Evaluation of ASTM D6584 Method for Biodiesel Ethyl Esters from Sunflower Oil and Soybean/Tallow Mixture and for Biodiesel Methyl Esters from Tung Oil and Soybean/Tung Mixture

Dias, Adriana Neves; Kurz, Márcia Helena Scherer; Fagundes, Cássia Alessandra Maciel; Caldas, Sergiane Souza; Clementin, Rosilene Maria; D’Oca, Marcelo Gonçalves Montes; Prímel, Ednei Gilberto

doi:10.5935/0103-5053.20140092

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…In unrelated applications, tung oil has been employed as a promising starting material for the preparation of biodiesel [23]. When tung oil is used to produce biodiesel, a high percentage of monoglycerides are formed in comparison to either a soybean oil/tung oil mixture or pure sunflower oil [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites

et al. 2015

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Tung oil is uniquely reactive among plant-based natural oils due to the series of conjugated carbon-carbon double bonds in its fatty acid chains. These conjugated carbon-carbon double bonds impart a high reactivity towards cationic polymerization in the presence of other reactive co-monomers, such as divinylbenzene and styrene. An impressive decrease in the cure time of tung oil-based thermosets has been achieved when the resins investigated were microwaved in the presence of carbon nanotubes (CNTs). However, the fast cure compromised the overall thermo-mechanical properties of the materials investigated. Microwave power, exposure time, and CNT loading effects have been assessed by means of dielectric analysis (DEA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and proton nuclear magnetic resonance ( 1 H NMR) spectroscopy of extracts obtained by Soxhlet extraction. Possible reasons were proposed to explain the overall inferior properties observed whenever faster cure rates were achieved.

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Section: Introductionmentioning

confidence: 99%

Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites

et al. 2015

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“…Those chromatograms were carefully analyzed in order to univocally identify the GC signals that are presented in the Table 1. The GC signals appearing between 13 and 19 minutes belong to monoglycerides generally present in the sunflower oil (Alleman et al, 2019; Dias et al, 2014; Mc Curry, 2012; Okullo et al, 2013; Paryanto et al, 2019; Pauls, 2011; Planck & Lorbeer, 1995; Ruppel & Hall, 2006). Then, diglycerides appear between 20 and 22 min (Mc Curry, 2012; Pauls, 2011; Planck & Lorbeer, 1995; Ruppel & Hall, 2006; Satou et al, 2017) and the signals from 24 min until 28 min correspond to triglycerides (Okullo et al, 2013; Planck & Lorbeer, 1995; Qian et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Transesterification of waste cooking oil with a commercial liquid biocatalyst: Key information revised and new insights

Mateos

Casella

Briand

et al. 2023

J Americ Oil Chem Soc

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The transesterification of the waste cooking oil (WCO) with various linear alcohols (C1 to C4) using the commercial biocatalyst Eversa ® Transform in its liquid form is addressed in this investigation. The influence of the amount of the liquid formulation of lipase Eversa ® Transform, nature of alcohol, oil to alcohol molar ratio and water addition in the transesterification of fresh sunflower oil and WCO was investigated. In addition, an innovative combination of that fungal based biocatalyst with a native vegetable lipase, known as Araujia sericifera (ASL), in a liquid formulation fashion was investigated. The assays carried out at 35 C for 24 h, an oil: alcohol molar ratio of 1:6.8, 2% v/w water added and 1% v/w of biocatalyst allowed to obtain up to 90% conversion and yield towards fatty acid methyl, ethyl and propyl esters. In the particular case of 1-butanol (C4) a 79% conversion and 72% yield to the esters was obtained. The biocatalyst maintains about 60% of its activity in the conversion of glycerides and yield towards the esters. The combination of process using Eversa ® Transform and then the ASL lipase in the transesterification of the WCO probed efficient in the conversion of triglycerides using 1-butanol. A shift from 73 wt % of fatty acid butyl esters (FABE) towards 90 wt % was achieved.

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“…Glycerol, monoglycerides, and diglycerides contents did not meet ANP specification, contrarily to the product obtained by the enzyme/enzyme hydroesterification [8]. It is important to note that, although the ASTM D6584 is concerned with analyzing of methyl esters, the same methodology can be used to analyze glycerides from ethyl esters, as previously reported [33]. The presence of glycerides (mono-and diglycerides) was expected, since ethyl esters were obtained by transesterification route and the crude product was not purified by downstream steps.…”

Section: Medium Scale Fatty Acid Ethyl Esters Productionmentioning

confidence: 86%

Simultaneous Enzymatic Transesterification and Esterification of an Acid Oil Using Fermented Solid as Biocatalyst

Aguieiras

Cavalcanti-Oliveira

Castro

et al. 2017

J Americ Oil Chem Soc

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This work studied the enzymatic synthesis of fatty acid ethyl esters (FAEE) for potential use as biodiesel via simultaneous esterification and transesterification of acid oil from macaúba in a solvent‐free system. A fermented and dry babassu cake with lipase activity from Rhizomucor miehei was used as biocatalyst. FAEE content above 85% was achieved after 96 h of reaction with enzyme loading of 13 U per g of oil, 120 mmol of hydrous ethanol (95% ethanol and 5% water)/20 mmol of oil (molar ratio ethanol:oil of 6:1), at 40 °C. After two consecutive enzymatic reactions, 90.8 wt% FAEE content was obtained. These results demonstrate a promising transesterification/esterification method for FAEE production from an acid and low‐cost oil and the process has potential to decrease the costs of enzymatic biodiesel production.

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Evaluation of ASTM D6584 Method for Biodiesel Ethyl Esters from Sunflower Oil and Soybean/Tallow Mixture and for Biodiesel Methyl Esters from Tung Oil and Soybean/Tung Mixture

Cited by 6 publications

References 2 publications

Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites

Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites

Transesterification of waste cooking oil with a commercial liquid biocatalyst: Key information revised and new insights

Simultaneous Enzymatic Transesterification and Esterification of an Acid Oil Using Fermented Solid as Biocatalyst

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