Ultrasound-assisted production of biodiesel FAME from rapeseed oil in a novel two-compartment reactor

Nakayama, Ryoichi; Imai, Masanao; Woodley, John M.

doi:10.1002/jctb.5047

Cited by 12 publications

(7 citation statements)

References 49 publications

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“…It is important to note that, in the current study, 9 W was established as an optimal acoustic power for the transesterification process. Literature shows that similar studies [24] , [25] , [27] , [28] report much higher ultrasonic power as optimal. Also, it is not usual to find studies that calibrated the emitted power to determine power accurately.…”

Section: Resultsmentioning

confidence: 71%

“…al. [27] applied the ultrasonic power of 800 W in the transesterification of palm oil and biodiesel yield of 80% after 240 min, while Nakayama et al [28] reported an optimal power of 120 W with 90% of conversion. The comparison with the literature and the analysis of trends has allowed understanding that it is possible to obtain compatible conversions using lower ultrasonic power.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, there is a lack of knowledge to be exploited concerning a study of the effect of the ultrasonic output power (calibrated) on the system and consequently on transesterification reaction. Some studies report the assessment of the effect of nominal power (electrical input or output power) on transesterification [24] , [25] , [27] , [28] , [29] . None of these have presented the ultrasonic power calibration, i.e., estimated the ultrasonic output power emitted by ultrasound device.…”

Section: Introductionmentioning

confidence: 99%

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Ultrasound-assisted transesterification of soybean oil using low power and high frequency and no external heating source

Oliveira

Baêsso

Morais

et al. 2021

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultrasound-assisted transesterification of soybean oil using low power and high frequency and no external heating source

Oliveira

Baêsso

Morais

et al. 2021

Ultrasonics Sonochemistry

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“…Cesarini et al evaluated the water concentration in the hydrolysis‐esterification reaction to produce enzymatic biodiesel from crude soybean oil, keeping fixed the variables temperature, molar excess of methanol, and catalyst load, where 96.3 % biodiesel yield was reached after 24 h of reaction, with 0.03 g/g (3 wt%) of water in the reaction medium. Nakayama et al employed ultrasound irradiation to increase the reaction rate in a new two‐compartment reactor model to produce enzymatic biodiesel from rapeseed oil, and reached 91 % of biodiesel yield after 15 h reaction. The use of ultrasound may be relevant when it is desired to decrease the reaction time; however, the energy cost of the process may increase considerably.…”

Section: Resultsmentioning

confidence: 99%

Production of biodiesel catalyzed by lipase from Thermomyces lanuginosus in its soluble form

et al. 2018

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Biodiesel production through the transesterification of oleaginous sources utilizing alkaline catalysts shows many process drawbacks like the need of a raw material with high purity degree and a high amount of alkaline wastewater generated from the biodiesel washing step. Such drawbacks can be overcome using enzymes as catalysts. In this context, the commercial Callera™ Trans L lipase arises as an interesting alternative catalyst for hydrolysis‐esterification reaction. In order to evaluate the use of Callera™ Trans L on biodiesel synthesis and optimize the main variables of the hydrolysis‐esterification process (temperature, methanol to oil molar ratio, and catalyst concentration), this work adopted the Central Composite Statistical Design to find out the combination of factors that lead to maximum biodiesel yield. It was observed that the Callera™ Trans L lipase presents a high catalytic activity, mainly in the initial reaction steps. The optimized variables for biodiesel synthesis were 35 °C methanol to oil molar ratio of 4.5:1, and 1.45 wt% of catalyst load, which allowed reaching a biodiesel yield of 96.9 % in 24 h of reaction.

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“…Rapeseed cultivation represents 10% of global oilseed production (Gancarz et al ., 2017b). In view of exploration of alternative energy sources, rapeseed oil not only is an edible product, but is also used in the production of diesel oil (biodiesel) (Rękas et al ., ; Nakayama et al ., ; Muniz‐Wypych et al ., ; Rahim et al ., ). At present, edible oil in Poland, other EU countries and Canada is produced exclusively from double‐refined rapeseed.…”

Section: Introductionmentioning

confidence: 99%

Application of an electronic nose for determination of pre‐pressing treatment of rapeseed based on the analysis of volatile compounds contained in pressed oil

Rusinek

Siger

Gawrysiak‐Witulska

et al. 2019

Int J of Food Sci Tech

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The article presents an attempt to use an electronic nose together with a new three-parameter method for generation of a digital smellprint in order to specify the mode of processing of rapeseed based on the analysis of volatile compounds contained in cold-pressed rapeseed oil. Prior to the pressing process, the seeds were roasted or improperly stored to obtain oil samples with varied technological quality. The quality of pressed oils was evaluated by determination of the acid value. Furthermore, changes in oil colour were assessed with the use of an imaging colorimeter. Volatile compounds were determined with the use of gas chromatography and an electronic nose with a metal oxide semiconductor (MOS) sensor matrix. It was found that the mode of seed pre-treatment before pressing did not change the colour of the oil significantly. However, it influenced the profile of volatile organic compounds and changed their proportions. Ketones represented the largest proportion of volatile compounds determined for roasted samples and those pressed from seeds moistened up to 25% (w.b.). Alcohols dominated in samples moistened up to 10 and 12%, terpenes were the dominant volatile compounds in samples roasted at 140°C, and other volatile compounds dominated in samples moistened up to 10 and 20% (w.b.). In turn, esters and aromatic compounds accounted for the lowest proportion in the analysed samples. The results shown by the electronic nose were correlated with the presence of particular groups of volatile compounds in rapeseed oil.An enose for analysis of rapeseed oil R. Rusinek et al. 2162

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Ultrasound-assisted production of biodiesel FAME from rapeseed oil in a novel two-compartment reactor

Abstract: BACKGROUND: Ultrasonication has been proposed as a promising technique for enzymatic

Cited by 12 publications

References 49 publications

Ultrasound-assisted transesterification of soybean oil using low power and high frequency and no external heating source

Ultrasound-assisted transesterification of soybean oil using low power and high frequency and no external heating source

Production of biodiesel catalyzed by lipase from Thermomyces lanuginosus in its soluble form

Application of an electronic nose for determination of pre‐pressing treatment of rapeseed based on the analysis of volatile compounds contained in pressed oil

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