Comparative study of oxidative stability of sunflower and cotton biodiesel through P-DSC

Galvão, Luzia P. F. C.; Santos, Anne Gabriella Dias; Gondim, Amanda Duarte; Barbosa, Marcela Nascimento; Araújo, Antônio S.; Souza, Luíz Di; Fernandes, Valter J.

doi:10.1007/s10973-011-1411-2

Cited by 17 publications

(12 citation statements)

References 6 publications

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“…The DSC results indicate that this technique may be used to monitor the thermoxidation of biodiesel since they are in agreement with previous reports on biodiesel oxidation using the Rancimat method [35][36][37][38][39][40][41][42].…”

Section: δHsupporting

confidence: 91%

“…Analyzing only the T s of each formulation, it is possible to observe its increase with increasing castor content, as previously reported by Silva [38] for castor/sunflower and castor/soybean biodiesel blends using P-DSC. Indeed, biodiesels with similar fatty acids structures present the same T s [39]. Additionally, Farias et al [40] reported that castor oil enhanced the oxidative stability of the biodiesel blends because of the high content of ricinoleic acid.…”

Section: δHmentioning

confidence: 99%

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Castor–babassu biodiesel blends: estimating kinetic parameters by Differential Scanning Calorimetry using the Borchardt and Daniels method

et al. 2019

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The main objective of this study was to assess the kinetics of the deterioration of blends of babassu and castor biodiesel. The biodiesel samples were synthesized by catalytic transesterification and characterized for their main physical properties such as kinematic viscosity, density, acid number, ester content, and oxidation stability. Thermal profiles were carried out using the Differential Scanning Calorimetry technique as presented in the American Society for Testing and Materials (ASTM) E537 standard. Kinetic parameters were obtained using ASTM E2041 standard (Borchardt-Daniels method), following a statistical treatment from the ASTM E1970 standard. Among all samples, the pure castor biodiesel sample showed the highest extrapolated onset temperature (T s), 214.92 °C, and lowest reaction rate [k(T)], 1.02 × 10 −3 min −1 , indicating that this sample is more resistant to oxidation. On the other hand, the blend with the babassu/castor biodiesel mass ratio of 75/25 was the most prone to oxidize. Thus, castor biodiesel may be used as an additive to improve the oxidative stability of other sources of biodiesel, including babassu biodiesel.

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Section: δHsupporting

confidence: 91%

Section: δHmentioning

confidence: 99%

Castor–babassu biodiesel blends: estimating kinetic parameters by Differential Scanning Calorimetry using the Borchardt and Daniels method

et al. 2019

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“…It is worth highlight that these are consequences of the modifications caused by the reticulation, which possibly caused deformation in the mesoscopic structure. In addition, such modifications can be related to partial fillings or even blocking the pores of the mesoporous structures by inserted compounds, behavior already described in the literature for other compounds [37]. The detail amplified in the upper right corner displays the results of low angle XRD for SBA-15 support and biocatalysts obtaining by physical adsorption (A4 ADS ) and covalent linkage (A4 Lc ).…”

Section: Support and Biocatalyst Characterizationmentioning

confidence: 76%

Influence of the Procedure to Immobilize Lipase on SBA-15 for Biodiesel Production from Palm Kernel Oil

et al. 2021

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Microbial lipase from Burkholderia cepacia was immobilized by covalent bond and physical adsorption on SBA-15 mesoporous support and its catalytic efficiency was measured in the formation of fatty acids ethyl esters from palm kernel oil. The immobilized biocatalyst and its support were characterized by X-ray Diffraction, Fourier Transform Infrared Spectroscopy, N 2 Adsorption-desorption, and thermal analysis TG/DTG. The immobilization of the enzyme onto the support maintained the typical structure of the SBA-15. From the TG measurements, it can be deduced that about 25% of lipase was immobilized in SBA-15 via covalent bond and 15% was incorporated via physical adsorption. Both immobilized lipase preparations were used to perform the transesterification reactions using different oil: ethanol molar ratios and time. The biocatalyst prepared by physical adsorption promoted better results, measured by the apparent yield (> 90%) and conversion (98.9%) in all reactions, which were also confirmed by viscosity and density data. The regeneration of SBA-15 support was found to be feasible and demonstrated efficiency for 5 times, reducing the associated costs of the process.Luiz Di Souza-In memoriam.

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“…The oxidative stability depends on the chemical composition, the quality of the raw material, and the conditions of the rening processes, and the OT value can be used for evaluating the quality of oils and fats. 44 The FTIR spectrum showing the characteristic bands of the lipid chain of palm oil is shown in Fig. 6 and Table 3.…”

Section: Characterization Of Palm Oilmentioning

confidence: 99%

Catalytic pyrolysis (Ni/Al-MCM-41) of palm (Elaeis guineensis) oil to obtain renewable hydrocarbons

et al. 2021

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Comparative study of oxidative stability of sunflower and cotton biodiesel through P-DSC

Cited by 17 publications

References 6 publications

Castor–babassu biodiesel blends: estimating kinetic parameters by Differential Scanning Calorimetry using the Borchardt and Daniels method

Castor–babassu biodiesel blends: estimating kinetic parameters by Differential Scanning Calorimetry using the Borchardt and Daniels method

Influence of the Procedure to Immobilize Lipase on SBA-15 for Biodiesel Production from Palm Kernel Oil

Catalytic pyrolysis (Ni/Al-MCM-41) of palm (Elaeis guineensis) oil to obtain renewable hydrocarbons

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