Biodiesel production from Acrocomia aculeata acid oil by (enzyme/enzyme) hydroesterification process: Use of vegetable lipase and fermented solid as low-cost biocatalysts

Aguieiras, Érika C.G.; Cavalcanti-Oliveira, Elisa D.; Castro, Aline Machado de; Langone, Marta A. P.; Freire, Denise Maria Guimarães

doi:10.1016/j.fuel.2014.06.069

Cited by 141 publications

(85 citation statements)

References 32 publications

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“…In that study, the authors reported an ester yield of 75% at 60 minutes using 20% enzyme (by weight of the substrates), and reusing the enzyme was shown to be attractive for only five cycles. The results of Aguieiras et al (2014) and Michelin et al (2015) demonstrate the limitations of the enzyme-catalyzed method related to long reaction times or the need for high enzyme concentrations to reach satisfactory yields, which increases the process cost due to the high cost of the enzyme .…”

Section: Introductionmentioning

confidence: 97%

“…Macauba oil is obtained from the pulp and almond, wherein the pulp comprises ~45% of the fruit (Ramos et al, 2008) and has between 18.7 to 29 wt% of oil (Coimbra and Jorge, 2012;Ciconini et al, 2013). The literature reports the high FFA content in macauba pulp oil (Doná et al, 2013;Aguieiras et al, 2014;Iha et al, 2014;Navarro-Díaz et al, 2014;César et al, 2015), between 10.5 to 65.4 wt%, due to the presence of fatty acids in the fruit tissues of Acrocomia aculeate (César et al, 2015) and because the oil is obtained by pressing and filtration without refining steps. The processing of this crude oil for biodiesel production requires the use of methods tolerant to free fatty acids (César et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…The use of the homogeneous catalysts requires the use of subsequent washing steps for removal of the catalyst from the product and thus leads to the generation of a high volume of effluents (Vyas et al, 2010). Aguieiras et al (2014) proposed the application of enzymatic hydroesterification of macauba oil (10.5 wt% of FFA) with yields of 85% in esters; however, long reaction times were applied at each step: 6 hours for hydrolysis and 4 hours for esterification. The alcoholysis of macauba oil (88.9 mg KOH g-1 oil) in a process assisted by ultrasound is presented in the work of Michelin et al (2015) using the commercial enzyme Novozym 435 as catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Colonelli

Trentini

Santos

et al. 2017

Braz. J. Chem. Eng.

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-This study evaluated the potential of macauba pulp oil (MPO) as a feedstock for continuous ester production using ethanol under pressurized conditions. Experiments were performed in order to obtain data for the effect of process variables on ethyl ester (FAEE) and free fatty acid (FFA) conversion in a catalyst-free process. From the results, it appears that the MPO to ethanol mass ratio and the pressure were the variables with more favorable effect on the evaluated response variables. The addition of n-hexane caused an increase in the production of esters; however, this had a negative effect on FFA conversion. The addition of water was unfavorable for oil processing with high acidity. In this process, esterification and transesterification occur simultaneously, and the high FFA content in MPO provides high yields (85 wt% of esters; 93% FFA conversion) at low temperature, since the esterification reaction rate is higher than the transesterification. The decomposition of fatty acids was evaluated and levels <5% were observed under the evaluated experimental conditions.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Colonelli

Trentini

Santos

et al. 2017

Braz. J. Chem. Eng.

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“…After fermentation, the biocatalyst can be extracted from the solid medium for further use or, as reported recently, the biodiesel synthesis reactions can be performed by the direct addition of the fermented solid into the reaction medium [160][161][162][163][164]. Recently, Aguieiras et al [165] studied a two enzyme hydroesterification strategy to synthetize biodiesel employing cheap biocatalysts in both reactions. As a first step, the hydrolysis of macauba oil catalyzed by lipase from dormant castor seed was performed.…”

Section: Biodieselmentioning

confidence: 99%

The Protagonism of Biocatalysis in Green Chemistry and Its Environmental Benefits

et al. 2017

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Abstract:The establishment of a bioeconomy era requires not only a change of production pattern, but also a deep modernization of the production processes through the implementation of novel methodologies in current industrial units, where waste materials and byproducts can be utilized as starting materials in the production of commodities such as biofuels and other high added value chemicals. The utilization of renewable raw resources and residues from the agro-industries, and their exploitation through various uses and applications through technologies, particularly solid-state fermentation (SSF), are the main focus of this review. The advocacy for biocatalysis in green chemistry and the environmental benefits of bioproduction are very clear, although this kind of industrial process is still an exception and not the rule. Potential and industrial products, such as biocatalysts, animal feed, fermentation medium, biofuels (biodiesel, lignocelulose ethanol, CH 4 , and H 2 ), pharmaceuticals and chemicals are dealt with in this paper. The focus is the utilization of renewable resources and the important role of enzymatic process to support a sustainable green chemical industry.

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“…According to Aguieiras et al (2014) a solvent-free reaction medium shows several advantages such as an increase of biodiesel productivity and reduction of environmental issues (toxicity of the organic solvent) and processing costs (recovery and losses). The results of Plackett-Burman experimental design (coded and real values) for FAEE production in solvent-free system are shown in Table 2.…”

Section: Effect Of Process Variables On Faee Conversion In the Solvenmentioning

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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Biodiesel production from Acrocomia aculeata acid oil by (enzyme/enzyme) hydroesterification process: Use of vegetable lipase and fermented solid as low-cost biocatalysts

Cited by 141 publications

References 32 publications

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

The Protagonism of Biocatalysis in Green Chemistry and Its Environmental Benefits

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

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