Thermogravimetric Approach for Assessing the Oxidation Level of a Biodiesel Sample

Díaz‐Ballote, L.; Gómez-Hernández, Karen; Vega-Lizama, Elsy T.; Ruiz‐Gómez, Miguel A.; Maldonado, L.; Hernández, Emanuel

doi:10.21577/0100-4042.20170199

Cited by 3 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diesel typically has the lowest onset temperature (50–120 °C depending on the source and composition of the diesel), followed by biodiesel/diesel blends, which have a higher-onset temperature than diesel. Biodiesel typically has a higher-onset temperature than the blends, and depending on the biodiesel source and DUs, the onset ranges from 150 to 230 °C. ,− These researchers noted only one continuous weight loss event for diesel, biodiesel/diesel blends, and biodiesel. However, researchers examining waste cooking oil and grease biodiesel with a DU of 110.58 found a single continuous weight loss event, while their derivative weight loss curve exhibited four stages, similar to the three stages we describe .…”

Section: Results and Discussionmentioning

confidence: 99%

Locally Sustainable Biodiesel Production from Waste Cooking Oil and Grease Using a Deep Eutectic Solvent: Characterization, Thermal Properties, and Blend Performance

et al. 2021

View full text Add to dashboard Cite

As part of local sustainability efforts, biodiesel was synthesized via transesterification using a deep eutectic solvent (DES) without further washing from on-campus, dining facility waste cooking oil and grease. Before moving forward with repurposing used DES as a solvent in chemistry teaching labs, we determined the suitability of the biodiesel as an alternative fuel blended with diesel to power campus utility vehicles. Biodiesel components were characterized by gas chromatography–mass spectrometry (GC–MS), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy ( 1 H NMR), viscometer, differential scanning calorimetry (DSC), and evolved gas analysis during pyrolysis with a thermogravimetric analyzer coupled with FTIR (TGA-FTIR). The four major components of fatty acid methyl esters (FAMEs) in the biodiesel were methyl oleate, methyl linoleate, methyl palmitate, and methyl stearate. Kinematic viscosity over typical temperature ranges was within optimal values recommended by the American Biodiesel Standard (ASTM D6751), with a 30:70 biodiesel/diesel blend experimental viscosity of 3.43 cSt at 40 °C and a calculated viscosity of 10.13 cSt at 0 °C. The pure biodiesel’s cold-temperature onset of crystal formation is −10.1 °C versus −16.4 °C for a 30:70 biodiesel/diesel blend. Pyrolysis indicates good thermal stability, however, with an increased CO 2 evolution in the blended fuel at higher temperatures as compared to that in the pure biodiesel and the pure diesel. Combustion gas analysis indicates virtually complete combustion of the blended fuel to CO 2 and H 2 O with only trace amounts of CO. Overall results indicate that the biodiesel synthesized using DES is a suitable fuel for campus utility vehicles in the local moderate temperature climate and affords increased local sustainability by using used DES repurposed in our chemistry teaching labs.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Locally Sustainable Biodiesel Production from Waste Cooking Oil and Grease Using a Deep Eutectic Solvent: Characterization, Thermal Properties, and Blend Performance

et al. 2021

View full text Add to dashboard Cite

show abstract

Advanced characterization of oxidized derivatives in alternative fatty esters mixture for biodiesel purposes

Melo

Silva

Santos

et al. 2022

Fuel

View full text Add to dashboard Cite

Improvement of the Oxidation Stability of Waste Cooking Oil Biodiesel Using Natural Antioxidants

Kongolo,

Jager,

Ameh

et al. 2023

Preprint

View full text Add to dashboard Cite

Oxidation degradation is one of the primary obstacles hindering the commercialization of biodiesel, which has been established as a viable alternative to diesel derived from fossil fuels. In the present study, the Rancimat method is employed to determine the efficacy of three natural antioxidants, vitamins A, C, and E, in enhancing the oxidation stability of biodiesel produced from waste cooking oil (WCO). At a concentration of 1000 ppm, the selected antioxidants improved the oxidation stability of biodiesel. Vitamin C improved the WCO biodiesel induction period (IP) from 0.79 to 7 hours most effectively. This is due to the low bond dissociation energy (BDE, 318.5 kJ/mol), the low molecular weight (Mw, 176.16 g/mol), and the formation of acetyl palmitate, which is known to possess antioxidant properties in oils. When antioxidants A and C (IP = 12.9 hours) and antioxidants C and E (IP = 7 hours) were combined in a ratio of 1:1, they were more effective. The combination of A and E negatively affected the oxidation stability of WCO biodiesel, resulting in an induction period of 0.33 hours. Herein, the present research has demonstrated that the utilisation of antioxidant C, either alone or in conjunction with other natural antioxidants, exerts a favourable impact on the oxidative stability of WCO biodiesel.

show abstract

Thermogravimetric Approach for Assessing the Oxidation Level of a Biodiesel Sample

Cited by 3 publications

References 19 publications

Locally Sustainable Biodiesel Production from Waste Cooking Oil and Grease Using a Deep Eutectic Solvent: Characterization, Thermal Properties, and Blend Performance

Locally Sustainable Biodiesel Production from Waste Cooking Oil and Grease Using a Deep Eutectic Solvent: Characterization, Thermal Properties, and Blend Performance

Advanced characterization of oxidized derivatives in alternative fatty esters mixture for biodiesel purposes

Improvement of the Oxidation Stability of Waste Cooking Oil Biodiesel Using Natural Antioxidants

Contact Info

Product

Resources

About