Experimental investigation of the effect of fatty acids configuration, chain length, branching and degree of unsaturation on biodiesel fuel properties obtained from lauric oils, high-oleic and high-linoleic vegetable oil biomass

Folayan, Adewale Johnson; Anawe, Paul Apeye Lucky; Aladejare, Adeyemi Emman; Ayeni, Augustine O.

doi:10.1016/j.egyr.2019.06.013

Cited by 187 publications

(111 citation statements)

References 31 publications

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“…Flash point (FP) is an important property that has a direct positive relationship with fluid’s viscosity and it is the tendency to form a flammable mixture in the air 50 . The FP is the minimum temperature when there is enough concentration of evaporated fuel in the air for the flame to propagate after ignition has been initiated 51 .…”

Section: Resultsmentioning

confidence: 99%

“…The FP is the minimum temperature when there is enough concentration of evaporated fuel in the air for the flame to propagate after ignition has been initiated 51 . As shown in Table 4 , the biodiesel samples fall within the standard flash point of ≥ 130 o C. According to Adewale Folayan et al 50 , FP determines the transportation and storage requirement of biofuel and should be higher than the standard to ensure safe operation and reduced vaporization within the maximum operating temperature. The findings here show that the biodiesel samples are safe for transportation, storage, and handling in safe operation.…”

Section: Resultsmentioning

confidence: 99%

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Nano-synthesis of solid acid catalysts from waste-iron-filling for biodiesel production using high free fatty acid waste cooking oil

Ajala

Ayinla

et al. 2020

Sci Rep

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Waste-iron-filling (WIF) served as a precursor to synthesize α- through the co-precipitation process. The α- was converted to solid acid catalysts of RBC500, RBC700, and RBC900 by calcination with temperatures of 500, 700 and 900 °C respectively and afterwards sulfonated. Among the various techniques employed to characterize the catalysts is Fourier transforms infrared spectrometer (FT-IR), X-ray diffraction (XRD and Scanning electron microscopy (SEM). Performance of the catalysts was also investigated for biodiesel production using waste cooking oil (WCO) of 6.1% free fatty acid. The XRD reveals that each of the catalysts composed of Al– . While the FT-IR confirmed acid loading by the presence of groups. The RBC500, RBC700, and RBC900 possessed suitable morphology with an average particle size of 259.6, 169.5 and 95.62 nm respectively. The RBC500, RBC700, and RBC900 achieved biodiesel yield of 87, 90 and 92% respectively, at the process conditions of 3 h reaction time, 12:1 MeOH: WCO molar ratio, 6 wt% catalyst loading and 80 °C temperature. The catalysts showed the effectiveness and relative stability for WCO trans-esterification over 3 cycles. The novelty, therefore, is the synthesis of nano-solid acid catalyst from WIF, which is cheaper and could serve as an alternative source for the ferric compound.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Nano-synthesis of solid acid catalysts from waste-iron-filling for biodiesel production using high free fatty acid waste cooking oil

Ajala

Ayinla

et al. 2020

Sci Rep

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“…In the present work, viscosity values are within an intermediate range of 4.2 to 5 mm 2 /s. Biodiesel kinematic viscosity decreases as the unsaturation increases [101,102]. Consequently, the fatty acid composition and corresponding unsaturation of each biodiesel would explain the difference in the kinematic viscosity results of the studied biodiesel.…”

Section: Properties Of Biodieselmentioning

confidence: 94%

Flash point, kinematic viscosity and refractive index: variations and correlations of biodiesel–diesel blends

Alviso

Saab

Clevenot

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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This paper presents characterization studies of flash point, kinematic viscosity and refractive index for several biodiesel/ diesel blends. Biodiesel is produced from soybean, corn, olive, canola, almond, grape and peanut oils. Regression equations are presented to estimate the kinematic viscosity, refractive index and flash point of the studied biodiesel and their blends with diesel fossil fuel as a function of the blend composition. Moreover, as viscosity and refractive index measurements are simple, fast and require very small volume of samples, a correlation study for the blends is conducted to estimate the flash point from these two properties. It is shown that when kinematic viscosity and refractive index are both used for the estimation of the blends flash point, the R 2 values are higher than those found using simple correlations.

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“…The average tar removal efficiency in the whole trial is defined as The average unsaturation degree of the fatty acid could be expressed by the iodine number (IN). 43 It indicates the mass of iodine needed to completely saturate the certain amount of give oils by means of a stoichiometric reaction. The calculation method is presented in eq 21 .…”

Section: Experimental Setupmentioning

confidence: 99%

Experimental and Comprehensive Evaluation of Vegetable Oils for Biomass Tar Absorption

Wang

Tao

et al. 2020

ACS Omega

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Biomass tar is the bottleneck of biomass gasification, which not only is adverse to energy production but also brings severe environmental issues. A scrubber with vegetable oil is considered as a low-cost but efficient approach for tar removal, but the effects of oil’s properties on different tar absorptions were rarely reported. In this study, canola oil, palm oil, and pure oleic acid and linoleic acid, which are the main compounds of vegetable oils, were employed for absorptive removal of benzene, toluene, and phenol. The degree of unsaturation, average molecular weight, and average chain length of solvents were quantitatively characterized. A series of time and temperature-dependent absorption experiments were conducted, and the relationship between oils’ properties and absorption performances was built. Results showed that pure oleic acid had the biggest absorption capacity for benzene and toluene due to the mono-unsaturated structure. Increasing the average molecular weight and chain length also enhanced tar absorption. Moreover, Grey relative analysis was employed to investigate the influence of each factor on tar absorption. The average molecular weight exerted the most significant influence on tar absorption in the tested temperature range whose comprehensive relevance coefficients reached the highest at 0.9810, 0.7669, and 0.7739 for benzene, toluene, and phenol, respectively. This study puts more attention on the nature of vegetable oils, and we hope to provide useful information for modulating a better oil-based scrubber medium and further enhancing tar absorptive removal.

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Experimental investigation of the effect of fatty acids configuration, chain length, branching and degree of unsaturation on biodiesel fuel properties obtained from lauric oils, high-oleic and high-linoleic vegetable oil biomass

Cited by 187 publications

References 31 publications

Nano-synthesis of solid acid catalysts from waste-iron-filling for biodiesel production using high free fatty acid waste cooking oil

Nano-synthesis of solid acid catalysts from waste-iron-filling for biodiesel production using high free fatty acid waste cooking oil

Flash point, kinematic viscosity and refractive index: variations and correlations of biodiesel–diesel blends

Experimental and Comprehensive Evaluation of Vegetable Oils for Biomass Tar Absorption

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