 85% of production costs [52]. Selection of the appropriate raw material is of major importance for ensuring the feasibility of the process at industrial scale [53].…”

Section: The Feedstocksmentioning

confidence: 99%

Moving towards a Competitive Fully Enzymatic Biodiesel Process

et al. 2015

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Enzymatic biodiesel synthesis can solve several problems posed by the alkaline-catalyzed transesterification but it has the drawback of being too expensive to be considered competitive. Costs can be reduced by lipase improvement, use of unrefined oils, evaluation of soluble/immobilized lipase preparations, and by combination of phospholipases with a soluble lipase for biodiesel production in a single step. As shown here, convenient natural tools have been developed that allow synthesis of high quality FAMEs (EN14214) from unrefined oils in a completely enzymatic single-step process, making it fully competitive.

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Section: The Feedstocksmentioning

confidence: 99%

Moving towards a Competitive Fully Enzymatic Biodiesel Process

et al. 2015

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“…In order to increase the commercial competitiveness of biodiesel, to ensure the availability of oil and to improve the use of the regional resources, it is expected that alternative vegetable non-edible oil crops will increase their participation as feedstock for biodiesel production (Bergmann et al, 2013;Hama and Kondo, 2013). Therefore, it is necessary to find new feedstock sources suitable for biodiesel production, which would not drain the edible vegetable oil supply and that would be capable of growing in marginal lands with minimum agricultural inputs (Araújo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Lipase-catalyzed ethanolysis of Jatropha curcas L. oil assisted by ultrasonication

Lerin

Remonatto

Pereira

et al. 2017

Braz. J. Chem. Eng.

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-Transesterification of non-edible oils using immobilized lipase is a promising process for biodiesel production. Thus, this study aimed to evaluate the enzymatic transesterification of the non-edible Jatropha curcas oil for FAEE production under ultrasound irradiation in a solvent-free system. The effects of enzyme concentration, water concentration, molar ratio of ethanol to oil and ultrasound power on the FAEE conversion have been evaluated. The results show that enzyme concentration and irradiation power have a positive significant effect on FAEE conversion, where an increase in these variables leads to higher conversions. Conversion above 54% of FAEE was achieved with 1.5 hours of reaction time using ultrasound irradiation, reducing reaction time by at least 3 times, when compared with the same experimental conditions without ultrasound irradiation. Results showed that ultrasound can improve reaction conversion mainly by enhancing the mass transfer between the constituents of the reactions.

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“…The enzymatic transesterification process has several advantages including the easier product separation process, does not require waste treatment, can easily recover glycerol and high selectivity and activity [10,14]. However, the drawback of this method are long residence time, requires a catalyst concentration in large quantities and high price of enzyme [14,15].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Testing of Hybrid Catalytic-Plasma Reactor for Biodiesel Production Using Modified-Carbon Catalyst

Buchori

Istadi

Purwanto

et al. 2016

Bull. Chem. React. Eng. Catal.

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Preliminary testing of hybrid catalytic-plasma reactor for biodiesel production through transesterification of soybean oil with methanol over modified-carbon catalyst was investigated. This research focused on synergetic roles of non-thermal plasma and catalysis in the transesterification process. The amount of modified-carbon catalyst with grain size of 1.75 mm was placed into fixed tubular reactor within discharge zone. The discharge zone of the hybrid catalytic-plasma reactor was defined in the volume area between high voltage and ground electrodes. Weight Hourly Space Velocity (WHSV) of 1.85 h -1 of reactant feed was studied at reaction temperature of 65 o C and at ambient pressure. The modified-carbon catalyst was prepared by impregnation of active carbon within H2SO4 solution followed by drying at 100 o C for overnight and calcining at 300 o C for 3 h. It was found that biodiesel yield obtained using the hybrid catalytic-plasma reactor was 92.39% and 73.91% when using active carbon and modified-carbon catalysts, respectively better than without plasma. Therefore, there were synergetic effects of non-thermal plasma and catalysis roles for driving the transesterification process. Copyright

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Enzymatic biodiesel production: An overview of potential feedstocks and process development

Cited by 185 publications

References 77 publications

Moving towards a Competitive Fully Enzymatic Biodiesel Process

Moving towards a Competitive Fully Enzymatic Biodiesel Process

Lipase-catalyzed ethanolysis of Jatropha curcas L. oil assisted by ultrasonication

Preliminary Testing of Hybrid Catalytic-Plasma Reactor for Biodiesel Production Using Modified-Carbon Catalyst

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