Continuous production of biodiesel from rapeseed oil by ultrasonic assist transesterification in supercritical ethanol

Мазанов, С В; Габитова, А Р; Усманов, Р А; Гумеров, Ф. М.; Labidi, Sana; Amar, Mounir Ben; Passarello, Jean-Philippe; Kanaev, Andreï; Volle, Fabien; Neindre, B. Le

doi:10.1016/j.supflu.2016.07.009

Cited by 59 publications

(28 citation statements)

References 72 publications

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“…The increase in catalyst mass favors the ester yield, however, only until the reaction equilibrium is reached. [ 26 ] It would be unviable to increase the catalyst mass beyond this point since this would make the process more expensive.…”

Section: Resultsmentioning

confidence: 99%

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Continuous Transesterification Reaction of Residual Frying Oil with Pressurized Ethanol Using KF/Clay as Catalyst

Zempulski

Trentini

Milinsk

et al. 2020

Euro J Lipid Sci & Tech

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The efficiency of a heterogeneous potassium fluoride (KF)/clay catalyst in continuous ester production from residual frying oil using pressurized ethanol is evaluated. Reactions without catalysts are conducted to determine the effect of the catalyst on ester yield. To verify the performance of the catalyst, the reactions are conducted for 3 h with determination of the ester yield every 30 min and characterization of the catalyst after each reaction. The influence of the temperature, catalyst mass used in the catalytic bed, and the residence time are evaluated. KF/clay is found to be efficient in ester synthesis and provides better results compared with non-catalytic reactions and the formation of esters is favored on increasing the temperature. The ester yields remain stable over time at 275 and 300°C but at 225 and 250°C the yields decrease by 48.42% and 38.40%, respectively. This may be due to the lower diffusion coefficient at these temperatures, implying that the reaction occurs preferentially at the catalyst surface. There is an increase in yield with an increase in the catalyst mass up to 2 g. The catalyst maintains its morphological characteristics after the reaction and the average mass loss in each reaction is <8%. Practical Applications: Transesterification at high temperature under pressurized conditions has great potential in biodiesel production, due to the efficiency in obtaining esters in short reaction times. In addition, the use of inexpensive and easily obtained clay-based catalysts contributes to higher yields and allows milder operating conditions. These factors make it possible to obtain biodiesel using a low-cost raw material (residual frying oil), under pressurized conditions, which will be of interest worldwide due to the various benefits linked to its use.

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Section: Resultsmentioning

confidence: 99%

“…[ 24 ] Jesus, [ 25 ] and Mazanov et al. [ 26 ] obtained an improvement in the reaction yield, reporting increases of ≈84%, 14%, and 20%, respectively, in ester content with the use of porous zirconia, hydrotalcites, and SrO/Al 2 O 3 as catalysts.…”

Section: Introductionmentioning

confidence: 99%

Continuous Transesterification Reaction of Residual Frying Oil with Pressurized Ethanol Using KF/Clay as Catalyst

Zempulski

Trentini

Milinsk

et al. 2020

Euro J Lipid Sci & Tech

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“…The processing time varies from 25 to 35 minutes, depending on the reaction conditions. After reaching the predetermined temperature and outputting a steady state within 30 min, the resulting reaction product is fed to the film evaporator (13), by locking the control valves (14), for complete removal of excess alcohol presents in the reaction product after sampling [7].…”

Section: Methodsmentioning

confidence: 99%

“…Studies of the problem of regeneration of heterogeneous catalysts and, first of all, active aluminum oxide have been conducted [14] [15] [16] [17]. Figure 10 and Figure 11 provide the characteristics of non-catalytic and catalytic reactions of transesterification of rapeseed oil in the environment of ethanol carried out in the temperature range of 623 -653 K under the pressure of 30 MPa and the ethanol-rapeseed oil molar ratios of 12:1 and 18:1 with the use of heterogeneous catalysts Al 2 O 3 , ZnO/Al 2 O 3 , MgO/Al 2 O 3 , SrO/Al 2 O 3 with various degrees of impregnation (1% -5%) of the carrier [7].…”

