Characterization and kinetic study of sunflower oil and biodiesel

Santos, Anne Gabriella Dias; Caldeira, Vinícius Patrício da Silva; Farias, Mirna F.; Araújo, Antônio S.; Souza, Luíz Di; Barros, Allan Kardec

doi:10.1007/s10973-011-1838-5

Cited by 38 publications

(30 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the bibliography, it is possible to find different viscosity values for biodiesel produced from sunflower within the range established by the standard. While Saydut et al [26] and Santos et al [28] reported values lower than those presented in this work (4.04 and 4.3 mm 2 /s respectively), Saba et al [27] obtained values of 4.7 mm 2 /s. This difference in the values obtained may be due to the small differences in the composition of the raw material and to the amount and composition of the impurities present in the final product.…”

Section: Fuel Characterizationcontrasting

confidence: 73%

Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil

Dueso

Muñoz

Moreno

et al. 2018

Fuel

View full text Add to dashboard Cite

Section: Fuel Characterizationcontrasting

confidence: 73%

Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil

Dueso

Muñoz

Moreno

et al. 2018

Fuel

View full text Add to dashboard Cite

“…The activation energy was 50 to 75 kJ mol 21 and 170 to 210 kJ mol 21 for biodiesel and sunflower oil, respectively. With various kinetic calculation methods and fuels, the reaction order was ranged from 0.69 to 1.89 [33]. Their data are consistent with our result.…”

Section: Determination Of Reaction Orders Rate Constants and Activasupporting

confidence: 90%

Detailed chemical kinetics for thermal decomposition of low molecular weight‐methyl esters generated by using biodiesel fuel

Thang

Maeda

Trung

et al. 2016

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Low molecular weight-methyl ester (LMW-ME), which was reported in our previous study [1], was generated by the use of biodiesel fuel (BDF) with a diesel power generator. In this article, the detailed chemical kinetics for the thermal decomposition of LMW-MEs was investigated at atmospheric pressure and a temperature range of 773 to 973 K. Six standards of LMW-MEs were used for thermal decomposition in a continuous flow reactor. The kinetic data, such as reaction orders, activation energies, and rate constants, were then calculated. The reaction orders and activation energies of the thermal decomposition reactions of C 4 , C 5 , C 6 , C 7 , C 8, and C 9 were 1.13, 0.96, 1.17, 0.80, 0.99, 0.84, and 312.04, 117.37, 87.29, 62.94, 74.80, 75.79 kJ mol 21 , respectively. The decomposition of LMW-MEs with higher carbon numbers was faster than those with smaller carbon numbers, except for C 8 . The C 4 methyl ester was stable and abundant in the product of the decomposition as well as in the exhausted gas from the engine combustion using BDF. This kinetic data will be applied to modeling study on BDF decomposition and engine technologies to mitigate toxic emissions from BDF combustion.

show abstract

“…Determination of the nutritional quality of CM is required to assess the potential of crambe for both biofuel and ruminant animal feeding. This technique is based on the variation of mass over time or temperature in thermogravimetric analysis (TG) and measurement of heat flow within samples at a set temperature in differential scanning calorimetry analysis (DSC) (Santos et al 2011). Reliable estimates of feed quality may be obtained by simple, low-cost laboratory techniques such as in vitro, in situ and chemical methods (Tilley & Terry 1963;Orskov & McDonald 1979).…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition, chemical composition, in vitro digestibility and gas production and in situ degradability of oilseed residues from the biofuel industry

Souza

Ítavo

Favaro

et al. 2017

Animal Science Journal

View full text Add to dashboard Cite

Thermal analysis could rapidly and easily predict nutritional value of ruminant feeds. The hypothesis is that crambe meal (CM) has a quality similar to that of soybean meal (SM), and the objective of this study was to determine the nutritional characteristics of CM and compare them to those of SM. CM had greater concentrations of phytic acid (26.3 vs. 16.0 g/kg) and phenol compounds (615 vs. 393 mg gallic acid (GAE)/kg) than SM. In vitro dry matter (DM) digestibility was lower for CM than SM (752 vs. 975 g/kg DM). Cumulative in vitro gas production at 48 h of incubation (14.1 vs. 19.4 mL/100 mg substrate DM), and energy release (4.5 vs. 5.7 kJ/g substrate DM) were lower for CM than SM. CM had a higher concentration of low digestible fiber, hence degradability of DM was lower and the proportion of indigestible fraction was greater for CM than SM. High concentrations of indigestible compounds were likely responsible for lower gas production of CM compared to SM. These results suggest CM quality is lower than that of SM and that thermal analysis is a useful tool to precisely determine the nutritive value of oilseed residues.

show abstract

Characterization and kinetic study of sunflower oil and biodiesel

Cited by 38 publications

References 14 publications

Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil

Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil

Detailed chemical kinetics for thermal decomposition of low molecular weight‐methyl esters generated by using biodiesel fuel

Thermal decomposition, chemical composition, in vitro digestibility and gas production and in situ degradability of oilseed residues from the biofuel industry

Contact Info

Product

Resources

About