Section: Transesterification Of Vegetable Oils In An Alcohol Environmmentioning

confidence: 99%

Theoretical and Experimental Study of Reaction of Transesterification of Vegetable Oils in an Alcohol Environment in the SbCF and SCF Conditions with the Ultrasonic Emulsification of Reaction Mixture and the Use of Heterogeneous Catalysts

Гумеров¹,

Усманов²,

Мазанов³

et al. 2017

IJAMSC

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A quantum-chemical study of the mechanism of transesterification reaction carried out in the traditional and supercritical fluid (SCF) conditions has been performed. Samples of biodiesel fuel have been derived from rapeseed oil in the environment of supercritical ethanol using a flow type unit, both in the absence and in the presence of heterogeneous catalysts-metal oxides. Experimental studies of kinematic viscosity of a large array of samples of derived biodiesel have been performed. The viscous correlation allowing determining the content of the desired product-fatty acid ethyl esters (FAEE)-in biodiesel samples, has been made based on the obtained experimental data on the kinematic viscosity of biodiesel samples. The influence of change of the dielectric permittivity of working environments on the rate of reaction of transesterification in the supercritical fluid conditions has been revealed.

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“…Results also indicated that by increasing the reaction time and molar ratio, the methyl ester content increases. In addition to the above, various research works that explored the effect of biodiesel production by ultrasound irradiation on the reduction of reaction time and the energy needed for biodiesel production all revealed that using ultrasound irradiation decreases the reaction time notably [25][26][27][28][29][30][31][32][33][34][35]. In Table A1 (Table A1), recent research in biodiesel production technology is described.…”

Section: Introductionmentioning

confidence: 99%

Optimization of an Ultrasonic-Assisted Biodiesel Production Process from One Genotype of Rapeseed (TERI (OE) R-983) as a Novel Feedstock Using Response Surface Methodology

et al. 2019

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In recent years, due to the favorable climate conditions of Iran, the cultivation of rapeseed has increased significantly. The aim of this study was to investigate the possibility of biodiesel production from one genotype of rapeseed (TERI (OE) R-983). An ultrasonic approach was used in order to intensify the reaction. Response surface methodology (RSM) was applied to identify the optimum conditions of the process. The results of this research showed that the conversion of biodiesel was found to be 87.175% under the optimized conditions of a 4.63:1 molar ratio (methanol to oil), 56.50% amplitude, and 0.4 s pulses for a reaction time of 5.22 min. Increasing the operating conditions, such as the molar ratio from 4:1 to 5.5:1, amplitude from 50% to 72.5%, reaction time from 3 min to 7 min, and pulse from 0.4 s to 1 s, increased the FAME (fatty acid methyl esters) yield by approximately 4.5%, 2.3%, 1.2%, and 0.5%, respectively. The properties of the TERI (OE) R-983 methyl ester met the requirements of the biodiesel standard (ASTM D6751), indicating the potential of the produced biodiesel as an alternative fuel.

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Continuous production of biodiesel from rapeseed oil by ultrasonic assist transesterification in supercritical ethanol

Cited by 59 publications

References 72 publications

Continuous Transesterification Reaction of Residual Frying Oil with Pressurized Ethanol Using KF/Clay as Catalyst

Continuous Transesterification Reaction of Residual Frying Oil with Pressurized Ethanol Using KF/Clay as Catalyst

Theoretical and Experimental Study of Reaction of Transesterification of Vegetable Oils in an Alcohol Environment in the SbCF and SCF Conditions with the Ultrasonic Emulsification of Reaction Mixture and the Use of Heterogeneous Catalysts

Optimization of an Ultrasonic-Assisted Biodiesel Production Process from One Genotype of Rapeseed (TERI (OE) R-983) as a Novel Feedstock Using Response Surface Methodology

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